| Paper | Title | Other Keywords | Page |
|---|---|---|---|
| S01SRA01 | A Users View of the SPS and LEP Control Systems | software, operation, network, MMI | 1 |
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| Every accelerator has a control system; at present the SPS has two, both of which are needed to run the machine. Consequently a user of the SPS I LEP complex has to be concurrently familiar with three control systems. While this situation brings problems it allows, even forces, comparison between the different systems, which in tum enriches the user viewpoint. This paper assesses the SPS and LEP control systems from the point of view of the user, who may be an equipment specialist, operator, accelerator physicist or combinations thereof. | |||
| DOI • | reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S01SRA01 | ||
| About • | Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992 | ||
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| S01SRA02 | Experience Controlling the LAMPF-PSR Accelerator Complex | interface, database, hardware, data-acquisition | 7 |
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Funding: Work supported by the U.S. Department of Energy. In recent years, control system efforts at LAMPF have emphasized the provision of uniform control for the LAMPF linear accelerator and associated beam lines and the Proton Storage Ring and its associated beam lines. The situation is complicated by the presence of several control philosophies in the operator interfaces, data base mechanisms, and front end data acquisition and control interfaces. This paper describes the current system configuration, including the distributed operator interfaces, the data and control sharing between systems, and the use of common accelerator diagnostic software tools. Successes as well as deficiencies of the present system will be discussed with an eye toward future developments. |
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| DOI • | reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S01SRA02 | ||
| About • | Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992 | ||
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| S01SRA03 | Status Report on the Advanced Light Source Control System | interface, database, storage-ring, booster | 11 |
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| This paper is a status report on the ADVANCED LIGHT SOURCE (ALS) control system. The current status, performance data, and future plans will be discussed. | |||
| DOI • | reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S01SRA03 | ||
| About • | Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992 | ||
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| S01SRA04 | Lessons from the SLC for Future LC Control Systems | feedback, collider, emittance, machine-protect | 14 |
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Funding: Work supported by the U.S. Department of Energy contratc DE-AC03-76SF00515. The SLC control system is the dynamic result of a number of forces. The most obvious force is the functional requirements of the SLC itself, but other forces are history, budget, people, available technology, etc. The plan of this paper is to describe the critical functional requirements of the SLC which caused significant development of the control system. I have tried to focus on functional requirements as a driver, and I will describe some solutions which we have implemented to satisfy those requirements. The important functional requirements drivers for the control system discussed in this paper are: Repetition rate, Sensitivity to orbit distortion, Stability/Automation, and Accelerator Development |
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| DOI • | reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S01SRA04 | ||
| About • | Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992 | ||
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| S01SRA05 | Process Control for the Vivitron: the Generator Test Set-up | interface, real-time, high-voltage, data-acquisition | 19 |
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| The VIVITRON is a 35 MV Van de Graaff tandem electrostatic accelerator under construction at the CRN since 1985. About half of the parameters are controlled by equipments which are highly stressed by their physical environment: sparks, electrostatic field, X-rays, vacuum, and gas pressure. It needs a dedicated process control system. The described control system is used since early 1991 to perform the voltage tests of the generator. It provides important information for the accelerator tuning and for the full size control under development. | |||
| DOI • | reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S01SRA05 | ||
| About • | Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992 | ||
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| S01SRA06 | Recent Developments of the ALPI Control System | power-supply, operation, storage-ring, electron | 23 |
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| This paper presents recent developments of the control system for ALPI, the new superconducting linear accelerator that will begin to operate at L.N.L. next year. Both hardware and software architectures are described and some base choices are discussed. Results of tests performed in the last two years are also reported. | |||
| DOI • | reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S01SRA06 | ||
| About • | Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992 | ||
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| S01SRA07 | The GSI Control System | interface, operation, software, status | 27 |
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| The GSI accelerator facility consists of an old linac and two modern machines, a synchrotron and a storage ring. It is operated from one control room. Only three operators at a time have to keep it running with only little assistance from machine specialists in daytime. So the control tools must provide a high degree of abstraction and modeling to relieve the operators from details on the device level. The program structures to achieve this are described in this paper. A coarse overview of the control architecture is given. | |||
| DOI • | reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S01SRA07 | ||
| About • | Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992 | ||
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| S01SRA08 | VME Applications to the Daresbury SRS Control System | interface, database, electron, photon | 31 |
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| The control system for the Daresbury SRS has recently been extended with a VME based alarm system which is operational. A further development is a steering system to provide servo control of the electron beam orbit position in the storage ring. | |||
| DOI • | reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S01SRA08 | ||
| About • | Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992 | ||
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| S01SRA09 | Accelerator Control Systems in China | software, operation, interface, status | 35 |
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| Three accelerator facilities were built in the past few years, the 2.8 GeV electron positron collider BEPC, the heavy ion SSC cyclotron accelerator HIRFL and the 800 MeV synchrotron radiation storage ring HESYRL. Aimed at different research areas, they represent a new generation of accelerator in China. This report describes the design philosophy, the structure, performance as well as future improvements of the control systems of the these facilities. | |||
| DOI • | reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S01SRA09 | ||
| About • | Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992 | ||
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| S01SRA10 | HESYRL Control System Status | linac, timing, injection, operation | 40 |
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| HESYRL synchrotron radiation storage ring was completed in 1989 and has been in commissioning since then. Now it has met its design specification and is ready for synchrotron light experiments. Control system of the project was completed in 1989 and some modifications were made during commissioning. This paper describes its present configuration, status and upgrading plan. | |||
| DOI • | reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S01SRA10 | ||
| About • | Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992 | ||
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| S01SRA11 | The Control System of HIRFL | status, heavy-ion, experiment, interface | 44 |
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| The Heavy Ion Research Facility in Lanzhou (HIRFL) is a multi-purpose and variable energy machine designed to accelerate wide range of ions. In order to obtain a designed beam (particle and energy) and to transport it to a proper experimental areas in a short time requires to modify a great number of parameters, this cannot be easily achieved without the help of a computer. The control system design and construction was started in 1983. First of all, some local control station of accelerator subsystems were finished in 1988 and satisfied the needs of operating and commissioning at the elementary level. Controlling the HIRFL process is implementing at a high level. | |||
| DOI • | reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S01SRA11 | ||
| About • | Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992 | ||
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| S01SRA12 | Control System for a Heavy-Ion Accelerator Complex K4 - K10 | real-time, software, interface, hardware | 47 |
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| Control systems for newly created accelerators, perhaps for the first time, may be designed almost only around international standards for communication and control techniques. This is also true for the project of a control system for the accelerator complex K4-K10 at the Joint Institute for Nuclear Research Dubna. Nevertheless, open systems architecture with construction principles being essential for modem systems of such big devices as particle accelerators leaves designers enough possibilities for solving even very sophisticated problems. | |||
| DOI • | reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S01SRA12 | ||
| About • | Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992 | ||
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| S02SRU01 | Future Directions in Controlling the LAMPF-PSR Accelerator Complex at Los Alamos National Laboratory | software, interface, hardware, network | 50 |
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Funding: Work supported by the US Department of Energy. Four interrelated projects are underway whose purpose is to migrate the LAMPF-PSR Accelerator Complex control systems to a system with a common set of hardware and software components. Project goals address problems in performance, maintenance and growth potential. Front-end hardware, operator interface hardware and software, computer systems, network systems and data system software are being simultaneously upgraded as part of these efforts. The efforts are being coordinated to provide for a smooth and timely migration to a client-server model-based data acquisition and control system. An increased use of distributed intelligence at both the front-end and the operator interface is a key element of the projects. |
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| DOI • | reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S02SRU01 | ||
| About • | Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992 | ||
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| S02SRU02 | Common Control System for the CERN Accelerators | software, interface, network, operation | 54 |
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| The PS and SPS Accelerator Control Systems are becoming obsolete and need urgent rejuvenation. After a control users forum, where users expressed their needs, two main Working Groups were set up, consisting of Control and Equipment Specialists and experienced Machine Operators. One Working Group studied the architecture and the front-end processing and the other a common approach to the application software needed to run the CERN accelerator complex. The paper presents the technical conclusions of their work and the policy to implement it, taking into account the necessity to operate both machines without interruption of the Physics Program. | |||
| DOI • | reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S02SRU02 | ||
| About • | Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992 | ||
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| S02SRU03 | New Control Architecture for the SPS Accelerator at CERN | network, real-time, interface, software | 59 |
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| The Control System for the 450 GeV proton accelerator SPS at CERN was conceived and implemented some 18 years ago. The 16 Bit minicomputers with their proprietary operating system and interconnection with a dedicated network do not permit the use of modern workstations, international communication standards and industrial software packages. The upgrading of the system has therefore become necessary. After a short review of the history and the current state of the SPS control system, the paper describes how CERN’s new control architecture, which will be common to all accelerators, will be realized at the SPS. The migration path ensuring a smooth transition to the final system is outlined. Once the SPS upgrade is complete and following some enhancements to the LEP control system, the operator in the SPS/LEP control center will be working in a single uniform control environment. | |||
| DOI • | reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S02SRU03 | ||
| About • | Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992 | ||
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| S02SRU04 | The Next Generation Control System of GANIL | software, operation, real-time, database | 65 |
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| The existing computer control system of GANIL is being renewed to fulfil the increasing requirements of the accelerator operation. This medium term major improvement is aiming at providing the physicists with a wider range of ion beams of higher quality under more flexible and reliable conditions. This paper gives a short description of the new control system envisioned. It consists of a three layer distributed architecture federating a VAX6000-410NMS host computer, a real time control system made up of a dual host VAX3800 and workstation based operator consoles, and at the frontend segment: VME and CAMAC processors running under the VAXELN operating system, and programmable logic controllers for local controls. The basic issues with regard to architecture, human interface, information management, etc. are discussed. Lastly, first implementations and operation results are presented. | |||
| DOI • | reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S02SRU04 | ||
| About • | Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992 | ||
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| S02SRU05 | Replacement of the ISIS Control System | software, hardware, Ethernet, interface | 71 |
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| In operation since 1985, ISIS is the world’s most powerful pulsed spallation neutron source. The decision has been taken to replace the existing ISIS control system, which has been in use for over ten years. The problems of such a project, given the legacy of processor specific hardware and software are discussed, along with the problems associated with incorporating existing interface hardware into any new system. Present progress using commercial workstation based control software is presented with, an assessment of the benefits and pitfalls of such an approach. | |||
| DOI • | reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S02SRU05 | ||
| About • | Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992 | ||
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| S02SRU06 | Upgrading the Control System for the Accelerators at The Svedberg Laboratory | cyclotron, interface, hardware, software | 78 |
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| Two accelerators at The Svedberg Laboratory in Uppsala, the Gustaf Werner cyclotron and the CELSIUS ring, will get a new control system. At present both the cyclotron and the ring have their own control systems based on S99 and PDP11 minicomputers respectively. There are also a number of subsystems which are controlled separately from the standalone PC based consoles (ECR ion source, electron cooler, vacuum system). The goal of the rejuvenation is to integrate all existing control systems and provide the new system with an uniform operators interface based on workstations. The obsolete S99 microcomputers will be substituted with a VME system and all subsystems will be connected to the Ethernet. The upgrade strategy enabling the transformation of the system without any long shut-down period is discussed. Hardware and software planned for the upgrade is presented together with a discussion of expected problems. | |||
| DOI • | reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S02SRU06 | ||
| About • | Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992 | ||
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| S02SRU07 | Upgrading the BEPC Control System | software, power-supply, operation, distributed | 82 |
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| The BEPC control system has been put into operation and operated normally since the end of 1987. Three years’s experience shows this system can satisfy basically the operation requirements, also exhibits some disadvantages a raised from the original centralized system architecture based on the VAX-VCC-CAMAC, such as slow response, bottle neck of VCC, less CPU power for control etc. This paper describes the method and procedure for upgrading the BEPC control system which will be based on DECnet and DEC-WS, and thus intend to upgrade the control system architecture from the centralized to the distributed and improve the integral system performance. | |||
| DOI • | reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S02SRU07 | ||
| About • | Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992 | ||
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| S02SRU08 | The Rejuvenation of TRISTAN Control System | hardware, real-time, operation, software | 85 |
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| The current TRISTAN accelerator control system uses CAMAC as a front end electronics, and they are controlled by twenty five Hitachi minicomputer HIDIC 80’s which are linked with an N-to-N token ring network. After five years from now, these computers must be replaced. This is because of the life time of control system and we have to cope with the requirements imposed by our future project such as the KEK B-Factory and the main ring photon factory projects. The rejuvenation of this control has to be done under some constraints such as the lack of manpower, limited time and financing. First we review the problems of current control system, then the philosophy of the new generation control system is presented. Finally it is discussed how to move to the new generation control system from the current TRISTAN control system. | |||
| DOI • | reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S02SRU08 | ||
| About • | Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992 | ||
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| S02SRU09 | Upgrade Plan for the Control System of the KEK e⁻/e⁺ Linac | network, software, linac, operation | 89 |
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| The KEK 2.5-GeV linac has been operating since 1982. However, in order to maintain reliable operation, the control system should be upgraded within a few years. We plan to replace the minicomputers and the main network connecting them. Thus, the architecture of the control software will also be revised. In the new system we should adopt software and hardware standards. In the next control system we will employ the TCP/IP (DARPA) protocol suite for the main network and Unix workstations to replace the minicomputers. For connections to the local controllers, VME bus (IEEE 1014) will be utilized. | |||
| DOI • | reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S02SRU09 | ||
| About • | Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992 | ||
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| S02SRU10 | The New Control System for TARN-2 | network, interface, Ethernet, synchrotron | 93 |
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| The new control system for the cooler-synchrotron, TARN-2, is described. The new control system consists of OPU’s (work stations) and EXU (control computer) linked with the local area network. The text message is used to transfer the control commands and their results. The control program CSA90 at EXU decodes the text message and executes it with the aid of the interface and periodic control subroutines. Both subroutines use common sharable image composed of the status, values, parameters and so on. The CAMAC, GPIB and RS232C are standard interface at EXU. | |||
| DOI • | reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S02SRU10 | ||
| About • | Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992 | ||
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| S02SRU11 | A New Architecture for Fermilab’s Cryogenic Control System | cryogenics, interface, network, software | 96 |
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In order to achieve design energy in the Tevatron, the magnet system will be operated at lower temperatures. The increased requirements of operating the Tevatron at lower temperatures necessitated a major upgrade to the both the hardware and software components of the cryogenic control system. The new architecture is based on a distributed topology which couples Fermilab designed I/O subsystems to high performance, 80386 execution processors via a variety of networks including: Arcnet, iPSB, and token ring.
Operated by the Universities Research Association Inc., under contract with the U.S. Dept. of Energy. |
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| DOI • | reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S02SRU11 | ||
| About • | Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992 | ||
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| S03SRD01 | Controls for the CERN Large Hadron Collider (LHC) | software, injection, database, power-supply | 100 |
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| CERN’s planned large superconducting collider project presents several new challenges to the Control System. These are discussed along with current thinking as to how they can be met. The high field superconducting magnets are subject to "persistent currents" which will require real time measurements and control using a mathematical model on a 2-10 second time interval. This may be realised using direct links, multiplexed using TDM, between the field equipment and central servers. Quench control and avoidance will make new demands on speed of response, reliability and surveillance. The integration of large quantities of industrially controlled equipment will be important. Much of the controls will be in common with LEP so a seamless integration of LHC and LEP controls will be sought. A very large amount of new high-tech equipment will have to be tested, assembled and installed in the LEP tunnel in a short time. The manpower and cost constraints will be much tighter than previously. New approaches will have to be found to solve many of these problems, with the additional constraint of integrating them into an existing framework. | |||
| DOI • | reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S03SRD01 | ||
| About • | Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992 | ||
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| S03SRD02 | A Performance Requirements Analysis of the SSC Control System | network, interface, collider, operation | 105 |
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Funding: Operated by the Universities Research Association, Inc., for the U.S. Department of Energy under Contract No. DE-AC02-89ER40486. This paper presents the results of analysis of the performance requirements of the Superconducting Super Collider Control System. We quantify the performance requirements of the system in terms of response time, throughput and reliability. We then examine the effect of distance and traffic patterns on control system performance and examine how these factors influence the implementation of the control network architecture and compare the proposed system against those criteria. Operated by the Universities Research Association, Inc., for the U.S. Department of Energy under Contract No. DE-AC02-89ER40486 |
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| DOI • | reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S03SRD02 | ||
| About • | Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992 | ||
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| S03SRD03 | The Computer Control System for the CESR B Factory | interface, operation, database, hardware | 110 |
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Funding: Work supported by the US National Science Foundation B factories present unique requirements for controls and instrumentation systems. High reliability is critical to achieving the integrated luminosity goals. The CESR-B upgrade at Cornell University will have a control system based on the architecture of the successful CESR control system, which uses a centralized database/message routing system in a multiported memory, and VAXstations for all high-level control functions. The implementation of this architecture will address the deficiencies in the current implementation while providing the required performance and reliability. |
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| DOI • | reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S03SRD03 | ||
| About • | Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992 | ||
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| S03SRD04 | Standards and the Design of the Advanced Photon Source Control System | software, network, interface, linac | 116 |
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Funding: Work supported by U.S. Department of Energy, Office of Basic Energy Sciences under Contract No. W-31-109-ENG-38. The Advanced Photon Source (APS), now under construction at Argonne National Laboratory (ANL), is a 7 GeV positron storage ring dedicated to research facilities using synchrotron radiation. This ring, along with its injection accelerators is to be controlled and monitored with a single, flexible, and expandable control system. In the conceptual stage the control system design group faced the challenges that face all control system designers: (1) to force the machine designers to quantify and codify the system requirements, (2) to protect the investment in hardware and software from rapid obsolescence, and (3) to find methods of quickly incorporating new generations of equipment and replace obsolete equipment without disrupting the existing system. To solve these and related problems, the APS control system group made an early resolution to use standards in the design of the system. This paper will cover the present status of the APS control system as well as discuss the design decisions which led us to use industrial standards and collaborations with other laboratories whenever possible to develop a control system. |
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| DOI • | reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S03SRD04 | ||
| About • | Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992 | ||
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| S03SRD05 | The ESRF Control System; Status and Highlights | database, network, interface, device-server | 121 |
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| The European Synchrotron Radiation Facility (ESRF) will operate a 6 GeV e⁻/e⁺ storage ring of 850 m circumference to deliver to date unprecedented high brilliance X-rays to the European research community. The ESRF is the first member of a new generation of Synchrotron Radiation Sources, in which the brilliance of the beam and the utilization of insertion devices are pushed to their present limits. Commissioning of the facility’s storage ring will start in spring 1992. A full energy injector, consisting of a 200 MeV linear preinjector and a 6GeV fast cycling synchrotron (l0 Hz) of 350 m circumference have been successfully commissioned during the last months. The machine control system for this facility, which is under construction since 1988, is still under development, but its initial on-site operation this year has clearly made easier the commissioning of the preinjector plant. A description of the current system is given and application software for start-up is briefly described. | |||
| DOI • | reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S03SRD05 | ||
| About • | Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992 | ||
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| S03SRD06 | Centralized Multiprocessor Control System for the Frascati Storage Rings DA{Φ}NE | interface, software, LabView, hardware | 128 |
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| We describe the status of the DANTE (DA¿NE New Tools Environment) control system for the new DA{Φ}NE {Φ}-factory under construction at the Frascati National Laboratories. The system is based on a centralized communication architecture for simplicity and reliability. A central processor unit coordinates all communications between the consoles and the lower level distributed processing power, and continuously updates a central memory that contains the whole machine status. We have developed a system of VME Fiber Optic interfaces allowing very fast point to point communication between distant processors. Macintosh II personal computers are used as consoles. The lower levels are all built using the VME standard. | |||
| DOI • | reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S03SRD06 | ||
| About • | Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992 | ||
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| S03SRD07 | The Operator View of the Superconducting at LNS Catania | software, hardware, cyclotron, network | 131 |
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| The upper level of a distributed control system designed for the superconducting Cyclotron (SC), will be discussed. In particular, we will present a detailed description of the operator view of this accelerator along with the tools for I/O points management, data rappresentations, data archiving and retrieval. A dedicated program, developed by us, working under X-Window will be described as a starting point for a new man-machine interface approach in small laboratories opposed to the first industrial available packages. | |||
| DOI • | reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S03SRD07 | ||
| About • | Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992 | ||
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| S03SRD08 | The UNK Control System | software, cryogenics, network, interface | 134 |
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| The IHEP proton Accelerating and Storage Complex (UNK) includes in its first stage a 400 GeV conventional and a 3000 GeV superconducting ring placed in the same underground tunnel of 20.7 km circumference. The beam will be injected into UNK from the existing 70 GeV accelerator U-70. The experimental programme which is planned to start in 1995, will include 3000 GeV fixed target and 400-3000 GeV colliding beams physics. The size and complexity of the UNK dictate a distributed multiprocessor architecture of the control system. About 4000 of 8/16 bit controllers, directly attached to the UNK equipment will perform low level control and data acquisition tasks. The equipment controllers will be connected via the MIL-1553 field bus to VME based 32-bit front end computers. The TCP/IP network will interconnect front end computers in the UNK equipment buildings with UNIX workstations and servers in the Main Control Room. The report presents the general architecture and current status of the UNK control. | |||
| DOI • | reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S03SRD08 | ||
| About • | Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992 | ||
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| S03SRD09 | Moscow University Race-Track Microtron Control System: Ideas and Development | network, interface, software, microtron | 140 |
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| Moscow University race-track microtron (RTM) control system is a star-shape network of LSI-11 compatible microcomputers. Each of them is connected with RTM systems via CAMAC; optical fiber coupling is also used. Control system software is designed on Pascal-1, supplemented with real time modules and Macro. A unified real time technique and re-enterable data acquisition drivers allow to simplify development of control drivers and algorithms. Among the latter three main types are used: DDC methods, those, based on optimization technique and algorithms, applying models of microtron’s systems. Man-machine interface is based on concept of the "world of accelerator". It supports means to design, within hardware possibilities, various computer images of the RTM. | |||
| DOI • | reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S03SRD09 | ||
| About • | Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992 | ||
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| S03SRD10 | Present Status of Control System at the SRRC | software, database, synchrotron, interface | 143 |
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| The modern control technique was used to design and set up a control system for the synchrotron radiation facilities at the synchrotron radiation research center (SRRC). This control system will be finally to operate the dedicated machine to provide the 1.3 GeV synchrotron radiation light. The control system will control and monitor the components of storage ring, beam transport and injector system. The concept of the philosophy is to design a unique, simple structure and object-oriented graphic display control system. The SRRC control system has the major features such as two level architecture, high speed local area network with high level protocol, high speed microprocessor based VME crate, object-oriented high performance control console and graphic display. The computer hardware system was set up and tested. The software in top level computers which include database server, network server, upload program, data access program, alarm checking and display, as well as graphics user interface (GUI) program were developed and tested. | |||
| DOI • | reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S03SRD10 | ||
| About • | Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992 | ||
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| S03SRD11 | Status Report on Control System Development for PLS | database, network, interface, software | 147 |
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Funding: Work supported by Pohang Iron & Steel Co., Ltd. (POSCO) and Ministry of Science and Technology (MOST), Government of Republic of Korea. Emphasizing reliability and flexibility, hierarchical architecture with distributed computers have been designed into the Pohang Light Source (PLS) computer control system. The PLS control system has four layers of computer systems connected via multiple data communication networks. This paper presents an overview of the PLS control system. The accelerator control system provides means for accessing all machine components so that the whole system could be monitored and controlled remotely. These tasks include setting magnet currents, collecting status data from the vacuum subsystem, taking orbit data with beam position monitors, feedback control of electron beam orbit, regulating the safety interlock monitors, and so forth. To design a control system which can perform these functions satisfactorily, certain basic design requirements must be fulfilled. Among these are reliability, capability, expa.nsibility, cost control, and ease of operation. |
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| DOI • | reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S03SRD11 | ||
| About • | Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992 | ||
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| S03SRD12 | Design of SPring-8 Control System | network, synchrotron, Ethernet, real-time | 151 |
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| The control system of SPring-8 facility is designed. A distributed computer system is adopted with a three-hierarchy levels. All the computers are linked by computer networks. The network of upper level is a high-speed multi-media LAN such as FDDI which links sub-system control computers, and middle are Ethernet or MAP networks which link front end processors (FEP) such as VME system. The lowest is a field level bus which links VME and controlled devices. Workstations (WS) or X-terminals are useful for man-machine interfaces. For operating system (OS), UNIX is useful for upper level computers, and real-time OS’s for FEP’s. We will select hardwares and OS of which specifications are close to international standards. Since recently the cost of software has become higher than that of hardware, we introduce computer aided tools as many as possible for program developments. | |||
| DOI • | reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S03SRD12 | ||
| About • | Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992 | ||
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| S03SRD13 | Design of a Control System of the Linac for SPring-8 | linac, network, synchrotron, software | 154 |
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| The design of a control system of the linac which is a large scale system including many unstable components like klystrons and modulatora. The linac for SPring-8 requires to be operated automatically for injection to the synchrotron. Under these conditions, we chose a distributed control system architecture of a single layer net-work to simplify the protocol of the net-work between the linac, the booster synchrotron and the storage ring. A VME computer of 68030 is put in every modulator of the linac, and all control signals are gathered to the nearest VME computer. OS-9 and OS-9000 are on trial for investigation of the performances. TCP/IP is tentatively chosen as a protocol of the net-work, but we expect that MAP/MMS makes a high performance, and we are preparing a test of it. | |||
| DOI • | reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S03SRD13 | ||
| About • | Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992 | ||
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| S03SRD14 | Control System for HIMAC Synchrotron | power-supply, synchrotron, Ethernet, timing | 156 |
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| A control system for HIMAC synchrotron has been designed. The system consists of a main computer, console workstations, a few small computers and VME-computers connected via Ethernet. The small computers are dedicated to the control of an injection line, an extraction line and an RF system. Power supplies in main rings are controlled by the VME-computers through FDI/FDO, DI/DO modules. This paper describes an overview of the synchrotron control system. | |||
| DOI • | reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S03SRD14 | ||
| About • | Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992 | ||
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| S04SRS01 | Digital Control of the Superconducting Cavities for the LEP Energy Upgrade | cavity, operation, software, klystron | 159 |
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| The superconducting (SC) cavities for the LEP200 energy upgrade will be installed in units of 16 as for the present copper cavity system. Similar equipment will be used for RF power generation and distribution, for the low level RF system and for digital control. The SC cavities and their associated equipment however require different interface hardware and new control software. To simplify routine operation control of the SC cavity units is made to resemble as closely as possible that of the existing units. Specific controls for the SC cavities at the equipment level, the facilities available and the integration of the SC cavity units into the LEP RF control system are described. | |||
| DOI • | reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S04SRS01 | ||
| About • | Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992 | ||
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| S04SRS02 | A PC Based Control System for the CERN ISOLDE Separators | ISOL, Windows, hardware, network | 162 |
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| The control system of the two isotope separators of CERN, named ISOLDE, is being completely redesigned with the goal of having a flexible, high performance and inexpensive system. A new architecture that makes heavy use of the commercial software and hardware available for the huge Personal Computer (PC) market is being implemented on the 1700 geographically distributed control channels of the separators. 8 MS-DOS™ i386-based PCs with about 80 acquisition/control boards are used to access the equipments while 3 other PCs running Microsoft Windows™ and Microsoft Excel™ are used as consoles, the whole through a Novell™ Local Area Network with a PC Disk Server used as a database. This paper describes the interesting solutions found and discusses the reduced programming workload and costs that are expected to build the system before the start of the separators in March 1992. | |||
| DOI • | reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S04SRS02 | ||
| About • | Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992 | ||
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| S04SRS03 | Status of the Control and Beam Diagnostic Systems of the CRYRING Project | detector, timing, hardware, diagnostics | 167 |
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| CRYRING is a facility for research in atomic, molecular and nuclear physics. It uses a cryogenic electron beam ion source, CRYSIS, together with an RFQ linear accelerator as injector into a synchrotron/storage ring for very highly charged, heavy ions. The first circulating beam was achieved in December 1990. The status of the systems for control and beam diagnostics are described. | |||
| DOI • | reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S04SRS03 | ||
| About • | Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992 | ||
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| S04SRS04 | Magnet Test Facility Control System for Superconducting Magnets of UNK | software, MMI, cryogenics, dipole | 171 |
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| An UNK Magnet Test Facility (MTF) is being constructed to provide cryogenic, electrical and magnet tests of superconducting (SC) magnets of UNK. The main parts of it are: The cryogenic system consisting in its turn of the central liquefier, ten satellite refrigerators, two compressors, purification system and transfer lines. The central liquefier supplies the satellite refrigerators with liquid helium. The liquefier is manufactured according to the scheme incorporating re-cooling by liquid nitrogen, two turbine expanders and a wet expander, - Four 8 kA, 24 V, ramped Power Supplies (PS) for cold testing of SC magnets, two 3 kA PS’s for instrumentation testing and calibration. Test facility in its turn consisting of: a) two dipoles and one quad benches for warm measurements; b) eight dipoles and two quad benches for cold measurements; c) two benches for instrumentation. | |||
| DOI • | reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S04SRS04 | ||
| About • | Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992 | ||
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| S04SRS05 | Beam Extraction Controlsystems of the Fast-Cycling Synchrotron | extraction, synchrotron, operation, target | 174 |
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| A compact system controlling the extraction of different beams (gamma, electron, synchrotron radiation) in single and simultaneous operation modes at high electromagnetic disturbances level based on using one computer of IBM PC/AT type is described. | |||
| DOI • | reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S04SRS05 | ||
| About • | Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992 | ||
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| S04SRS06 | Instrumentation & Control System For PLS-IM-T 60 MeV LINAC | software, linac, klystron, interface | 177 |
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| The PLS/ MT is a 60 MeV LINAC as a preinjector for 2 GeV LINAC of PLS project. The instrumentation and control system have been designed under the institutional collaboration between the IHEP (Beijing, China) and POSTECH (Pohang, Korea). So far, the I&C system are being set up nowadays at the POSTECH of Pohang. This paper describes its major characteristics and present status. | |||
| DOI • | reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S04SRS06 | ||
| About • | Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992 | ||
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| S04SRS07 | Multi-Microprocessor Control of the Main Ring Magnet Power Supply of the 12 GeV KEK Proton Synchrotron | power-supply, injection, operation, software | 180 |
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| A general description of the computer control system of the KEK 12 GeV PS main ring magnet power supply is given, including its peripheral devices. The system consists of the main HIDIC-V90/2S CPU and of the input and output controllers HISEC-04M. The main CPU, supervised by UNIX, provides the man-machine interfacing and implements the repetitive control algorithm to correct for any magnet current deviation from reference. Two sub-CPU’s are linked by a LAN and supported by a real time multi-task monitor. The output process controller distributes the control patterns to 16-bit DAC’s, at 1.67 ms clock period in synchronism with the 3-phase ac line systems. The input controller logs the magnet current and voltage, via 16-bit ADC’s at the same clock rate. | |||
| DOI • | reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S04SRS07 | ||
| About • | Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992 | ||
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| S04SRS09 | Magnet Power Supply and Beam Line Control for a Secondary Beam Line K6 | power-supply, operation, status, monitoring | 188 |
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| K6 is a secondary separated-beam line with momentum range up to 2.0 GeV/c in the north experimental hall at the KEK 12 GeV Proton Synchrotron (KEK-PS). On the construction, newly developed magnet power supplies (MPSs), in each of them a microprocessor is embedded, are introduced. The features of the MPS are as follows: 1) The MPS is connected to an upper-level beam line controller (BLC) by GPIB highway for exchanging simple messages. 2) All the operations of the MPS are supervised by the microprocessor, which has its individual parameters and fault messages. It reduces the load of the upper-level controller. 3) The MPS has functions to inspect itself and to report the results. It saves much time and labor of maintenance. | |||
| DOI • | reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S04SRS09 | ||
| About • | Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992 | ||
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| S04SRS10 | Specific Beam Delivery System of Medical Accelerator HIMAC | radiation, target, operation, neutron | 192 |
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| A specific beam delivery system for radiation therapy in HIMAC is being designed. This report describes an outline of the beam delivery control system and its operation. | |||
| DOI • | reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S04SRS10 | ||
| About • | Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992 | ||
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| S05SRN01 | A Control System for a Free Electron Laser Experiment | experiment, data-acquisition, software, operation | 195 |
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| The general layout of a control and data acquisition system for a Free Electron Laser experiment will be discussed. Some general considerations about the requirements and the architecture of the whole system will be developed. The aim or the ELFA (Electron Laser Facility) experiment is to study the physics of a single pass FEL amplifier operating in the high gain Compton regime using a short electron pulse beam. The experimental purpose is the production of high peak power (0.3-1 GW) of microwave radiation, with a basic wavelength of λr=3 mm, and the possibility of tuning from λr= 1 cm to λr=0.1 mm. In order to achieve this goal an electron beam of very high current (400 A) in short pulses (6 cm) and with a maximum energy around 10 MeV will be injected into the wiggler midplane. | |||
| DOI • | reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S05SRN01 | ||
| About • | Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992 | ||
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| S05SRN02 | Control System for JAERI Free Electron Laser | hardware, FEL, electron, interface | 198 |
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| A control system comprising of the personal computers network and the CAMAC stations for the JAERI Free Electron Laser is designed and is in the development stage. It controls the equipment and analyzes the electron and optical beam experiments. The concept and the prototype of the control system are described. The Free Electron Laser (FEL) facility, SCARLET (Superconducting Accelerator for Research of Light Emission at Tokai), is now under construction at JAERI. It is a first step of the FEL program and the aim is the R&D of the superconducting accelerator (SCA) based FEL system in 10-50 µm range. The SCA is employed due to the suitability for the cw operation in the second phase of the project. | |||
| DOI • | reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S05SRN02 | ||
| About • | Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992 | ||
| Cite • | reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml) | ||
| S05SRN03 | Control Software for the ESO VLT | software, distributed, operation, database | 202 |
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| The Very Large Telescope (VLT) project of ESO consists of an array of four optical telescopes of 8 m diameter, to be installed at a new site in the Atacama desert in Chile starting in 1995. The control software is completely distributed, being based on LANs interconnecting microprocessors and workstations, where several users and operators will be active at the same time. Microprocessors are used in a variety of control functions, including the active control of the shape of the main mirror and compensation for atmospheric turbulence. Dedicated links and antennas are planned for direct communication and remote observation from various European centers. The main concepts and novelties of the software design are explained. | |||
| DOI • | reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S05SRN03 | ||
| About • | Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992 | ||
| Cite • | reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml) | ||
| S05SRN04 | Distributed Control and Data Acquisition for the EUROGAM Gamma Ray Spectrometer | software, detector, interface, data-acquisition | 208 |
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| EUROGAM is an Anglo/French Gamma Ray Detector which will alternate between the Tandem Van der Graaf at Daresbury and the Vivitron at Strasbourg. Because of the need to conform to the standards of Laboratories in two different countries, and the very sensitive nature of electronics for Germanium Gamma Ray telescopes. the newly emerging VXIbus (VMEbus EXtensions for Instrumentation) was chosen as the basis for control and data acquisition. This entailed a major programme of development for both the signal processing front end modules for Germanium and Bismuth Germanate detectors, and also for the hardware and software management of resources from within the VXI environment. The paper will concentrate mainly on the latter areas. | |||
| DOI • | reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S05SRN04 | ||
| About • | Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992 | ||
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| S05SRN05 | A Control System of the Nobeyama Millimeter Array | software, interface, status, Ethernet | 214 |
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| We have developed a control system of the Nobeyama Millimeter Array which is a radio interferometer for astronomical observations at millimeter wavelengths. The system consists of three sub-systems (MANAGER, ENGINE, and STATUS CONTROLLER). Observers conduct their observations with MANAGER sub-system, which run on a UNIX workstation. ENGINE is a rigid system on an IBM compatible mainframe. It controls the accurate tracking of astronomical radio objects, and acquires a large amount of observed data from a receiver backend. STATUS CONTROLLER consists of several personal computers which control and monitor the receiver system. These sub-systems are connected with an ethernet. | |||
| DOI • | reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S05SRN05 | ||
| About • | Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992 | ||
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| S05SRN06 | Present Status of the JT-60 Control System | plasma, operation, timing, interface | 218 |
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| The present status of the control system for a large fusion device of the JT-60 upgrade tokamak is reported including its original design concept, the progress of the system in the past five-year operation and modification for the upgrade. The control system has the features of hierarchical structure, computer control, adoption of CAMAC interfaces and protective interlock by both software and hard-wired systems. Plant monitoring and control are performed by an efficient data communication via CAMAC highways. Sequential discharge control of is executed by a combination of computers and a timing system. A plasma feedback control system with fast 32-bit microprocessors and a man/machine interface with modern workstations have been newly developed for the operation of the JT-60 upgrade. | |||
| DOI • | reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S05SRN06 | ||
| About • | Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992 | ||
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| S05SRN07 | Conceptual Design of Centralized Control System for LHD | plasma, operation, experiment, status | 224 |
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| A centralized control system for a fusion experimental machine is discussed. A configuration whereby a number of complete and uniform local systems are controlled by a central computer, a timer and an interlock system is appropriate for the control system of the Large Helical Device (LHD). A connection among local systems can be made by Ethernet, because a faster transmission of control data is processed by a specific system. | |||
| DOI • | reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S05SRN07 | ||
| About • | Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992 | ||
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| S05SRN08 | Status of LHD Control System Design | plasma, operation, experiment, feedback | 228 |
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| The present status of LHD (Large Helical Device) control system design is described, emphasizing on the plasma operation modes, the architecture of the LHD control system, the real-time plasma feedback system with PID or Fuzzy controllers and the construction schedule of the LHD control system. The conceptual and detailed designs are under way taking flexible and reliable operations for physics experiments into account. | |||
| DOI • | reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S05SRN08 | ||
| About • | Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992 | ||
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| S05SRN09 | Control and Monitoring System Design Study for the UNK Experimental Setups | electron, electronics, experiment, data-acquisition | 232 |
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| At present a number of experimental setups for the new UNK project are under construction. A common approach to the architecture of control/DAO/trigger systems will be used in the development of electronics for all these detectors. The system analysis and design group has been formed for this purpose. The group activity is aimed at the development of such unified system. The group has started with control and monitoring system as one of the most important parts and the environment for the DAO/trigger systems. The group activity status report is presented. | |||
| DOI • | reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S05SRN09 | ||
| About • | Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992 | ||
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| S05SRN10 | Hard-and Software for Measurement and Control of the Pulse Thermonuclear Installation | software, hardware, experiment, Ethernet | 235 |
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| This paper describes control and measuring systems of the pulse thermonuclear installation "Angara-5". The "Angara-5" operates in a monopulse mode. It takes a long time to prepare the installation to the work shot. The main information flow about the installation output parameters and the target processes comes for 10-7-10-8 sec. The measuring-control equipment has a multi-level hierarchy structure where the lower level is local systems controlled by own computers. Measuring systems contain waveform digitizers of different types. The supervisor console system realizes the communications with the local systems, as well as the data acquisition, processing and storage. Hardware and software structures are given. Careful equipment shielding and grounding have provided level of noise 30 mV. Fast signals processing features are discussed. | |||
| DOI • | reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S05SRN10 | ||
| About • | Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992 | ||
| Cite • | reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml) | ||
| S05SRN11 | A Control & Data Acquisition System for Photoelectron Spectroscopy Experiment Station at Hefei National Synchrotron Radiation Laboratory | interface, experiment, software, electron | 239 |
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| The paper describes system configuration and software design. The system has the following features: flexible user interface, succinct control levels, strict protection and high intelligence. It can run EDC, CFS, CIS experiment modes very conveniently with SR light source, Its construction and design idea of the system can be applied to other data acquisition systems. | |||
| DOI • | reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S05SRN11 | ||
| About • | Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992 | ||
| Cite • | reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml) | ||
| S06SA01 | Overview of the Next Generation of Fermilab Collider Software | Windows, interface, collider, data-acquisition | 243 |
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Fermilab is entering an era of operating a more complex collider facility. In addition, new operator workstations are available that have increased capabilities. The task of providing updated software in this new environment precipitated a project called Colliding Beam Software (CBS). It was soon evident that a new approach was needed for developing console software. Hence CBS, although a common acronym, is too narrow a description. A new generation of the application program subroutine library has been created to enhance the existing programming environment with a set of value added tools. Several key Collider applications were written that exploit CBS tools. This paper will discuss the new tools and the underlying change in methodology in application program development for accelerator control at Fermilab.
Operated by Universities Research Association for the Department of Energy. |
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| DOI • | reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S06SA01 | ||
| About • | Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992 | ||
| Cite • | reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml) | ||
| S06SA02 | Ideas on a Generic Control Systems Based on the Experience on the 4 LEP Experiments Control System | database, software, experiment, detector | 246 |
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| Most of the large slow control systems in the LEP collider experiments are distributed heterogeneous and multi-standard. But in spite of the appearances, they have a lot in common. From our direct experience on the L-3 slow control system and from the informations we obtained on the 3 other LEP experiments control systems we have come to the conclusion that it should be possible to build a Generic Control Package from which any control system could be derived. This software package is entirely based on relational databases and is intended to provide all the necessary tools to build a modular, coherent, easy to update and to maintain control system. Among other things this package should include user friendly interfaces, expert systems, and powerful graphic monitoring and control tools. This paper will present our general ideas about the realization of such a package. | |||
| DOI • | reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S06SA02 | ||
| About • | Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992 | ||
| Cite • | reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml) | ||
| S06SA03 | The LEP Alarm System | database, software, interface, operation | 254 |
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| Unlike alarm systems for previous accelerators, the LEP alarm system caters not only for the operation of the accelerator but also for technical services and provides the direct channel for personnel safety. It was commissioned during 1989 and has seen a continued development up to the present day. The system, comprising over 50 computers including 5 different platforms and 4 different operating systems, is described. The hierarchical structure of the software is outlined from the interface to the equipment groups, through the front end computers to the central server, and finally to the operator consoles. Reasons are given for choosing a conventional, as opposed to a ’knowledge based’ approach. Finally, references are made to a prototype real time expert system for surveying the power converters of LEP, which was conducted during 1990 as part of the alarm development program. | |||
| DOI • | reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S06SA03 | ||
| About • | Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992 | ||
| Cite • | reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml) | ||
| S06SA05 | A VMEbus General-Purpose Data Acquisition System | data-acquisition, monitoring, interface, real-time | 265 |
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We present a general-purpose, VMEbus based, multiprocessor data acquisition and monitoring system. Events, handled by a master CPU, are kept at the disposal of data storage and monitoring processes which can run on distinct processors. They access either the complete set of data or a fraction of them, minimizing the acquisition dead-time. The system is built with the VxWorka 5.0 real time kernel to which we have added device drivers for data acquisition and monitoring. The acquisition is controlled and the data are displayed on a workstatlon. The user Interface is written in C++ and re-uses the classes of the Interviews and the NIH libraries. The communication between the control workstation and the VMEbus processors is made through SUN RPCs on an Ethernet link. The system will be used for, CAMAC based, data acquisition for nuclear physics experiments as well as for the VXI data taking with the 4π configuration (100 neutron detectors) of the Brussels-Caen-Louvain-Strasbourg DEMON collaboration.
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| DOI • | reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S06SA05 | ||
| About • | Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992 | ||
| Cite • | reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml) | ||
| S07IC01 | Interfacing Industrial Process Control Systems to LEP/LHC | cryogenics, interface, operation, software | 269 |
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| Modern industrial process control systems have developed to meet the needs of industry to increase the production while decreasing the costs. Although particle accelerators designers have pioneered in control systems during the seventies, it has now become possible to them to profit of industrial solutions in substitution of, or in complement with the more traditional home made ones. Adapting and integrating such industrial systems to the accelerator control area will certainly benefit to the field in terms of finance, human resources and technical facilities offered off-the-shelf by the widely experienced industrial controls community; however this cannot be done without slightly affecting the overall accelerator control architecture. The paper briefly describes the industrial controls arena and takes example on an industrial process control system recently installed at CERN to discuss in detail the related choices and issues. | |||
| DOI • | reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S07IC01 | ||
| About • | Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992 | ||
| Cite • | reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml) | ||
| S07IC02 | SPS/LEP Beam Transfer Equipment Control Using Industrial Automation Components | software, hardware, interface, electron | 274 |
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| Several control systems for SPS and LEP beam transfer equipment have to be commissioned in the near future. Tools for fast software development, easy maintenance and modifications, compliance with industrial standards, and independence of specific suppliers are considered to be essential. A large fraction of the systems can be realized using off-the-shelf industrial automation components like industrial I/O systems, programmable logic controllers, or diskless PCs. Specific electronics built up in G-64 can be integrated. Diskless systems running UNIX and X Windows are foreseen as process controllers and local access media. | |||
| DOI • | reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S07IC02 | ||
| About • | Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992 | ||
| Cite • | reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml) | ||
| S07IC03 | EPICS Architecture | database, EPICS, distributed, network | 278 |
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Funding: Work at LANL supported and funded under the Department of Defense. US Army Strategic Defense Command. under the auspices of the Department of Energy.<br /> Work at ANL supported by U.S. Dept. of Energy, Office of Basic Energy Sciences, under Contract No W-31-109-ENG-38. The Experimental Physics and Industrial Control System (EPICS) provides control and data acquisition for the experimental physics community. Because the capabilities required by the experimental physics community for control were not available through industry, we began the design and implementation of EPICS. It is a distributed process control system built on a software communication bus. The functional subsystems, which provide data acquisition, supervisory control, closed loop control, archiving, and alarm management, greatly reduce the need for programming. Sequential control is provided through a sequential control language, allowing the implementer to express state diagrams easily. Data analysis of the archived data is provided through an interactive tool. The timing system provides distributed synchronization for control and time stamped data for data correlation across nodes in the network. The system is scalable from a single test station with a low channel count to a large distributed network with thousands of channels. The functions provided to the physics applications have proven helpful to the experiments while greatly reducing the time to deliver controls. |
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| DOI • | reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S07IC03 | ||
| About • | Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992 | ||
| Cite • | reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml) | ||
| S07IC04 | A Front-End System for Industrial Type Controls at the SSC | interface, hardware, software, database | 283 |
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The SSC control system is tasked with coordinating the operation of many different accelerator subsystems, a number of which use industrial type process controls. The design of a high-performance control system front end is presented which serves both as a data concentrator and a distributed process controller. In addition it provides strong support for a centra1ized control system architecture, allows for regional control systems, and simplifies the construction of inter-subsystem controls. An implementation of this design will be discussed which uses STD-Bus for accelerator hardware interfacing, a time domain multiplexing (TDM) communications transport system, and a modified reflective memory interface to the rest of the control system.
Operated by the Universities Research Association, Inc., for the U.S. Department of Energy under Contract No. DE-AC02-89ER40486. |
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| DOI • | reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S07IC04 | ||
| About • | Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992 | ||
| Cite • | reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml) | ||
| S07IC05 | The Influence of Industrial Applications on a Control System Toolbox | database, hardware, software, network | 287 |
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| V system is as an open, advanced software application toolbox for rapidly creating fast, efficient and cost-effective control and data-acquisition systems. V system’s modular architecture is designed for single computers, networked computers and workstations running under VAX/VMS or VAX/ELN. At the heart of Vsystem lies Vaccess, a user extendible real-time database and library of access routines. The application database provides the link to the hardware of the application and can be organized as one database or separate databases installed in different computers on the network. Vsystem has found application in charged particle accelerator control, tokamak control, and industrial research. as well as its more recent industrial applications. This paper describes the broad features of Vsystem and the influence that recent industrial applications have had on the software. | |||
| DOI • | reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S07IC05 | ||
| About • | Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992 | ||
| Cite • | reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml) | ||
| S08NC01 | ARCNET as a Field Bus in the Fermilab Linac Control System | network, linac, hardware, software | 291 |
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Funding: Work supported by the U.S. Department of Energy under contract No. DE-AC02-76CHO3000 Data acquisition hardware in accelerator control systems is connected by a field bus to networked computers that supply data to consoles. Industry attempts to standardize on a low level field bus have not succeeded in providing a single well supported bus. This paper describes a data acquisition chassis that connects to VMEbus computers using ARCNET, a full featured token-passing local area network, as the field bus. The performance of this technique as implemented in the control system for the Fermilab Linac is given. |
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| DOI • | reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S08NC01 | ||
| About • | Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992 | ||
| Cite • | reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml) | ||
| S08NC02 | Multi-Processor Network Implementations in Multibus II and VME | network, software, distributed, interface | 295 |
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ACNET (Fermilab Accelerator Controls Network), a proprietary network protocol, is implemented in a multi-processor configuration for both Multibus II and VME. The implementations are contrasted by the bus protocol and software design goals. The Multibus II implementation provides for multiple processors running a duplicate set of tasks on each processor. For a network connected task, messages are distributed by a network round-routed for each task by user-callable commands. The VME implementation provides for multiple processors running one task across all processors. The process can either be fixed to a particular processor or dynamically allocated to an available processor depending on the scheduling algorithm of the multi-processing operating system.
Operated by Universities Research Association for the Department of Energy. |
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| DOI • | reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S08NC02 | ||
| About • | Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992 | ||
| Cite • | reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml) | ||
| S08NC03 | A Distributed Design for Monitoring Logging and Replaying Device Readings at LAMPF | software, network, interface, distributed | 299 |
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Funding: Work supported by the U.S. Department of Energy As control of the Los Alamos Meson Physics linear accelerator and Proton Storage Ring moves to a more distributed system, it has been necessary to redesign the software which monitors, logs, and replays device readings throughout the facility. The new design allows devices to be monitored and their readings logged locally on a network of computers. Control of the monitoring and logging process is available throughout the network from user interfaces which communicate via remote procedure calls with server processes running on each node which monitors and records device readings. Similarly, the logged data can be replayed from anywhere on the network. Two major requirements influencing the final design were the need to reduce the load on the CPU of the control machines, and the need for much faster replay of the logged device readings. |
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| DOI • | reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S08NC03 | ||
| About • | Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992 | ||
| Cite • | reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml) | ||
| S08NC04 | Synchronous Message-Based Communication for Distributed Heterogeneous Systems | network, Ethernet, real-time, distributed | 302 |
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| The use of a synchronous, message-based real-time operating system (Unison) as the basis of transparent interprocess and inter-processor communication over VMEbus is described. The implementation of a synchronous, message-based protocol for network communication between heterogeneous systems is discussed. In particular, the design and implementation of a message-based session layer over a virtual circuit transport layer protocol using UDP /IP is described. Inter-process communication is achieved via a message-based semantic which is portable by virtue of its ease of implementation in other operating system environments. Protocol performance for network communication among heterogeneous architectures is presented, including VMS, Unix, Mach and Unison. | |||
| DOI • | reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S08NC04 | ||
| About • | Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992 | ||
| Cite • | reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml) | ||
| S08NC05 | The Transmission of Accelerator Timing Information around CERN | timing, interface, network, operation | 306 |
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| Prior to the construction of the Large Electron Positron (LEP) collider, machine timing information was transmitted around CERN’s accelerators using a labyrinth of dedicated copper wires. However, at an early stage in the design of the LEP control system, it was decided to use an integrated communication system based on Time Division Multiplex (TDM) techniques. Therefore it was considered appropriate to use this facility to transmit timing information over long distances. This note describes the overall system, with emphasis placed on the connectivity requirements for the CCITTG.703 series of recommendations. In addition the methods used for error detection and correction, and also for redundancy, are described. The cost implications of using such a TDM based system are also analyzed. Finally the performance and reliability obtained by using this approach are discussed. | |||
| DOI • | reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S08NC05 | ||
| About • | Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992 | ||
| Cite • | reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml) | ||
| S08NC06 | Time and Load Measuring in the SPS/LEP Control System | network, software, timing, hardware | 310 |
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| This paper describes the experiences with the SPS/LEP Control System during its first operational days from the communication point of view. The results show difference between hardware possibility of the local communication based on the modem technology and the possibility to use it by PC machines. There is also several figures describing the activity on the communication lines. | |||
| DOI • | reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S08NC06 | ||
| About • | Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992 | ||
| Cite • | reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml) | ||
| S08NC07 | The ELETTRA Field Highway System | software, interface, network, hardware | 313 |
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| ELETTRA is a third generation Synchrotron Light Source under construction in Trieste (Italy); it consists of a full energy linac injector and a storage ring with beam energies between 1.5 and 2 GeV. The ELETTRA control system has a distributed architecture, hierarchically divided into three layers of computers; two network levels provide communication between the adjacent computer layers. The field highway adopted for the connection of the middle-layer local process computers with the bottom-layer equipment interface units is the MIL-1553B multidrop highway. This paper describes the hardware configuration and the main communication services developed on the MIL-15538 field highway for accelerator control. As an additional feature, typical LAN utilities have been added on top of the basic MIL-15538 communication software allowing remote login and file transfer; these tools are currently used for software development in our laboratory. | |||
| DOI • | reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S08NC07 | ||
| About • | Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992 | ||
| Cite • | reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml) | ||
| S08NC08 | Network Communication Libraries for the Next Control System of the KEK e⁻/e⁺ Linac | network, linac, Ethernet, power-supply | 318 |
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| The network communication libraries for the next control system of the KEK Linac have been developed. They are based on TCP/IP sockets, and show high availability among the different operating systems: UNIX, VAX/VMS, and MS-DOS. They also show high source portability of application programs among the different computer systems provided by various vendors. The performance and problems are presented in detail. | |||
| DOI • | reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S08NC08 | ||
| About • | Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992 | ||
| Cite • | reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml) | ||
| S08NC09 | A Program Development Tool for KEK VME-MAP Control System | MMI, network, interface, synchrotron | 322 |
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| The control system for KEK 12 GeV Proton Synchrotron has been replaced with a distributed VME-bus based microcomputer system and a MAP local area network. In order to simplify programming for network application tasks, a set of a preprocessor for a PASCAL compiler and a network communication server has been developed. Application programs for accelerator control system have blocks with similar codes; sending, waiting for, receiving, analyzing messages, etc. The preprocessor called "OBJP" incorporates such common codes into the source code written by an application programmer. In case of a simple program, the size of the source code is reduced by one tenth of a full coding. | |||
| DOI • | reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S08NC09 | ||
| About • | Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992 | ||
| Cite • | reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml) | ||
| S08NC10 | Network Performance for Graphical Control Systems | network, database, real-time, software | 326 |
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| Vsystem is a toolbox for building graphically-based control systems. The real-time database component, Vaccess, includes all the networking support necessary to build multi-computer control systems. Vaccess has two modes of database access, synchronous and asynchronous. Vdraw is another component of Vsystem that allows developers and users to develop control screens and windows by drawing rather than programming. Based on Xwindows, Vsystem provides the possibility of running Vdraw either on the workstation with the graphics or on the computer with the database. We have made some measurements on the cpu loading, elapsed time and the network loading to give some guidance in system configuration performance. It will be seen that asynchronous network access gives large performance increases and that the network database change notification protocol can be either more or less efficient than the X-window network protocol, depending on the graphical representation of the data. | |||
| DOI • | reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S08NC10 | ||
| About • | Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992 | ||
| Cite • | reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml) | ||
| S08NC11 | A New Approach in Development of Data Flow Control and Investigation System for Computer Networks | network, software, experiment, database | 329 |
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| Seven years ago we started the development of a new control system for an experimental electron accelerator in our institute. This paper describes a new approach in development of data flow control and investigation system for computer networks. This approach was developed and applied in the Moscow Radiotechnical Institute for control and investigations of Institute computer network. It allowed us to solve our network current problems successfully. Description of our approach is represented below along with the most interesting results of our work. | |||
| DOI • | reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S08NC11 | ||
| About • | Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992 | ||
| Cite • | reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml) | ||
| S09DPP01 | Concurrent Control System for the JAERI Tandem Accelerator | MMI, tandem-accelerator, target, interface | 333 |
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| Concurrent processing with a multi-processor system is introduced to the particle accelerator control system region. The control system is a good application in both logical and physical aspects. A renewal plan of the control system for the JAERI tandem accelerator is discussed. | |||
| DOI • | reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S09DPP01 | ||
| About • | Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992 | ||
| Cite • | reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml) | ||
| S09DPP02 | Palantiri: A Distributed Real-Time Database System for Process Control | database, hardware, network, real-time | 336 |
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| The medium-energy accelerator MEA, located in Amsterdam, is controlled by a heterogeneous computer network. A large real-time database contains the parameters involved in the control of the accelerator and the experiments. This database system was implemented about ten years ago and has since been extended several times. In response to increased needs the database system has been redesigned. The new database environment, as described in this paper, consists out of two new concepts: (1) A Palantir which is a per machine process that stores the locally declared data and forwards au non local requests for data access to the appropriate machine. It acts as a storage device for data and a looking glass upon the world. (2) Golems: working units that define the data within the Palantir, and that have knowledge of the hardware they control. Applications access the data of a Golem by name (which do resemble Unix path names). The Palantir that runs on the same machine as the application handles the distribution of access requests. This paper focuses on the Palantir concept as a distributed data storage and event handling device for process control. | |||
| DOI • | reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S09DPP02 | ||
| About • | Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992 | ||
| Cite • | reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml) | ||
| S10TS01 | Realtime Aspects of Pulse-to-Pulse Modulation | timing, real-time, ECR, interface | 345 |
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| The pulse-to-pulse modulation of the SIS-ESR control system is described. Fast response to operator interaction and to changes in process conditions is emphasized as well as the essential part played by the timing system in pulse-to-pulse modulation. The benefits of pulse-to-pulse modulation in acceleration operating have been described as early as ’77 for the CERN’s PS complex. It is an effective way to increase the overall output of valuable beamtime of one or more accelerators. With beamsharing, rarely all users of the beam will be unable to accept the beam at the same time. If the PPM-handling quickly responds to changing conditions, there will be virtually no dead-time in the machine operating due to inevitable dead-times of experiments, e.g. during new experimental setups. In a multi-accelerator facility, PPM is almost imperative. Asynchronously running machines, every one of them operating as an injector for the next one, normally have time left between subsequent injections that can be used for experiments. | |||
| DOI • | reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S10TS01 | ||
| About • | Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992 | ||
| Cite • | reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml) | ||
| S10TS03 | Automated Control System Structure of the USSR Academy of Sciences Kaon Facility | injection, feedback, beam-loading, network | 352 |
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| Up to date at Nuclear Research Institute of the USSR AS (Moscow-Troitsk) it is finished building of Moscow Meson Facility high intensity current proton Linear Accelerator (LA) (beam parameters: energy - 600 MeV, average current - 0.5 mA, pulse current - 50 mA). The LA is proposed to serve as Kaon Facility (KF) which is under working out. There are presented brief description of the KF system. | |||
| DOI • | reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S10TS03 | ||
| About • | Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992 | ||
| Cite • | reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml) | ||
| S10TS04 | The Development of RF Reference Lines and a Timing System for Japan Linear Collider | timing, gun, linac, operation | 356 |
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| The main linac of Japan Linear Collider(JLC) will be operated at an X-band frequency of 11.424 GHz. The positioning of the X-band accelerating structures at JLG requires precise phase synchronisation over about 10 km. Temperature compensated fiber optic cables will be used for the transmission of the 11.424 GHz RF signal. The performance of this transmission line is described. Many timing signals will be also transmitted from the main control room, in which the master RF frequency generator will be situated, via this l.3 ¿m single mode fiber optic link. The outline of the timing system for JLC is given in this paper. | |||
| DOI • | reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S10TS04 | ||
| About • | Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992 | ||
| Cite • | reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml) | ||
| S10TS05 | A New VME Timing Module: TG8 | timing, network, real-time, hardware | 360 |
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| The two accelerator divisions of CERN, namely PS and SL, are defining a new common control system based on PC, VME and Workstations. This has provided an opportunity to review both central timing systems and to come up with common solutions. The result was, amongst others, the design of a unique timing module, called TG8. The TG8 is a multipurpose VME module, which receives messages distributed over a timing network. These messages include timing information, clock plus calendar and telegrams instructing the CERN accelerators on the characteristics of the next beam to be produced. The TG8 compares incoming messages with up to 256 programmed actions. An action consists of two parts, a trigger which matches an incoming message and what to do when the match occurs. The latter part may optionally create an output pulse on one of the eight output channels and/or a bus interrupt, both with programmable delay and telegram conditioning. | |||
| DOI • | reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S10TS05 | ||
| About • | Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992 | ||
| Cite • | reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml) | ||
| S10TS08 | An Optical Fiber Phase Lock Network of a Radio Interferometer | network, linac, detector, gun | 371 |
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| A new phase-lock network using fiber-optic system was developed as a local signal distribution system for 84 antennas of the Nobeyama Radioheliograph. This network is an open loop system and consists of a master oscillator with an E/O converter, an 1-to-84 optical divider, phase stable optical fiber cables and phase stable phase-locked oscillators with O/E converters. Phase stability of the network and phase noise generated at the O/E converter are discussed. This phase-lock network insures the required phase stability of 3°/6 hours. The phase noise increases the coherent loss of 0.1 % at the correlator output, which is very low. This is the first large application of fiber optic devices to an open loop phase-lock network. Our system is very simple and phase-stable. Therefore, it is suitable to the connected array with large number of antennas. | |||
| DOI • | reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S10TS08 | ||
| About • | Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992 | ||
| Cite • | reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml) | ||
| S11LLC01 | Replacing PS Controls Front End Minicomputers by VME Based 32-bit Processors | interface, network, real-time, software | 375 |
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| The PS controls have started the first phase of system rejuvenation, targeted towards the LEP Preinjector Controls. The main impact of this phase is in the architectural change, as both the front-end minicomputers and the CAMAC embedded microprocessors are replaced by microprocessor based VME crates called Device Stub Controllers (DSC). This paper discusses the different steps planned for this first phase, i.e: - implementing the basic set of CERN Accelerator common facilities for DSCs (error handling, system surveillance, remote boot and network access); - porting the equipment access software layer; ¿ applying the Real-time tasks to the LynxOS operating system and J/O architecture, conforming to the real-time constraints for control and acquisition; - defining the number and contents of the different DSC needed, according to geographical and cpu-load constraints; - providing the general services outside the DSC crates (file servers, data-base services); - emulating the current Console programs onto the new workstations. | |||
| DOI • | reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S11LLC01 | ||
| About • | Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992 | ||
| Cite • | reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml) | ||
| S11LLC02 | Device Controllers Using an Industrial Personal Computer of the PF 2.5-GeV Electron Linac at KEK | linac, electron, gun, software | 378 |
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| Device controllers for electron guns and slits using an industrial personal computer have been designed and installed in the Photon Factory 2.5-Ge V Electron Linac at KEK. The design concept of the controllers is to realize a reliable system and good productivity of hardware and software by using an industrial personal computer and a programmable sequence controller. The device controllers have been working reliably for several years. | |||
| DOI • | reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S11LLC02 | ||
| About • | Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992 | ||
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| S11LLC03 | High Accuracy ADC and DAC Systems for Accelerator Control Applications | power-supply, operation, storage-ring, electron | 382 |
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| In the work presented here the ways of construction, the apparatus for the precision measurements and control systems incorporated in the accelerating facilities of INP are considered. All the apparatus are developed and manufactured in the standard of CAMAC. | |||
| DOI • | reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S11LLC03 | ||
| About • | Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992 | ||
| Cite • | reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml) | ||
| S11LLC04 | Driving Serial CAMAC Systems from VME Crates | operation, status, software, hardware | 386 |
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| Large control systems in the 80’s were often based on Serial CAMAC loops driven by 16 bit minicomputers. These 16 bit computers, becoming obsolete in the 90’s, are advantageously replaced by VME crates. To maintain the investment in Serial CAMAC hardware and software, an inexpensive Serial Highway Driver has been developed which operates in a VME crate as simple I/O module. With this system, both classical configurations, i.e. the Highway Driver on the I/O bus of the minicomputer and the Highway Driver in a so-called CAMAC mother crate, can be replaced with minimal costs and improved performance. This paper presents a VME Serial CAMAC Driver and compares the performance of the VME driven Serial Highway to the ones driven by minicomputers. The comparison is based on the experience gained with the beginning of the replacement of Norsk Data minicomputers by VME crates in the CERN/PS control system as described by A. Gagnaire et al. in "Replacing PS Controls front end minicomputers by VME based 32-bit processors" in S11LLC01, this conference. | |||
| DOI • | reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S11LLC04 | ||
| About • | Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992 | ||
| Cite • | reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml) | ||
| S11LLC05 | Fast Automatic System for Measurements of Beam Parameters of the MMF Linac | linac, interface, ECR, proton | 389 |
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| Fast transverse beam profile and current monitoring systems have been tested at the Linear Accelerator of Moscow Meson Factory. The signals for each system are derived from multiwire secondary emission chamber and beam current transformer. Each beam pulse is digitized by fast ADC’s. There are two modes for systems. First one is for detailed beam adjustment and second one is for normal 100 Hz rate of the MMF Linac. Essential features of the hardware, software, data acquisition, measurement accuracy and beam results are presented. | |||
| DOI • | reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S11LLC05 | ||
| About • | Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992 | ||
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| S11LLC06 | Beam Position Monitor Multiplexer Controller Upgrade at the LAMPF Proton Storage Ring | diagnostics, software, timing, interface | 393 |
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Funding: Work supported by the U.S. Department of Energy The beam position monitor (8PM) is one of the primary diagnostic tools used for the tuning of the proton storage ring (PSR) at the Clinton P. Anderson Meson Physics Facility (LAMPF). A replacement for the existing, monolithic, wire-wrapped microprocessor-based BPM multiplexer controller has been built. The controller has been redesigned as a modular system retaining the same functionality of the original system built in 1981. Individual printed circuit cards are used for each controller function to insure greater maintainability and ease of keeping a spare parts inventory. Programmable logic device technology has substantially reduced the component count of the new controller. Diagnostic software was written to support the development of the upgraded controller. The new software actually uncovered some flaws in the original CAMAC interface. |
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| DOI • | reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S11LLC06 | ||
| About • | Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992 | ||
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| S11LLC07 | The KEK PS Fast Beam Loss Monitor System | detector, hardware, booster, acceleration | 395 |
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| The higher beam intensities now being accelerated in the KEK proton synchrotron (PS) complex have increased the importance of observing the beam loss during acceleration. The beam loss should be continuously monitored to minimize radiation damage to the accelerator components. A fast loss monitor also is a good tool for observing where and when the beam is lost, by which we are able to get information on the beam dynamics. The development of a fast beam loss monitor system at KEK is described in this paper. | |||
| DOI • | reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S11LLC07 | ||
| About • | Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992 | ||
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| S11LLC09 | A CAMAC-Resident Microprocessor for the Monitoring of Polarimeter Spin States | operation, cyclotron, experiment, data-acquisition | 403 |
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| A CAMAC module for the reporting of polarimeter spin states is being developed using a resident microcontroller. The module will allow experimenters at the Indiana University Cyclotron Facility to monitor spin states and correlate spin information with other experimental data. The use of a microprocessor allows for adaptation of the module as new requirements ensue without change to the printed circuit board layout. | |||
| DOI • | reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S11LLC09 | ||
| About • | Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992 | ||
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| S11LLC10 | High Accuracy Measurement of Magnetic Field in Pulse Magnetic Elements | operation, polarization, power-supply, coupling | 406 |
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| A CAMAC module intended for measurements of instant magnetic field using coil sensor is described. It is four channel integrating ADC with current input in which signal integration time is controlled externally and may be optimized for a given signal. Original technical solution allowing to eliminate influence of the integrator capacity and switches instability on overall accuracy is described. The large accelerator facilities include a great number of magnetic elements interacting with a beam for a short period ranging from 0.01 ms to 10 ms. For example, this class of elements includes all the magnetic components of channels for particle transportation. In addition, most of these elements are operating rarely - once in 1 - 10000 s. For these elements the most optimal is the use of a pulse power supply that reduces the electric power consumption and which is most important, it solves the problem of heat removal. Though, the pulse power supply poses some problems in providing the accuracy of magnetic field and its measurements. | |||
| DOI • | reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S11LLC10 | ||
| About • | Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992 | ||
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| S12FC01 | Feedback – Closing the Loop Digitall | feedback, LLRF, cavity, software | 408 |
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Many feedback and feedforward systems are now using microprocessors within the loop. We describe the wide range of possibilities and problems that arise. We also propose some ideas for analysis and testing, including examples of motion control in the Flying Wire systems in Main Ring and Tevatron and Low Level RF control now being built for the Fermilab Linac upgrade. The standard techniques used to design and analyze analog feedback systems can also be applied to digital systems. It is desirable to consider frequency response, maximum tolerable error, and stability questions for systems controlled by processors. In modern digital systems a considerable amount of software not only replaces analog circuit functions but also allows additional features to be built into the system.
Operated by Universities Research Association for the Department of Energy. |
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| DOI • | reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S12FC01 | ||
| About • | Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992 | ||
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| S12FC02 | Generalized Fast Feedback System in the SLC | feedback, software, database, linac | 414 |
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Funding: Work supported by Department of Energy contract DE-AC03-76SF00515. A generalized fast feedback system has been developed to stabilize beams at various locations in the SLC. The system is designed to perform measurements and change actuator settings to control beam states such as position, angle and energy on a pulse to pulse basis. The software design is based on the state space formalism of digital control theory. The system is database-driven, facilitating the addition of new loops without requiring additional software. A communications system, KISNet, provides fast communications links between microprocessors for feedback loops which involve multiple micros. Feedback loops have been installed in seventeen locations throughout the SLC and have proven to be invaluable in stabilizing the machine. |
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| DOI • | reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S12FC02 | ||
| About • | Received ※ 10 October 1991 — Accepted ※ 02 January 1992 — Issued ※ 04 December 1992 | ||
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| S12FC03 | Smart Machine Protection System | interface, Ethernet, operation, software | 420 |
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Funding: Work supported by Department of Energy contract DE-AC03-76SF00515. A Machine Protection System implemented on the SLC automatically controls the beam repetition rates in the accelerator so that radiation or temperature faults slow the repetition rate to bring the fault within tolerance without shutting down the machine. This process allows the accelerator to aid in the fault diagnostic process, and the protection system automatically restores the beams back to normal rates when the fault is diagnosed and corrected. The user interface includes facilities to monitor the performance of the system, and track rate limits, faults, and recoveries. There is an edit facility to define the devices to be included in the protection system, along with their set points, limits, and trip points. This set point and limit data is downloaded into the CAMAC modules, and the configuration data is compiled into a logical decision tree for the 68030 processor. |
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| DOI • | reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S12FC03 | ||
| About • | Received ※ 02 December 1991 — Accepted ※ 02 January 1992 — Issued ※ 04 December 1992 | ||
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| S12FC04 | Feedback Systems for Local Control of Race Track Microtron RF Accelerating Sections | feedback, resonance, klystron, power-supply | 424 |
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| In order to obtain an electron beam with an excellent energy resolution and stable characteristics, a tight control of the amplitude and phase of the field in all rf accelerating sections is required. The high rf power level, dissipated in the accelerating section (AS), together with temperature dependence of the AS resonance frequency caused the creation of the original control system of resonance frequency. Amplitude, phase and resonance frequency local feedback control system have been designed. All systems are computer controlled analogue single loops. The control loops guarantee stable, repeatable amplitudes (10-1 relative error), phases (± 0.5°) of the rf fields in AS, resonance frequency of AS (± 2 kHz) and have optimal bandwidth. A model of feedback loops has been developed that agrees well with measurements. | |||
| DOI • | reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S12FC04 | ||
| About • | Received ※ 02 December 1991 — Accepted ※ 02 January 1992 — Issued ※ 04 December 1992 | ||
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| S12FC05 | PLS Beam Position Measurement and Feedback System | real-time, feedback, closed-orbit, detector | 427 |
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Funding: Work supported by Pohang Iron & Steel Co., Ltd. (POSCO) and Ministry of Science and Technology (MOST), Government of Republic of Korea. A real-time orbit correction system is proposed for the stabilization of beam orbit and photon beam positions in Pohang Light Source. PLS beam position monitor system is designed to be VMEbus compatible to fit the real-time digital orbit feedback system. A VMEbus based subsystem control computer, Mil-1553B communication network and 12 BPM/PS machine interface units constitute digital part of the feedback system. With the super-stable PLS correction power supply, power line frequency noise is almost filtered out and the dominant of beam orbit fluctuations are expected to appear below 15 Hz. DSP board in SCC for the computation and using an appropriate compensation circuit for the phase delay by the vacuum chamber, PLS real-time orbit correction system is realizable without changing the basic structure of PLS computer control system. |
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| DOI • | reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S12FC05 | ||
| About • | Received ※ 02 December 1991 — Accepted ※ 02 January 1992 — Issued ※ 04 December 1992 | ||
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| S12FC06 | A Position Feedback Control System for the Test Facility of JLC | alignment, Ethernet, feedback, laser | 431 |
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| In order to develop an alignment system for the Japan Linear Collider(JLC), we have constructed a test facility to study the position control system with multiple degrees of freedom for massive load. Noticeable points of the test facility are as follows. (1) Feedback fine alignment system which consists of piezoelectric actuators and laser interferometers. (2) High-speed controller using VME modules. (3) Level positioner driven by stepping motors. The controller can easily be connected with other computers by using RS-232C or Ethernet, so that their states such as positions can be monitored by another computer system. This facility achieves the alignment of multi-degrees of freedom with the accuracy of the order of submicron. | |||
| DOI • | reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S12FC06 | ||
| About • | Received ※ 02 December 1991 — Accepted ※ 02 January 1992 — Issued ※ 04 December 1992 | ||
| Cite • | reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml) | ||
| S12FC07 | RF Control System of the HIMAC Synchrotron | synchrotron, acceleration, feedback, electron | 434 |
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| HIMAC is a heavy Ion accelerator facility dedicated to the medical use, especially for the clinical treatment of tumors. The ion species required for the clinical treatment range from 4He to 40Ar. An RF control system of the HIMAC synchrotron has been constructed. In this control system we have adopted a digital feed back system with a digital synthesizer (DS). Combining a high power system, performance of the control system have been tested in a factory (Toshiba) with a simulator circuit of the synchrotron oscillation. Following this test, we had beam acceleration test with this control system at TARN-II in INS (Institute for Nuclear Study, University of Tokyo). This paper describes the RF control system and its tested results. | |||
| DOI • | reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S12FC07 | ||
| About • | Received ※ 02 December 1991 — Accepted ※ 02 January 1992 — Issued ※ 04 December 1992 | ||
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| S12FC08 | Development of a VME Multi-Processor System for Plasma Control at the JT-60 Upgrade | plasma, power-supply, operation, feedback | 438 |
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| Design and initial operation results are reported of a VME multi-processor system for plasma control at a large fusion device named "the JT-60 Upgrade" utilizing three 32-bit MC88100 based RISC computers and VME components. Development of the system was stimulated by faster and more accurate computation requirements for the plasma position and current control. The RISC computers operate at 25 MHz along with two cache memories named MC88200. We newly developed VME bus modules of up/down counter, analog-to-digital converter and clock pulse generator for measuring magnetic field and coil current and for synchronizing the processing in the three RISCs and direct digital controllers (DDCs) of magnet power supplies. We also evaluated that the speed of the data transfer between the VME bus system and the DDCs through CAMAC highways satisfies the above requirements. In the initial operation of the JT-60 upgrade, it has been proved that the VME multi-processor system well controls the plasma position and current with a sampling period of 250 ¿sec and a delay of 500 ¿sec. | |||
| DOI • | reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S12FC08 | ||
| About • | Received ※ 02 December 1991 — Accepted ※ 02 January 1992 — Issued ※ 04 December 1992 | ||
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| S12FC09 | Very Fast Feedback Control of Coil-Current in JT-60 Tokamak | power-supply, real-time, plasma, software | 442 |
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| A direct digital control (DDC) system is adopted for controlling thyristor converters of power supplies in the JT-60 tokamak built in 1984. Microcomputers of the DDC were 5 MHz i8086 microprocessor and programs were written by assembler language and the processing time was under l ms. They were, however, too old in hardware and too complicated in software. New DDC system has been made in the JT-60 Upgrade (JT-60U) to control the power supplies more quickly under 0.25 and 0.5 ms of the processing time and also to write the programs used by high-level language. The new system consists of a host computer and five microcomputers with microprocessor on VMEbus system. The host computer AS3260 performs on-line processing such as setting the DDC under the discharge conditions and so on. Functions of the microcomputers with a 32-bit, 20 MHz microprocessor MC68030, whose OS are VxWorks and programs are written by C language, are real-time processing such as taking in instructions from a ZENKEI computer and in feedback control of currents and voltages of coils every 0.25 and 0.5 ms. The system is now operating very smoothly. | |||
| DOI • | reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S12FC09 | ||
| About • | Received ※ 02 December 1991 — Accepted ※ 02 January 1992 — Issued ※ 04 December 1992 | ||
| Cite • | reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml) | ||
| S13MMI01 | Workstations as Consoles for the CERN-PS Complex, Setting-Up the Environment | interface, software, hardware, MMI | 446 |
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| Within the framework of the rejuvenation project of the CERN control systems, commercial workstations have to replace existing home-designed operator consoles. RISC-based workstations with UNIX®, X-window¿ and OSF/Motif¿ have been introduced for the control of the PS complex. The first versions of general functionalities like synoptic display, program selection and control panels have been implemented and the first large scale application has been realized. This paper describes the different components of the workstation environment for the implementation of the applications. The focus is on the set of tools which have been used, developed or integrated, and on how we plan to make them evolve. | |||
| DOI • | reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S13MMI01 | ||
| About • | Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992 | ||
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| S13MMI02 | General Man-Machine Interface Used in Accelerators Controls: Some Applications in CERN-PS Control Systems Rejuvenation | interface, Windows, injection, optics | 452 |
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| A large community is now using Workstations as Accelerators Computer Controls Interface, through the concepts of windows - menus - synoptics - icons. Some standards were established for the CERN-PS control systems rejuvenation. The Booster-to-PS transfer and injection process is now entirely operated with these tools. This application constitutes a global environment providing the users with the controls, analysis, visualization of a part of an accelerator. Individual commands, measurements, and specialized programs including complex treatments are available in a homogeneous frame. Some months of experience in current operation have shown that this model can be extended to the whole project. | |||
| DOI • | reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S13MMI02 | ||
| About • | Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992 | ||
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| S13MMI03 | The Replacement of Touch-Terminal Consoles of the CERN Antiproton Accumulator Complex (AAC) by Office PCs As Well as X-Windows Based Workstations | Windows, software, proton, antiproton | 456 |
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| With aging hardware and expensive maintenance and replacement possibilities, it was decided to upgrade the CERN Antiproton Accumulator Complex (AAC) touch terminal consoles with modern hardware. With significant amount of operational application software developed with touch terminals over 10 years, the philosophy adopted was to attempt a total emulation of these console functions of touch actions, graphics display as well as simple keyboard terminal entry onto the front-end computer controlling the AAC. The PC based emulation by mouse and multiple windows under MS-DOS and later, under the Windows 3 environment was realized relatively quickly; the next stage was therefore to do the same on the Unix platform using software based on X-Windows. The communications channel was established using the TCP/IP socket library. This paper reviews this work up to the operational implementation for routine control room usage for both these solutions. | |||
| DOI • | reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S13MMI03 | ||
| About • | Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992 | ||
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| S13MMI04 | The Elettra Man-Machine Interface | interface, database, GUI, software | 460 |
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| ELETTRA is a third generation Synchrotron Light Source under construction in Trieste (Italy), with beam energies between 1.5 and 2 GeV. Two networks connect three layers of computers in a fully distributed architecture. An ergonomic and unified approach in the realization of the human interface for the ELETTRA storage ring has led to the adoption of artificial reality criteria for the definition of the system synoptic representation and user interaction. Users can navigate inside a graphic database of the whole system and interactively edit specific virtual control panels to operate on the controlled equipment. UNIX workstations with extended graphic capabilities as operator consoles are used in the implementation of the PSI (Programmable Synoptic Interface), that was developed on top of X11 and the Programmer’s Hierarchical Interactive Graphics System (PHIGS) standards. | |||
| DOI • | reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S13MMI04 | ||
| About • | Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992 | ||
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| S13MMI05 | Exploiting the X-Window Environment to Expand the Number, Reach, and Usefulness of Fermilab Accelerator Control Consoles | software, network, operation, Windows | 464 |
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The Fermilab accelerator operator workstation of choice is now the Digital VAXstation running VMS and X-Window software. This new platform provides an easy to learn programming environment while support routines are expanding in number and power. The X-Window environment is exploited to provide remote consoles to users across long haul networks and to support multiple consoles on a single workstation. The integration of imaging systems, local datalogging, commercial and Physics community’s software, and development facilities on the operator workstation adds functionality to the system. The locally engineered knob/pointer/keyboard interface solves the multiple keyboard and mouse problems of a multi-screen console. This paper will address these issues of Fermilab’s accelerator operator workstations.
Operated by Universities Research Association for the Department of Energy |
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| DOI • | reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S13MMI05 | ||
| About • | Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992 | ||
| Cite • | reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml) | ||
| S13MMI06 | A Virtual Control Panel Configuration Tool for the X-Window System | interface, software, EPICS, network | 468 |
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Funding: Work supported and funded under the Department of Defense, US Army Strategic Defense Command, under the auspices of the Department of Energy. Computer Graphics Workstations are becoming increasingly popular for use as virtual process control and read back panels. The workstation’s CRT, keyboard, and pointing device are used in concert to produce a display that is in essence a control panel, even if actual switches and gauges are not present. The code behind these displays is most often specific to one display and not reusable for any other display. Recently, programs have been written allowing many of these virtual control panel displays to be configured without writing additional code. This approach allows the initial programming effort to be reapplied to many different display instances with minimal effort. These programs often incorporate many of the features of a graphics editor, allowing a pictorial model of the process under control to be incorporated into the control panel. We have just finished writing a second generation software system of this type for use with the X-Window system and the Experimental Physics and Industrial Control System (EPICS). This paper describes the primary features of our software, the framework of our design, and our observations after initial installation. |
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| DOI • | reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S13MMI06 | ||
| About • | Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992 | ||
| Cite • | reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml) | ||
| S13MMI07 | X-Window for Process Control in a Mixed Hardware Environment | vacuum, network, cryogenics, hardware | 471 |
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| X-Window is a common standard for display purposes on the current workstations. The possibility to create more than one window on a single screen enables the operators to gain more information about the process. Multiple windows from different control systems using mixed hardware is one of the problems this paper will describe. The experience shows that X-Window is a standard per definition, but not in any case. But it is an excellent tool to separate data-acquisition and display from each other over long distances using different types of hardware and software for communications and display. Our experience with X-Window displays for the cryogenic control system and the vacuum control system at HERA on DEC and SUN hardware will be described. | |||
| DOI • | reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S13MMI07 | ||
| About • | Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992 | ||
| Cite • | reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml) | ||
| S13MMI08 | An Open Software System Based on X Windows for Process Control and Equipment Monitoring | software, interface, Windows, target | 475 |
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| The construction and application of a configurable open software system for process control and equipment monitoring can speed up and simplify the development and maintenance of equipment specific software as compared to individual solutions. The present paper reports the status of such an approach for the distributed control systems of SPS and LEP beam transfer components, based on X Windows and the OSF/Motif tool kit and applying data modeling and software engineering methods. | |||
| DOI • | reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S13MMI08 | ||
| About • | Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992 | ||
| Cite • | reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml) | ||
| S13MMI09 | Porting Linac Applieation Programs to a Windowing Environment | linac, optics, software, interface | 479 |
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| We report our experience in porting Linac application programs written for CAMAC controlled hardware consoles to an X·Windows/Motif based workstation environment. Application programs acquire their parameter values from a front end computer (FEC), controlling the acceleration process, via a local area network. The timing for data acquisition and control is determined by the particle source timing. Two server programs on the FEC for repetitive acquisition and command-response mode will be described. The application programs on the workstations access a common parameter access server who establishes the necessary connection to the parameters on the FEC. It displays the parameter’s current values and allows control through Motif interactive synoptics editor and its corresponding driver program allow easy generation of synoptics displays and interaction through command panels. | |||
| DOI • | reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S13MMI09 | ||
| About • | Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992 | ||
| Cite • | reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml) | ||
| S13MMI10 | A New Workstation Based Man/Machine Interface System for the JT-60 Upgrade | interface, operation, man-machine-interface, network | 483 |
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| Development of a new man/machine interface system was stimulated by the requirements of making the JT-60 operator interface more "friendly" on the basis of the past five-year operational experience. Eleven Sun/3 workstations and their supervisory mini-computer HIDIC V90/45 are connected through the standard network; Ethernet. The network is also connected to the existing "ZENKEI" mini-computer system through the shared memory on the HIDIC V90/45 minicomputer. Improved software, such as automatic setting of the discharge conditions, consistency check among the related parameters and easy operation for discharge result data display, offered the "user-friendly" environments. This new man/machine interface system leads to the efficient operation of the JT-60. | |||
| DOI • | reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S13MMI10 | ||
| About • | Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992 | ||
| Cite • | reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml) | ||
| S13MMI11 | A Flexible Graphic Display System for Accelerator Control | network, factory, software, storage-ring | 487 |
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| A flexible graphic display system for controlling the KEK Photon Factory storage ring has been developed. A VME computer locally controls the graphic display system and communicates with the host control computer through a RS-232C link. Graphic pictures are prepared in the local system by an interactive operation using either a tablet or a keyboard. The host control computer is free from any load due to graphics processing. In an on-line operation, pictures are displayed and modified by simple command strings from the host computer. A "picture stack" method has been developed for this graphics system. The latest demanded picture always has top priority to be presented on each display monitor. Previous pictures are saved in a stack and can reappear when the current picture has been freed. | |||
| DOI • | reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S13MMI11 | ||
| About • | Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992 | ||
| Cite • | reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml) | ||
| S13MMI12 | Human-Machine Interface Software Package | software, MMI, operation, linac | 490 |
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| The Man-Machine Interface software Package (MMISP) is designed to configure the console software of PLS 60 Mev LINAC control system. The control system of PLS 60 Mev LINAC ia a distributed control system which includes the main computer (Intel 310) four local station, and two sets of industrial level console computer. The MMISP provides the operator with the display page editor, various I/0 configuration such as digital signals In/Out, analog signal In/Out, waveform TV graphic display, and interactive with operator through graphic picture display, voice explanation, and touch panel. This paper describes its function and application. | |||
| DOI • | reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S13MMI12 | ||
| About • | Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992 | ||
| Cite • | reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml) | ||
| S13MMI13 | Correlation Plot Facility in the SLC Control System | klystron, software, interface, feedback | 493 |
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Funding: Work supported by Department of Energy contract DE-AC03-76SF00515. The Correlation Plot facility is a powerful interactive tool for data acquisition and analysis throughout the SLC. This generalized interface allows the user to perform a range of operations or machine physics experiments without the need for any specialized analysis software. The user may step one or more independent parameters, such as magnet or feedback setpoints, while measuring or calculating up to 160 other parameters. Measured variables include all analog signals available to the control system, as well as calculated parameters such as beam size, luminosity, or emittance. Various fitting algorithms and display options are provided. A software-callable interface has been provided so that a host of applications can call this package for analysis and display. Such applications regularly phase klystrons, measure emittance and dispersion, minimize beam size, and maintain beam collisions at the interact ion point. |
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| DOI • | reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S13MMI13 | ||
| About • | Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992 | ||
| Cite • | reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml) | ||
| S13MMI14 | Iconic Representation of Particle Beams Using Personal Computers | interface, emittance, Windows, ion-effects | 496 |
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| The idea of representing the character of a charged particle beam by means of its emittance ellipses, is essentially a mathematical one. For quick understanding of the beam character in a more user-friendly way, unit beam cells with particles having a uniform nature, have been pictured by suitably shaped 3-D solids. The X and Y direction momenta at particular cell areas of the particle beam combine together to give a proportionate orientation to the solid in the pseudo 3-D world of the graphic screen, creating a physical picture of the particle beam. This is expected to facilitate the comprehension of total characteristics of a beam in cases of online control of transport lines and their designs, when interfaced with various ray-tracing programs. The implementation is done in an IBM-PC environment. | |||
| DOI • | reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S13MMI14 | ||
| About • | Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992 | ||
| Cite • | reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml) | ||
| S14OOP01 | Object-Oriented Programming Techniques for the AGS Booster | booster, MMI, interface, software | 500 |
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Funding: Work performed under the auspices of the U.S. Department of Energy. The applications software developed for the control system of the AGS Booster Project was written in the object-oriented language, C++. At the start of the Booster Project, the programming staff of the AGS Controls Section comprised some dozen programmer/analysts, all highly fluent in C but novices in C++. During the course of this project, nearly the entire staff converted to using C++ for a large fraction of their assignments. Over 100 C++ software modules are now available both for Booster and general AGS use, of which a large fraction are broadly applicable tools. The transition from C to C++ from a managerial perspective is discussed and an overview is provided of the ways in which object classes have been applied in Booster software development. |
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| DOI • | reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S14OOP01 | ||
| About • | Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992 | ||
| Cite • | reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml) | ||
| S14OOP02 | A Simplified Approach to Control System Specification and Design Using Domain Modelling and Mapping | kaon, factory, software, interface | 505 |
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| Recent developments in the field of accelerator-domain and computer-domain modelling have led to a better understanding of the "art" of control system specification and design. It now appears possible to "compile" a control system specification to produce the architectural design. The information required by the "compiler" is discussed and one hardware optimization algorithm presented. The desired characteristics of !he hardware and software components of a distributed control system architecture are discussed and the shortcomings of some commercial products. | |||
| DOI • | reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S14OOP02 | ||
| About • | Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992 | ||
| Cite • | reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml) | ||
| S14OOP03 | The Direct Manipulation Shell: Creating Extensible Display Page Editors | interface, MMI, software, software-component | 511 |
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Accelerator controls systems provide parameter display pages which allow the operator to monitor and manipulate selected control points in the system. Display pages are generally implemented as either hand-crafted, purpose-built programs; or by using a specialized display page layout tool. These two methods of display page development exhibit the classic trade-off between functionality vs. ease of implementation. In the Direct Manipulation Shell we approach the process of developing a display page in a manifestly object-oriented manner. This is done by providing a general framework for interactively instantiating and manipulating display objects.
Operated by the Universities Research Association, Inc., for the U.S. Department of Energy under Contract No. DE-AC02-89ER40486. |
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| DOI • | reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S14OOP03 | ||
| About • | Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992 | ||
| Cite • | reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml) | ||
| S14OOP04 | Object Oriented Programming Techniques Applied to Device Access and Control | device-server, power-supply, network, SRF | 514 |
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| Device access and device control is one of the most important tasks of any control system. This is because control implies obtaining information about the physical world by reading sensors and modifying the behaviour of the physical world by sending commands to actuators. At the European Synchrotron Radiation Facility (ESRF) effort has gone into designing and implementing a model for device access and control using as much as possible the latest ideas and methods of Software Engineering. One of the main contributions in recent years to Software Engineering has been in the field of Object Oriented Programming (OOP). Although the philosophy is not new the refinement and application of this methodology on a wide scale is. At the ESRF a model for device access and control has been developed which is based on OOP methods. This model, called the device server model, is the topic of this paper. The device server model is written entirely in C and is therefore portable. It depends on no other software and can be ported to any machine where there is a C compiler. Because the model is based on OOP it presents a user-oriented view of the world as opposed to a software- or hardware-oriented view of the world. This paper will describe the device server model. It will describe the problem of device access and the advantages of using OOP techniques to solve it. It will present the model. The methodology used to implement OOP in the device server model called Objects In C (OIC) will be described. An example of a typical device server at the ESRF will be presented. The experience gained from the device server model will be discussed. The paper will conclude with a discussion on how the device server model could be standardised to treat a wider range of problems. | |||
| DOI • | reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S14OOP04 | ||
| About • | Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992 | ||
| Cite • | reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml) | ||
| S14OOP05 | An Object-Oriented Implementation of the TRIUMF 92 MHz Booster Cavity Control System | booster, database, cyclotron, cavity | 520 |
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| A 92 MHz auxiliary accelerating cavity has been designed for installation inside the 1RIUMF cyclotron, operating up to a maximum peak voltage of 200 kV. The cavity doubles the energy gain per turn for accelerating hydrogen ions in the energy region of 400-500 MeV, and reduces by 50 % the stripping loss of the ion beam. The control system for the booster comprises a PC-based processor in a VME crate, for local control, and a 68030 processor with an Ethernet connection as the interface to the TRIUMF Central Control System. The requirements for the booster control system were established by an object-oriented requirements analysis. Afterward, an object-oriented architectural design step was used to produce the processor allocation of the design, which was then implemented using C, for the VME processor, and a commercial database and screen generator product, for the VAX user interface. | |||
| DOI • | reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S14OOP05 | ||
| About • | Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992 | ||
| Cite • | reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml) | ||
| S14OOP06 | The State Manager: A Tool to Control Large Data-Acquisition Systems | data-acquisition, interface, distributed, MMI | 524 |
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| The State Manager system (SM) is a set of tools, developed at CERN, for the control of large data-acquisition systems. A dedicated object-based language is used to describe the various components of the data-acquisition system. Each component is declared in terms of finite state machines and sequences of parametrized actions to be performed for operations such as the start and end of a run. The description, written by the user, is translated into Ada to produce a run-control program capable of controlling processes in a distributed environment A Motif-based graphical interface to the control program displays the current state of all the components and can be used to control the overall dataa-cquisition system. The SM has been used by several experiments both at CERN and other organizations. We present here the architecture of the SM, some design choices, and the experience acquired from its use. | |||
| DOI • | reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S14OOP06 | ||
| About • | Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992 | ||
| Cite • | reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml) | ||
| S15CSE01 | CASE in CERN’s Accelerator Sector | software, database, real-time, survey | 528 |
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| As in the software industry where computer aided software engineering (CASE) methodologies and tools are commonly used, CERN endeavours to introduce this technology to improve the efficiency of designing, producing and maintaining software. A large project is currently under development in the administrative area whereas a dedicated group has been set up to evaluate state of the art techniques for software development relating to physics experiments. A similar activity, though on a smaller scale, has been initiated in the accelerator sector also in view of the large amount of software that will be required by the LEP200 and the LHC projects. This paper briefly describes this technology and gives an account of current experience with the use of CASE methods and tools for technical projects in the accelerator sector at CERN. | |||
| DOI • | reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S15CSE01 | ||
| About • | Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992 | ||
| Cite • | reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml) | ||
| S15CSE02 | Automation from Pictures: Producting Real Time Code from a State Transition Diagram | database, real-time, interface, software | 535 |
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Funding: Work supported and funded under the Department of Defense, US Army Strategic Defense Command, under the auspices of the Department of Energy. The state transition diagram (STD) model has been helpful in the design of real time software, especially with the emergence of graphical computer aided software engineering (CASE) tools. Nevertheless, the translation of the STD to real time code has in the past been primarily a manual task. At Los Alamos we have automated this process. The designer constructs the STD using a CASE tool (Cadre Teamwork) using a special notation for events and actions. A translator converts the STD into an intermediate state notation language (SNL), and this SNL is compiled directly into C code (a state program). Execution of the state program is driven by external events, allowing multiple state programs to effectively share the resources of the host processor. Since the design and the code are tightly integrated through the CASE tool, the design and code never diverge, and we avoid design obsolescence. Furthermore, the CASE tool automates the production of formal technical documents from the graphic description encapsulated by the CASE tool. |
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| DOI • | reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S15CSE02 | ||
| About • | Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992 | ||
| Cite • | reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml) | ||
| S16MS02 | Framework for Control System Development | interface, distributed, network, software | 542 |
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Funding: This work was supported by the US DOE under Contract No. DE-AC03-76SF00098 Control systems being developed for the present generation of accelerators will need to adapt to changing machine and operating state conditions. Such systems must also be capable of evolving over the life of the accelerator operation. Several of the new generation of control systems hardware being developed today have the capability of fast, sophisticated control at all levels in the control hierarchy. These systems are typically hierarchical and highly distributed with extremely high I/O throughput. We have initiated the design of a framework for control system development which can accommodate the new architectures. This paper will present requirements, design decisions, and specifications that we have devised for this framework. |
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| DOI • | reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S16MS02 | ||
| About • | Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992 | ||
| Cite • | reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml) | ||
| S16MS03 | The LEP Model Interface for MAD | interface, closed-orbit, operation, network | 546 |
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| During machine studies and trouble-shooting in the LEP machine various optical parameters must be computed, which can be found quickly using the MAD program. However, the LEP operators are not all well acquainted with MAD. In order to ease their task, a simple interface called the LEP model has been written to run on the Apollo workstations of the LEP control system. It prepares jobs for MAD, sends them to a DN 10000 node for execution, and optionally plots the results. The desired machine positions and optical parameters vary between LEP runs. The LEP model contains a powerful selection algorithm which permits easy reference to any combination of positions and optical parameters in the machine. Elements can be chosen by name, by sequence number, or by element class. The choice of optical functions includes closed orbit, Twiss parameters, betatron phases, chromatic functions, element excitations, and many more. Recently matching features have been added. Communication with the control system and with MAD uses self-describing tables, i.e. tables whose columns are labelled with their name and a format code. Experience with this LEP model interface is reported. | |||
| DOI • | reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S16MS03 | ||
| About • | Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992 | ||
| Cite • | reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml) | ||
| S16MS04 | Optimization of Accelerator Control | operation, distributed, experiment, injection | 550 |
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| Expensive exploitation of charged particle accelerators is inevitably concerned with requirements of effectively obtaining of the best characteristics of accelerated beams for physical experiments. One of these characteristics is intensity. Increase of intensity is hindered by a number of effects, concerned with the influence of the volume charge field on a particle motion dynamics in accelerator’s chamber. However, ultimate intensity, determined by a volume charge, is almost not achieved for the most of the operating accelerators. This fact is caused by losses of particles during injection, at the initial stage of acceleration and during extraction. These losses are caused by deviations the optimal from real characteristics of the accelerating and magnetic system. This is due to a number of circumstances, including technological tolerances on structural elements of systems, influence of measuring and auxiliary equipment and beam consumers’ installations, placed in the closed proximity to magnets, and instability in operation of technological systems of accelerator. Control task consists in compensation of deviations of characteristics of magnetic and electric fields by optimal selection of control actions. As for technical means, automation of modem accelerators allows to solve optimal control problems in real time. Therefore, the report is devoted to optimal control methods and experimental results. | |||
| DOI • | reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S16MS04 | ||
| About • | Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992 | ||
| Cite • | reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml) | ||
| S16MS05 | Modelling and Optimization of Beams Dynamics in Linac | focusing, linac, solenoid, simulation | 555 |
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| Problems of acceleration and focusing in linear accelerators are considered. A general mathematical problem of charged particle beam control is formulated. Methods and algorithms of solving these problems are developed. Problems of mathematical simulation of beam dynamics are discussed in detail. Some beam quality functions depending on all particle tracks are proposed. Mathematical methods are used for choosing parameters of forming systems. Designed codes allow to simulate and optimize beam dynamics. This report is devoted to the realization of general approach to problem of dynamical system trajectories control in accelerating and focusing structures. | |||
| DOI • | reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S16MS05 | ||
| About • | Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992 | ||
| Cite • | reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml) | ||
| S17AIA01 | Development of a Diagnostic System for Klystron Modulators Using a Neural Network | linac, klystron, network, diagnostics | 558 |
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| The diagnostic system for klystron modulators using a neural network has been developed. Large changes in the voltage and current of the main circuit in a klystron modulator were observed just several ten milli-seconds before the modulator experienced trouble. These changes formed a peculiar pattern that depended on the parts with problems. Diagnosis was possible by means of pattern recognition. The recognition test of patterns using a neural network has shown good results. This system, which is built in a linac control system, is presently being operated so as to collect new trouble patterns and to carry out tests for practical use. | |||
| DOI • | reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S17AIA01 | ||
| About • | Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992 | ||
| Cite • | reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml) | ||
| S17AIA02 | Diagnostic Expert System in the RF Linac | linac, network, diagnostics, operation | 562 |
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| A prototype diagnostic expert system (ES) was developed for the Photon Factory 2.5-GeV electron/ positron LINAC injector system. The ES has been on-lined with the conventional linac computer network for receiving real data. This project was undertaken in an attempt to reduce the linac operator’s mental workload, diagnosis duties, and to explore Artificial Intelligence (AI) technologies. The outlook for ES and its problems, and what has been achieved are outlined in this presentation. | |||
| DOI • | reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S17AIA02 | ||
| About • | Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992 | ||
| Cite • | reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml) | ||
| S17AIA03 | GLAD: A Generic Lattice Debugger | MMI, operation, quadrupole, software | 566 |
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Funding: Work supported by Department of Energy contract DE-AC03-76SF00515. Today, numerous simulation and analysis codes exist for the design, commission, and operation of accelerator beam lines. There is a need to develop a common user interface and database link to run these codes interactively. This paper will describe a proposed system, GLAD (Generic LAttice Debugger), to fulfill this need. Specifically, GLAD can be used to find errors in beam lines during commissioning, control beam parameters during operation, and design beam line optics and error correction systems for the next generation of linear accelerators and storage rings. |
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| DOI • | reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S17AIA03 | ||
| About • | Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992 | ||
| Cite • | reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml) | ||
| S17AIA04 | Development of Operator Thinking Model and its Application to Nuclear Reactor Plant Operation System | operation, experiment, network, monitoring | 570 |
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| At first, this paper presents the developing method of an operator thinking model and the outline of the developed model In next, it describes the nuclear reactor plant operation system which has been developed based on this model. Finally, it has been confirmed that the method described in this paper is very effective in order to construct expert systems which replace the reactor operator’s role with AI (artificial intelligence) systems. | |||
| DOI • | reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S17AIA04 | ||
| About • | Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992 | ||
| Cite • | reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml) | ||
| S18BPA02 | Frequency Domain Analyses of Schottky Signals Using a VME Based Data Server and a Workstation Client | software, proton, antiproton, injection | 579 |
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| Schottky signals are extensively used for observation, setting-up and operation of CERN’s Antiproton rings, namely the AC, the AA and LEAR. Measurement of these signals is, at present, carried out by a series of commercial instruments. These instruments have to be individually controlled and read by each application program. The operational use of the system is limited by the capabilities of the individual instruments. The first objective for the new system was to provide, as far as possible, a true "server". The "client" application program simply requests the data it requires. It is then supplied with measured and processed data. This provides the operator with a fast response by having ready processed data always available. Our second goal was to make the system operationally simple, with multiple windows and presentation on a single screen. This paper discusses some aspects of this implementation and applications for the antiproton production, collection, and storage rings. | |||
| DOI • | reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S18BPA02 | ||
| About • | Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992 | ||
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| S18BPA03 | New Controls for the CERN-PS Hadron Injection Process Using Operating Tools and High-Level Accelerator Modelling Programmes | injection, emittance, betatron, timing | 583 |
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| A new control system using man-machine interface tools with workstations as consoles has been successfully put into operation for the injection of hadrons in the CERN Proton Synchrotron (PS). This paper mainly focuses on specialized modelling programmes involving complex treatments for an optimum operation of the injection process. These programmes include the control of the injection timings, the measurement of the beam emittance with an estimation of how well the incoming beam is matched, and the correction of oscillations at injection. The infrastructure and the programming environment underlaying the new control system are described elsewhere 3¿ The outstanding feature of the internal structure of all these modelling programmes is that they carry out three kinds of data interaction: the input, that is the measurements (e.g. beam time positions, profiles and trajectories), the physical parameters (e.g. required times for synchronization, beam emittance, beam space position and angle at injection), and the output, mainly the hardware values (e.g. preset counter settings, currents to apply to injection steering magnets). | |||
| DOI • | reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S18BPA03 | ||
| About • | Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992 | ||
| Cite • | reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml) | ||
| S19SP01 | Control Protocol: The Proposed New CERN Standard Access Procedure to Accelerator Equipment. Status Report | operation, software, instrumentation, vacuum | 591 |
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| Control protocol provides a normalized access procedure for equipment of the same kind from a control system. Modelisation and the subsequent identification of functionalities with their parameters, variables and attributes have now been carried out at CERN for representative families of devices. ISO specifications, such as the ASN.1 metalanguage for data structure representation and MMS definitions and services have, to some extent, been introduced in the design for generality and compatibility with external world. The final product of this design is totally independent of the control systems and permits object oriented implementations in any controls frame. The present paper describes the different phases of the project with a short overview of the various implementations under development at CERN. | |||
| DOI • | reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S19SP01 | ||
| About • | Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992 | ||
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| S20PD01 | Man-Machine Interface Workshop Summary | interface, man-machine-interface, Windows, MMI | 595 |
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Funding: Work supported in part by the U.S. Department of Energy This report is a summary of the Man-Machine Interface Workshop that took place on 14 November 1991 as part of the 1991 International Conference on Accelerator and Large Experimental Physics Control Systems in Tsukuba, Japan. The conference was sponsored by KEK, the Japanese High Energy Physics Laboratory. |
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| DOI • | reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S20PD01 | ||
| About • | Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992 | ||
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| S20PD02 | Summary of Panel Discussion on Standards and World-Wide Sharing of Software | software, network, database, hardware | 597 |
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| It has been a dream in the accelerator community for some time that software developed for one control system be easily transferable to and usable at another. Until recently this goal was seldom realized in practice. This has been primarily because the various control systems have been developed inhouse with little standardization among them. The world of accelerators was dominated until a few years ago by very large machines constructed for doing high energy physics. The large laboratories could likewise afford large controls groups, which were able to build these complete systems from the ground up. However the accelerator scene has now shifted, with a large fraction of the new work being done at much smaller installations, installations which cannot afford the large staffs previously employed in control system production. Different approaches to this problem were outlined in the discussion. | |||
| DOI • | reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S20PD02 | ||
| About • | Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992 | ||
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| S20PD03 | Panel Discussion on Management of Control Systems | software, experiment, hardware, factory | 598 |
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| In scientific organizations one often encounters the opinion that management is a trivial activity and that project managers enjoy the easy side of the project life, far away from where the real work is. However, examples abound of projects failing to meet their objectives, running behind schedule, overrunning costs, etc., because of poor management. To several aspects which are crucial for the successful completion of a project the attention they deserve has to be paid if the project is to meet its objectives within the constraints that are imposed upon it. Whereas the engineers do things, the manager gets things done; managers are particularly concerned with: # what is planned to be done: i.e. the product which should be delivered, in our case the control system, # how long will the project take: i.e. schedule, # how one will know when the project is finished: completion criteria, # how much will it cost to implement and to maintain: Le. the cost. These issues have been discussed in the panel discussion. | |||
| DOI • | reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S20PD03 | ||
| About • | Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992 | ||
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| S21CS01 | Issues in Accelerator Controls | software, operation, network, hardware | 602 |
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| When attempting to make conference summaries, one is always tempted - and possibly even expected - to "discern" and then to point out the "great lines" of evolution of the subject and then to make predictions, "far sighted" if possible. Of course such an activity is jolly risky since at the beginning of any such trend, a few discernible examples and implementations of one sort, or a new product here and there, do not necessarily make a trend by the time the developments have really taken on, however, the "great line of evolution" has become obvious to just about everyone and chances are that the trend is already approaching its end and that some other trend - at that point with hardly decodable patterns - is already infiltrating the old situation which - since it is by now known - has become comfortable and homely and - thank God - at long last more or less efficiently usable. | |||
| DOI • | reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S21CS01 | ||
| About • | Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992 | ||
| Cite • | reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml) | ||