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| TOAB01 |
The New FAIR Accelerator Complex at GSI: Project, Controls Challenges, and First Steps
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controls, antiproton, ion, proton |
59 |
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- U. Krause, W. Panschow, V. R.W. Schaa, W. Schiebel, P. Schuett, R. Baer
GSI, Darmstadt
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An international Facility for Antiproton and Ion Research (FAIR) was proposed by GSI in 2001 and is currently under development. This new accelerator complex will be a significant extension to the existing GSI accelerator chain and will provide a range of particle beams from protons and antiprotons to ion beams of all elements up to uranium, as well as secondary beams of short-lived rare isotope beams. The central parts of the FAIR facility are a superconducting double-ring synchrotron and a system of storage rings. This presentation covers the status and scope of the FAIR project and its technical and organizational challenges, in particular in respect to the accelerator control system. As many parts of the new FAIR facility will be independently developed as in-kind contributions by international FAIR partner institutes, one significant point is integration and interface management. Among many other aspects, one important technical consideration is a high degree of parallel beam operation for the different research programs that imposes ambitious demands on the timing and cycle management system. We will discuss first steps towards a new FAIR control system.
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| TPPA14 |
Scope-Embedded IOC Development in SSRF
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linac, booster, controls, pick-up |
117 |
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- Y. Z. Chen, Z. C. Chen, D. K. Liu, W. M. Zhou, Y. B. Leng
SINAP, Shanghai
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The dozen of wide-band beam diagnostics sensors such as integration current transformer, faraday cup, and wall current monitors were used in SSRF(Shanghai Synchrtron Radiation Facility) Linac and transport line to measure bunch shape and charge. Few hundreds MHz bandwidth required very high speed digitizer like digital sampling scope. On the other hand SSRF control system was built on EPICS platform. So Windows PC based Tektronics scope, which equipped with TekVISA interface, Shared Memory IOCcore EPICS interface, and Labview application was chosen to do this data acquisition. The details of software design and the performance evaluation results for TDS7104 and DPO7054 will be described in this paper.
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| TPPA18 |
Application of a Virtualization Technology to VME Controllers
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controls, linac, vacuum, diagnostics |
123 |
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- T. Fukui
RIKEN Spring-8, Hyogo
- T. Ohata, T. Masuda
JASRI/SPring-8, Hyogo-ken
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The SPring-8 control framework MADOCA employs client-server architecture based on Sun RPC (Remote Procedure Call) for device control. An RPC server process named Equipment Manager (EM) is running on each VME controller operated by Solaris. It executes control commands from client applications one by one. As a simple approach to parallel (exactly concurrent) execution of the EM process, we apply the virtualization technology of Solaris Containers to VME controllers. Solaris Containers virtualizes operating system environment within the OS level. It consumes little disk space (~30 MB) to add a new virtual host. All the virtual hosts can access devices on the VME bus through a real host. We don’t need to modify the MADOCA framework and device drivers at all to run the EM process on the virtual host. Therefore, we can easily apply the virtualization technology to the VME controllers which don’t have enough disk space. The technology allows us not only to consolidate but also to logically partition the deployed VME controller. We will report some applications of Solaris Containers to the VME controllers, in particular from the viewpoint of the system performance and management.
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| TPPA28 |
PLC-Based Beam Charge Interlock System for Radiation Safety in the KEKB Injector Linac
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controls, linac, injection, radiation |
149 |
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- K. Furukawa, M. Satoh, T. Suwada, E. Kadokura
KEK, Ibaraki
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A new PLC-based beam-charge interlock system is under development for radiation safety at the KEKB injector linac. This system restricts a prescribed amount of integrated beam charges passing through at several locations along the linac for machine protection, and it also monitors the amount of integrated beam charges injecting to four different storage rings (KEKB e+ & e- storage rings, PF, PF-AR) at the linac beam switchyard. The beam charges delivered from an electron gun are measured with the PLC-based beam-charge interlock system. This system comprises wall-current monitors, beam-charge integration circuits, and a PLC-based control system. This system generates and sends beam abort signals directly to another radiation safety control system with hard-wire cables when the amount of the integrated beam charges is beyond the prescribed threshold level. In this report we describe the new design of the PLC-based beam-charge interlock system, and especially several software developments and performances implemented on the PLC are described.
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| TPPB20 |
SSRF Beam Instrumentations System
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linac, booster, instrumentation, pick-up |
205 |
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- J. Chen, Y. Z. Chen, Z. C. Chen, D. K. Liu, K. R. Ye, C. X. Yin, J. Yu, L. Y. Yu, R. Yuan, G. B. Zhao, W. M. Zhou, Y. Zou, Y. B. Leng
SINAP, Shanghai
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SSRF is equipped with various beam instrumentations, in which the Linac part has been working well since the start of the commissioning this year, and the booster and storage ring parts are still under implementation and commissioning. The commercial products were adopted to build this system as much as possible. The all-in-one electron beam position monitor processor, Libera, was used for whole facility to provide single-pass, first-turn, turn-by-turn, COD, and fast application beam position data. The Bergoz NPCT175 parametric current transformers were used for DC current measurement in the booster and storage ring. The various optical beam diagnostic systems, such as synchrotron radiation interferometers for precise beam-size measurement, the fast gated camera, and the bunch length monitor will be equipped in the dedicated diagnostics beam line. Data acquisition for beam instrumentation system should be a part of control system, developed on an EPICS platform. There are three kinds of Input Output Controllers (IOCs) used in diagnostics: VxWorks-based VME IOCs, Linux-based Libera IOCs, and Windows-based PC IOCs.
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| TPPB42 |
The Selection, Development and Application of PLC Solutions for the Diamond Light Source
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controls, vacuum, linac, synchrotron |
256 |
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- P. H. Amos, P. Hamadyk, M. T. Heron, H. S. Shiers, S. C. Lay
Diamond, Oxfordshire
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Diamond Light Source set out to address a wide range of control system requirements, from process control to interlocking with a minimum number of PLC types. This resulted in standardization of PLCs from just two manufacturers. Siemens was chosen for high-end process control and Omron for a variety of other applications, including interlocking and protection. These were then applied to a large number of applications, which have been addressed wherever possible using standard solutions. The details of this approach, and solutions managed through it, including procurement of turnkey systems by industry, and how future obsolescence is being addressed are all described.
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| TOPB03 |
The Evolution of the ELETTRA Control System
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controls, booster, feedback, radio-frequency |
265 |
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- L. Pivetta, C. Scafuri
ELETTRA, Basovizza, Trieste
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The evolution of the ELETTRA control system is presented by focusing on the major technical upgrades. The ElETTRA control system has been in operation since 1993. The orginal control system architecture was based on a three layer design. A field bus connected the low level computers used to interface the accelerator devices whilst a ten megabit shared Ethernet network linked the middle layer computers to the servers and operator workstations. A first control system upgrade started in 1998 in order to dismiss the field bus and to provide more computing power. A couple of years later a major rework of the network infrastructure was carried out with the introduction of a switched Ethernet architecture. Starting from 2003, in view of the construction of a new booster injector for the storage ring and of the FERMI@elettra free electron laser, new control system hardware and software platforms have been selected. Driven by the additional necessity of cutting development and maintenance costs, the Tango control system has been adopted. The tools developed in order to effectively manage the integration and coexistence of the legacy and new control system are described.
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Slides
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| WOAA02 |
Outsourcing, Insourcing, and Integration of Control Systems in the Australian Synchrotron
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controls, synchrotron, injection, site |
276 |
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- M. Clift, B. W. Karnaghan, W. K. Lewis, A. C. Starritt, R. I. Farnsworth
ASP, Clayton, Victoria
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The Australian Synchrotron was built in less than four years and under budget with many subsystems outsourced. This presentation discussed some of the issues involved. It discusses the reasons for outsourcing, the approach taken, and some of the technical issues involved, including open source versus proprietary software, testing, training, collaboration, and source control. The importance of a solid engineering approach, specification, interface, systems design, and in-house ability are discussed. A discussion of engineering standards, both hardware and software, is presented. A balance of the positive and negative elements of the approach is put forward, and some suggestions for future projects run on similar lines are made.
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Slides
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| WOPA02 |
Remote Operations of an Accelerator Using the Grid
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controls, feedback, instrumentation, simulation |
303 |
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- M. Pugliese, M. Prica
ELETTRA, Basovizza, Trieste
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The GRIDCC* is a three-year project funded by the European Commission. Its goal is integrating instruments and sensors with the traditional Grid resources. The GRIDCC middleware is being designed bearing in mind use cases from a very diverse set of applications, and as the result, the GRIDCC architecture provides access to the instruments in as generic a way as possible. GRIDCC is also developing an adaptable user interface and a mechanism for executing complex workflows in order to increase both the usability and the usefulness of the system. The new middleware is incorporated into significant applications that will allow the software validation in terms both of functionality and quality of service. The pilot application this paper focuses on is applying GRIDCC to support Remote Operations of the ELETTRA synchrotron radiation facility. We describe the results of implementing via GRIDCC complex workflows involved in the both routine operations and troubleshooting scenarios. In particular, the implementation of an orbit correction feedback shows the level of integration of instruments and traditional Grid resources which can be reached using the GRIDCC middleware.
* http://www.gridcc.org.
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Slides
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| WPPA16 |
Upgrade of BPM Data Acquisition System Using Reflective Memory at PLS
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controls, power-supply, pick-up, synchrotron |
348 |
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- J. Choi, K. M. Ha, H.-S. Kang, E.-H. Lee, J. C. Yoon, J. W. Lee
PAL, Pohang, Kyungbuk
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We upgraded the BPM data acquisition system of the PLS 2.5-Gev storage ring with the use of RFM (Reflective Memory). Our present BPM data acquisition system is based on EPICS VME IOC. It uses an analog-to-digital converter with 16-bit resolution and a 100-KHz conversion rate to digitize BPM raw electric signals. To get better position data from the digitized raw BPM data, we developed BPM data-averaging software utilizing RFM. With this averaging software, we could average 4000 samples of raw BPM data with the refresh rate of 2 seconds and get much better position data compared with the previous one. We installed data-averaging software and reflective memory modules into 12 local BPM IOCs for the routine operation. We are also planning to develop a fast global feedback system using RFM to improve beam quality in the near future.
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| WPPA18 |
A Virtualization of Operator Consoles on Beamline Control System
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controls, power-supply |
353 |
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- T. Fukui
RIKEN Spring-8, Hyogo
- M. Ishii, M. K. Kodera, M. T. Takeuchi, T. Ohata
JASRI/SPring-8, Hyogo-ken
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We introduced the virtualization technology to more than 50 workstations in SPring-8 beamlines to reduce into 8 servers. The virtualization technology is a hot topic for server computing. It enables to consolidate a lot of computers to a few host computers. We presented the experiment of introduction of the virtualization technology at previous ICALEPCS conference. In SPring-8, about 50 beamlines are in operation. Each beamline had one workstation for an operator console to avoid interference from other beamline operation. The virtualization technology reduces hardware and maintenance costs while ensuring independency of a computing environment in each beamline. This paper describes the process and the result of the migration to the virtualization environment. In addition, we show changes of a topological network configuration for the virtualization environment.
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| WPPA19 |
Status of the DELTA Control System
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controls, electron, synchrotron, feedback |
356 |
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- P. Hartmann, O. Kopitetzki, G. Schuenemann, P. Towalski, D. Schirmer
DELTA, Dortmund
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Since the change-over to EPICS in 2001, further developments in soft- and hardware and continuous improvements concerning the control system infrastructure as well as the accelerator modelling have been performed. A set of new applications like a bunch filling pattern control and a revised tune measurement software have been established. Furthermore, a new web-server including a content management system has been installed. The complete EPICS data logging and the electronic shift book entries are now managed by a MySQL database. Necessary preparations for automatic machine operation (unmanned control room) are in progress. This article summarizes the activities during the last years and plans for the future.
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| WPPB06 |
Synchronization System of Synchrotron SOLEIL
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linac, booster, synchrotron, injection |
409 |
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- P. Betinelli, L. Cassinari, J.-M. Filhol, B. Gagey, F. Langlois, A. Loulergue, J. P. Ricaud
SOLEIL, Gif-sur-Yvette
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To bring electrons from the LINAC to the storage ring, much equipment must be triggered synchronously to the beam. The timing system provides the time base needed for this purpose. More than a simple clocks distribution system, it is a real network, broadcasting clocks and data all over the synchrotron. Data are used to send events to equipment: for example, injection of electrons inside the booster, extraction of electrons from the booster to the storage ring, or even triggering diagnostic equipment. The timing system is made up of a standalone CENTRAL system and several cPCI LOCAL boards. The CENTRAL system provides clocks and data and broadcasts them to the LOCAL boards through an optical fiber network. LOCAL boards are placed close to the equipment, and they provide delayed signals to trigger them. These delays can be precisely adjusted by the user, making the equipment synchronous with the electron beam. After a brief explanation of our needs, the presentation describes the timing systems (architecture, performance, etc.) used at SOLEIL. It also describes the results after a year of use: the good, the bad, and the truth (well, maybe).
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| WPPB12 |
High-Speed X-ray Imaging at NSLS
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controls, synchrotron, SNS |
424 |
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- D. P. Siddons, S. K. Feng
BNL, Upton, Long Island, New York
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We describe two projects currently underway at National Synchrotron Light Source (NSLS). The first is an inexpensive yet high-performance image acquisition system utilizing a low-cost firewire camera, a PMC firewire interface board, EPICS and the in-house written RTEMS-mvme5500 Board Support Package. The BSP, EPICS/RTEMS software and firewire drivers demonstrate a high throughput of image display for the 1024x768x8bit mode of 30 frames per second (fps) of data transfer, while triggering EPICS display at 30 Hz simultaneously. The second is the readout system for the LCLS X-ray Active Matrix Pixel Sensor (XAMPS) detector. The specification of the detector readout requires a 1024x1024x14bit image to be stored to disk at 120 Hz, an average data rate of 252 Mega Bytes/sec. A faster SBC was chosen to be interfaced with a FPGA based PMC card and Fiber Channel storage system. This cost-effective prototype will function efficiently and reliably as a data acquisition system for the implementation of the XAMPS detector developed at the NSLS. Modern software and the use of commercial hardware technology has cut our cost of both systems, and delivered excellent performance.
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| WPPB20 |
Extended MicroIOC Family (LOCO)
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ion, vacuum, controls, monitoring |
439 |
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- D. Golob, R. Kovacic, M. Pelko, M. Plesko, A. Podborsek, M. Kobal
Cosylab, Ljubljana
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MicroIOC is an affordable, compact, embedded computer designed for controlling and monitoring of devices via a control system (EPICS, ACS, and TANGO are supported). Devices can be connected to microIOC via Ethernet, serial, GPIB, other ports, or directly with digital or analog inputs and outputs, which makes microIOC a perfect candidate for a platform that integrates devices into your control system. Already over 90 microIOCs are installed in 18 labs over the world. LOgarithmic COnverter (LOCO) is a specialized microIOC used as a high-voltage power-supply distribution system for vacuum ion pumps. A single high-voltage power-supply controller can be used for delivering power to multiple ion pumps. A highly-accurate logarithmic-scale current measurement is provided on each pump, enabling an affordable and reliable pressure measurement ranging from 10-12 to 10-4 mbar.
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| WPPB36 |
Ripple Diagnostic on BESSY II Power Supplies
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power-supply, controls, dipole, background |
466 |
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- T. Birke, T. Schneegans, I. Müller
BESSY GmbH, Berlin
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Keeping the ripple of power-supply currents within the specification limits is crucial for the beam stability of the BESSY storage ring. Malfunctioning or aged electronic devices cause an increase of output ripple over the years. This increase is hardly noticed by the operator or operation analysis because the slow integrating AD converters for the current readbacks filter out the ripple. Furthermore, it is almost impossible to find the connection between certain beam movements or beam noise and the faulty power supply causing it. To improve this situation, ripple information for every power supply is required within the control system. The latest series of the CAN bus-connected power-supply interface cards used at BESSY provide an additional fast AD converter. With a sampling frequency of 83.5kHz, this ADC samples ripple information over one period of the mains voltage. The results are transferred over the CAN bus to the EPICS-based control system and can be processed in the usual ways. Using this setup, even temporarily increased ripple can be detected without complex measurement methods.
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| ROAA03 |
Injection, Ramping and Extraction Timing for the Duke Booster
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booster, injection, extraction, controls |
491 |
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- G. Y. Kurkin
BINP SB RAS, Novosibirsk
- S. F. Mikhailov, V. Popov, Y. K. Wu, S. M. Hartman
FEL/Duke University, Durham, North Carolina
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A booster synchrotron capable of ramping from 0.25 to 1.2 GeV was recently commissioned at Duke University as part of the High Intensity Gamma Source upgrade. The triggering and timing system uses a combination of software logic and triggers, digital delay generators, and hardware synchronizers to coordinate the linac injector, booster synchrotron and electron storage ring. The injection system has been commissioned with a short pulse photo-injector linac into a single booster RF bucket and to two booster buckets separated by about half the circumference. It has also been commissioned with a long electron pulse from the injection linac into all 19 buckets. The extraction system, combined with short pulse kickers, can extract any of the booster's 19 electron bunches in to any of the storage ring's 64 bunches. Ramping is controlled by programmable VME based waveform generators triggered from the timing system. The system offers flexibility for commissioning and operations and provides a simple interface to the operator.
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Slides
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| RPPA15 |
Initial Performance Results of the APS P0 Feedback System
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feedback, controls, photon, single-bunch |
550 |
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- C. Yao, N. P. Di Monte
ANL, Argonne, Illinois
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The Advanced Photon Source electron beam exhibits transverse instability when a large amount of charge is present in a single bunch. The P0 feedback system stabilizes the transverse motion of the beam under these circumstances. The initial requirement was to stabilize a single bunch of electrons in the horizontal plane. By implementing the stabilizer in an FPGA and using the parallel processing capabilities provided by this hardware, it is possible to stabilize 324 bunches per turn in both the horizontal and vertical planes. The stabilizer consists of 648 32-tap finite impulse response filters. This paper discusses the challenges in achieving this performance and some issues in interfacing to a Coldfire IOC running RTEMS. Initial test results of the system response are presented.
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| RPPA17 |
A Physics Based Approach for Magnet Control in a Booster and Storage Ring
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booster, controls, wiggler, quadrupole |
553 |
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- S. F. Mikhailov, Y. K. Wu, S. M. Hartman
FEL/Duke University, Durham, North Carolina
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At Duke University, a booster synchrotron was recently commissioned as part of the HIGS upgrade. For the ramping magnet power supply controls, we followed an approach previously implemented for the Duke Storage Ring controls. The high-level operator interface is presented in terms of the physics quantities of the accelerator, i.e., the effective focusing strength of the magnets. This approach allows for a tighter integration of the control system with physics modeling programs and facilitates machine studies. The approach also simplifies operations of the accelerators by presenting an interface nearly independent of machine energy. For the booster, nonlinearities of the magnets, a result of its extremely compact footprint, are incorporated in to the low-level software while providing a high level of machine tunability. For the storage ring, feed forward compensations built on the effective strength of the magnets simplify tuning of the machine over a wide range of electron beam energies or wiggler settings. This approach provides for a good match to the diverse operational modes supported by the Duke Storage Ring.
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| RPPB35 |
Administration of Control Systems at the Advanced Photon Source Using Applications Organizing Index
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controls, linac, booster, photon |
686 |
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- N. D. Arnold, D. E.R. Quock
ANL, Argonne, Illinois
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Applications Organizing Index (AOI) is a relational database tool that has been implemented at the Advanced Photon Source (APS) to aid in the management of more than 600 unique control system applications. AOI provides control system developers an intuitive view of and navigation links to the components that make up a single control system such as source code files, operator displays, process variables, work history notes, programmable components, validation procedures, drawings, and more. The foundation for the Applications Organizing Index tool is the collaborative effort between several Experimental Physics and Industrial Control System (EPICS) sites to build the common relational database schema for documenting large and complex particle accelerator control systems, Integrated Relational Model of Installed Systems (IRMIS). This paper describes the evolution of AOI as it became populated with APS control systems component data and as users’ requests for new features of AOI became apparent.
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