Paper | Title | Other Keywords | Page |
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MOPPC026 | Bake-out Mobile Controls for Large Vacuum Systems | controls, PLC, status, software | 119 |
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Large vacuum systems at CERN (Large Hadron Collider, the Low Energy Ion Rings…) require bake-out to achieve ultra-high vacuum specifications. The bake-out cycle is used to decrease the outgassing rate of the vacuum vessel and to activate the Non-Evaporable Getter (NEG) thin film. Bake-out control is a Proportional-Integral-Derivative (PID) regulation with complex recipes, interlocks and troubleshooting management and remote control. It is based on mobile Programmable Logic Controller (PLC) cabinets, fieldbus network and Supervisory Control and Data Acquisition (SCADA) application. CERN vacuum installations include more than 7 km of baked vessels; using mobile cabinets reduces considerably the cost of the control system. The cabinets are installed close to the vacuum vessels during the time of the bake-out cycle. Mobile cabinets can be used in all the CERN vacuum facilities. Remote control is provided by fieldbus network and SCADA application. | |||
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Poster MOPPC026 [3.088 MB] | ||
MOPPC027 | The Control System of CERN Accelerators Vacuum [LS1 Activities and New Developments] | controls, PLC, linac, software | 123 |
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After 3 years of operation, the LHC entered its first Long Shutdown period (LS1), in February 2013. Major consolidation and maintenance works will be performed across the whole CERN’s accelerator chain, in order to prepare the LHC to restart at higher energy, in 2015. The rest of the accelerator complex shall resume in mid-2014. We report on the recent and on-going vacuum-controls projects. Some of them are associated with the consolidations of the vacuum systems of LHC and of its injectors; others concern the complete renovation of the controls of some machines; and there are also some completely new installations. Due to the wide age-span of the existing vacuum installations, there is a mix of design philosophies and of control-equipment generations. The renovation and the novel projects offer an opportunity to improve the Quality Assurance of vacuum controls by: identifying, documenting, naming and labelling all pieces of equipment; minimising the number of equipment versions with similar functionality; homogenising the control architectures, while converging to a single software framework. | |||
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Poster MOPPC027 [67.309 MB] | ||
MOPPC030 | Developments on the SCADA of CERN Accelerators Vacuum | controls, PLC, software, database | 135 |
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During the first 3 years of LHC operation, the priorities for the vacuum controls SCADA were to attend to user requests, and to improve its ergonomics and efficiency. We now have reached: information access simplified and more uniform; automatic scripts instead of fastidious manual actions; functionalities and menus standardized across all accelerators; enhanced tools for data analysis and maintenance interventions. Several decades of cumulative developments, based on heterogeneous technologies and architectures, have been asking for a homogenization effort. The Long Shutdown (LS1) provides the opportunity to further standardize our vacuum controls systems, around Siemens-S7 PLCs and PVSS SCADA. Meanwhile, we have been promoting exchanges with other Groups at CERN and outside Institutes: to follow the global update policy for software libraries; to discuss philosophies and development details; and to accomplish common products. Furthermore, while preserving the current functionalities, we are working on a convergence towards the CERN UNICOS framework. | |||
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Poster MOPPC030 [31.143 MB] | ||
MOPPC051 | NSLS-II Booster Interlock System | controls, operation, status, interlocks | 202 |
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Being responsible for 3 GeV booster synchrotron for the National Synchrotron Light Source (NSLS-II, BNL, USA) design and manufacture, Budker Institute of Nuclear Physics also designs the booster control and diagnostic system. Among others, the system includes interlock system consisting of equipment protection system, vacuum level and vacuum chamber temperature control system, beam diagnostic service system. These subsystems are to protect facility elements in case of vacuum leakage or chamber overheating and to provide subsidiary functions for beam diagnostics. Providing beam interlocks, it processes more then 150 signals from thermocouples, cold and hot cathode vacuum gauges and ion pump controllers. The subsystems contain nine 5U 19" chassis with hardware of each based on Allen-Bradley CompactLogix Programmable Logic Controller. All the interlock related connections are made with dry contacts, whereas system status and control is available through EPICS channel access. All operator screens are developed with Control System Studio tooling. This paper describes configuration and operation of the booster interlock system. | |||
MOPPC106 | Status Report of RAON Control System | controls, EPICS, timing, PLC | 356 |
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The RAON is a new heavy ion accelerator under construction in South Korea, which is to produce a variety of stable ion and rare isotope beams to support various researches for the basic science and applied research applications. To produce the isotopes to fulfill the requirements we have planed the several modes of operation scheme which require fine-tuned synchronous controls, asynchronous controls, or both among the accelerator complexes. The basic idea and development progress of the control system as well as the future plan are presented. | |||
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Poster MOPPC106 [1.403 MB] | ||
MOPPC108 | Status of the NSLS-II Booster Control System | controls, booster, timing, operation | 362 |
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The booster control system is an integral part of the NSLS-II control system and is developed under EPICS. The booster control system includes six IBM Systems x3250 M3 and four VME3100 controllers connected via Gigabit Ethernet. These computers provide running IOCs for power supplies control, timing, beam diagnostics and interlocks. Also cPCI ADCs located in cPCI crate are used for beam diagnostics. Front-end electronics for vacuum control and interlocks are Allen-Bradley programmable logic controllers and I/O devices. Timing system is based on use of Micro-Research Finland Oy products: EVR 230RF and PMC EVR. Power supplies control use BNL developed set of a Power Supply Interface (PSI) which is located close to power supplies and a Power Supply Controller (PSC) which is connected to a front-end computer via 100 Mbit Ethernet. Each PSI is connected to its PSC via fiber-optic link. High Level Applications developed in Control System Studio and python run in Operator Consoles located in the Control Room. This paper describes the final design and status of the booster control system. The functional block diagrams are presented. | |||
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Poster MOPPC108 [0.458 MB] | ||
MOPPC120 | Commissioning Status of NSLS-II Vacuum Control System | controls, PLC, EPICS, linac | 389 |
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The National Synchrotron Light Source II (NSLS-II) is a state-of-the-art 3 GeV third generation light source currently under integrated testing and commissioning at Brookhaven National Laboratory. The vacuum systems are monitored by vacuum gauges and ion pump current. The gate valves are controlled by programmable logic controllers (PLC) using voting scheme. EPICS application codes provide the high level monitoring and control through the input-output controllers. This paper will discuss the commissioning status of the various aspects of vacuum control system. | |||
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Poster MOPPC120 [0.648 MB] | ||
MOPPC122 | EPICS Interface and Control of NSLS-II Residual Gas Analyzer System | controls, EPICS, interface, operation | 392 |
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Residual Gas Analyzers (RGAs) have been widely used in accelerator vacuum systems for monitoring and vacuum diagnostics. The National Synchrotron Light Source II (NSLS-II) vacuum system adopts Hiden RC-100 RGA which supports remote electronics, thus allowing real-time diagnostics with beam operation as well as data archiving and off-line analysis. This paper describes the interface and operation of these RGAs with the EPICS based control system. | |||
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Poster MOPPC122 [1.004 MB] | ||
TUPPC027 | Quality Management of CERN Vacuum Controls | controls, database, interface, framework | 608 |
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The vacuum controls team is in charge of the monitoring, maintenance & consolidation of the control systems of all accelerators and detectors in CERN; this represents 6 000 instruments distributed along 128 km of vacuum chambers, often of heterogeneous architectures. In order to improve the efficiency of the services we provide, to vacuum experts and to accelerator operators, a Quality Management Plan is being put into place. The first step was the gathering of old documents and the centralisation of information concerning architectures, procedures, equipment and settings. It was followed by the standardisation of the naming convention across different accelerators. The traceability of problems, request, repairs, and other actions, has also been put into place. It goes together with the effort on identification of each individual device by a coded label, and its registration in a central database. We are also working on ways to record, retrieve, process, and display the information across several linked repositories; then, the quality and efficiency of our services can only improve, and the corresponding performance indicators will be available. | |||
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Poster TUPPC027 [98.542 MB] | ||
TUCOCA09 | Klystron Measurement and Protection System for XFEL on the MTCA.4 Architecture | klystron, high-voltage, LLRF, FPGA | 937 |
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The European XFEL free-electron laser is under construction at the DESY. The driving engine of the superconducting accelerator will be 27 RF station. Each of an underground RF station consist from multi beam horizontal klystron which can provide up to 10MW of power at 1.3GHz. The XFEL should work continuously over 20 years with only 1 day per month for maintenance. In order to meet so demanding requirement lifetime of the MBK should be as long as possible. In the real operation the lifetime of tube can be thoroughly reduced by service conditions. To minimize the influence of service conditions to the klystrons lifetime the special fast protection system named as Klystron Lifetime Management System (KLM) has been developed, the main task of this system is to detect all events which can destroy the tube as quickly as possible, and then stop input power to the tube and send signal to stop HV pulse. The tube recovery procedure should depend on the kind of events has happened. KLM is based on the standard LLRF uTCA system for XFEL with additional DC channels. This article gives an overview of implementation of measurement and protection system installed at klystron test stand. | |||
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Slides TUCOCA09 [0.496 MB] | ||
THPPC050 | Upgrade System of Vacuum Monitoring of Synchrotron Radiation Sources of National Research Centre Kurchatov Institute | controls, synchrotron, operation, database | 1183 |
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Modernization project of the vacuum system of the synchrotron radiation source at the National Research Centre Kurchatov Institute (NRC KI) has been designed and implemented. It includes transition to the new high-voltage power sources for NMD and PVIG–0.25/630 pumps. The system is controlled via CAN-bus, and the vacuum is controlled by measuring pump currents in a range of 0.0001–10 mA. Status visualization, data collection and data storage is implemented on Sitect SCADA 7.2 Server and SCADA Historian Server. The system ensures a vacuum of 10–7 Pa. The efficiency and reliability of the vacuum system is increased by this work, making it possible to improve the main parameters of the SR source. | |||
THPPC071 | Machine Protection Diagnostics on a Rule Based System | diagnostics, DSL, hardware, software | 1235 |
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Since commissioning the high-brilliance, 3rd-generation light source, PETRA-3 in 2009 the accelerator operation has become routine. To guard the machine against damage a Machine Protection System (MPS) was built [*]. Alarms and beam information are collected by the MPS and can be used to analyse beam losses and dumps. The MPS triggers a visual diagnostic software, which is used to analyse the hardware dump cause. The diagnostic software is based on a Domain Specific Language (DSL) architecture. The MPS diagnostic application is designed with a server-client architecture and written in Java. The communication protocol is based on TINE. We characterise the data flow of the alarms and the DSL specification and describe the composition from the delivered structure to a single, human understandable message.
* T. Lensch, M. Werner, "Commissioning Results and Improvements of the Machine Protection System for PETRA III", BIW10, New Mexico, US, 2010 |
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Poster THPPC071 [0.838 MB] | ||
THPPC141 | Automatic Alignment Upgrade of Advanced Radiographic Capability for the National Ignition Facility | alignment, target, laser, operation | 1384 |
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Funding: This work was performed under the auspices of the Lawrence Livermore National Security, LLC, (LLNS) under Contract No. DE-AC52-07NA27344. #LLNL-ABS-632633 For many experiments planned on the National Ignition Facility (NIF), high-energy x-ray backlighters are an important diagnostic. NIF will be deploying this year a new Advanced Radiographic Capability (ARC) for generating these high-energy short-pulses. The precision of the Automatic Alignment (AA) for ARC is an important element in the success of the enhancement. A key aspect of the ARC AA is integration of the new alignment capabilities without disturbing the existing AA operations of NIF. Small pointing tolerances of 5 micron precision to a 10 micron target are required. After main amplification the beams are shortened by up to 1,000x in time in the ARC compressor vessel and aimed at backlighter targets in the NIF target chamber. Alignment Stability and Verification of the compressor gratings is critical to ensuring the ARC pulses meet their experimental specifications. |
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Poster THPPC141 [4.485 MB] | ||