Paper |
Title |
Page |
MOPPC026 |
Bake-out Mobile Controls for Large Vacuum Systems |
119 |
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- S. Blanchard, F. Bellorini, P. Gomes, H.F. Pereira
CERN, Geneva, Switzerland
- L. Kopylov, S. Merker, M.S. Mikheev
IHEP, Moscow Region, Russia
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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]
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MOPPC030 |
Developments on the SCADA of CERN Accelerators Vacuum |
135 |
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- F. Antoniotti, S. Blanchard, M. Boccioli, P. Gomes, H.F. Pereira
CERN, Geneva, Switzerland
- L. Kopylov, S. Merker, M.S. Mikheev
IHEP, Moscow Region, Russia
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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]
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TUPPC027 |
Quality Management of CERN Vacuum Controls |
608 |
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- F. Antoniotti, J-P. Boivin, E. Fortescue-Beck, J. Gama, P. Gomes, P. Le Roux, H.F. Pereira, G. Pigny
CERN, Geneva, Switzerland
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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]
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