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Abstracts |
W.H. Strong, P.A. Gurd (ORNL), J.D. Creel, B. Bevins (JLab)
The cryogenic system for the Spallation Neutron Source (SNS) is designed by Jefferson Laboratory (JLab) personnel and is based on the existing JLab facility. Our task is to use the JLab control system design as much as practical while remaining consistent with the SNS control system standards. Some aspects of the systems are very similar, including equipment to be controlled, the need for PID loops and automatic sequences, and the use of EPICS. There are differences in device naming, system hardware, and software tools. SNS devices must conform to the SNS device naming standard. The SNS system uses newer technology. The JLab system uses VME and CAMAC devices, while the SNS control system includes VME and VXI devices and PLCs. Some devices require new solutions. There is no VME equivalent of the CAMAC liquid helium level monitor. The JLab database was defined using Capfast, while the SNS Control System requires integration into an Oracle-based Grand Unified Relational Database. JLab uses MEDM for its screens, while SNS has adopted EDM. The cryogenic system is the first SNS system to be developed using parts of the standards. This paper will report on our experiences in integrating the new and the old.
{*} Work supported by the US Department of Energy under contract DE-AC05-00OR22725
eCONF
C011127
ePROCEEDINGS
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SUMMARY
ICALEPCS 2001
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