CRYOGENIC CONTROLS FOR FERMILAB'S SRF CAVITIES AND TEST FACILITY
- Fermi National Accelerator Laboratory Batavia, IL, 60510 (United States)
A new superconducting radio frequency (SRF) cavities test facility is now operational at Fermilab's Meson Detector Building (MDB). The Cryogenic Test Facility (CTF), located in a separate building 500 m away, supplies the facility with cryogens. The design incorporates ambient temperature pumping for superfluid helium production, as well as three 0.6 kW at 4.5 K refrigerators, five screw compressors, a helium purifier, helium and nitrogen inventory, cryogenic distribution system, and a variety of test cryostats.To control and monitor the vastly distributed cryogenic system, a flexible scheme has been developed. Both commercial and experimental physics tools are used. APACS+, a process automation control system from Siemens-Moore, is at the heart of the design. APACS+ allows engineers to configure an ever evolving test facility while maintaining control over the plant and distribution system. APACS+ nodes at CTF and MDB are coupled by a fiber optic network. DirectLogic205 PLCs by KOYO are used as the field level interface to most I/O.The top layer of this system uses EPICS (Experimental Physics and Industrial Control System) as a SCADA/HMI. Utilities for graphical display, control loop setting, real time/historical plotting and alarming have been implemented by using the world-wide library of applications for EPICS.OPC client/server technology is used to bridge across each different platform.This paper presents this design and its successful implementation.
- OSTI ID:
- 21136884
- Journal Information:
- AIP Conference Proceedings, Vol. 985, Issue 1; Conference: Cryogenic Engineering Conference - CEC: Advances in cryogenic engineering, Chattanooga, TN (United States), 16-20 Jul 2007; Other Information: DOI: 10.1063/1.2908699; (c) 2008 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
- Country of Publication:
- United States
- Language:
- English
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