Cryogenic testing of the TPC superconducting solenoid

Technical Report · Wed Jun 01 00:00:00 EDT 1983

DOI:https://doi.org/10.2172/5556967· OSTI ID:5556967

Green, M A; Smits, R G; Taylor, J D; van Slyke, V; Barrera, F; Petersen, H; Rago, C E; Rinta, R I; Talaska, D; Watt, R D

This report describes the results of a series of tests on the TPC superconducting magnet cryogenic system which occurred during the winter and spring of 1983. The tests occurred at interaction region 2 of the PEP colliding beam facility at the Stanford Linear Accelerator Center (SLAC). The TPC Magnet Cryogenic System which was tested includes the following major components: a remote helium compressor with a full flow liquid nitrogen purification station, 400 meters of high pressure supply and low pressure return lines; and locally a CTi Model 2800 refrigerator with two Sulzer gas bearing turbines, the TPC magnet control dewar, 70 meters of transfer lines, and the TPC thin superconducting solenoid magnet. In addition, there is a conditioner (liquid nitrogen heat exchangers and gas heaters) system for cooldown and warmup of the magnet. This report describes the local cryogenic system and describes the various steps in the cooldown and operation of the TPC magnet. The tests were successful in that they showed that the TPC magnet could be cooled down in 24 hours and the magnet could be operated on the refrigerator or a helium pump with adequate cooling margin. The tests identified problems with the cryogenic system and the 2800 refrigerator. Procedures for successful operation and quenching of the superconducting magnet were developed. 19 references.

• Research Organization: Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); SLAC National Accelerator Lab., Menlo Park, CA (United States)
• DOE Contract Number: AC03-76SF00098; AC03-76SF00515
• OSTI ID: 5556967
• Report Number(s): LBL-16217; ON: DE84000528
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
DEWARS
PERFORMANCE TESTING
HELIUM DILUTION REFRIGERATORS
PEP STORAGE RINGS
SUPERCONDUCTING MAGNETS
CRYOGENICS
CALORIMETRY
COLLIDING BEAMS
OPERATION
QUENCHING
SOLENOIDS
TRANSIENTS
BEAMS
CONTAINERS
ELECTRIC COILS
ELECTRICAL EQUIPMENT
ELECTROMAGNETS
EQUIPMENT
MAGNETS
REFRIGERATORS
STORAGE RINGS
SUPERCONDUCTING DEVICES
TESTING
430303* - Particle Accelerators- Experimental Facilities & Equipment
420201 - Engineering- Cryogenic Equipment & Devices