Forced Two-Phase Cooling of the TPC Superconducting Solenoid
This paper describes the cryogenic tests of the TPC 2-meter-diameter superconducting solenoid on a 200 W refrigerator with gas-bearing turbines. The solenoid is cooled with two phase helium in forced flow around the superconducting winding. The two-phase helium was circulated using either the J-T circuit flow or a bellows type liquid helium pump. The particular problems associated with running a variable load on a gas-bearing turbine refrigerator are discussed.
KeywordsTotal Heat Helium Calorimetry Cond Refrigeration
Unable to display preview. Download preview PDF.
- 2.A. O. Dubois, et al., “PEP-4 Magnet, Basic Parameters of the Cryostat and Coil as Fabricated in 1983,” LBL Engineering Note M6018 (1983).Google Scholar
- 4.W. A. Burns et al., The construction and testing of a double acting bellows liquid helium pump, in “Proc. ICEC-8,” IPC Science and Technology Press, Guildford, England (1980) p. 383.Google Scholar