Progress on the MICE Liquid Absorber Cooling and CryogenicDistribution System

Conference · Fri May 13 04:00:00 EDT 2005

OSTI ID:918560

Green, M A; Baynham, E; Bradshaw, T; Drumm, P; Ivanyushenkov, Y; Ishimoto, S; Cummings, M A.C.; Lau, W W; Yang, S Q

This report describes the progress made on the design of the cryogenic cooling system for the liquid absorber for the international Muon Ionization Cooling Experiment (MICE). The absorber consists of a 20.7-liter vessel that contains liquid hydrogen (1.48 kg at 20.3 K) or liquid helium (2.59 kg at 4.2 K). The liquid cryogen vessel is located within the warm bore of the focusing magnet for the MICE. The purpose of the magnet is to provide a low beam beta region within the absorber. For safety reasons, the vacuum vessel for the hydrogen absorber is separated from the vacuum vessel for the superconducting magnet and the vacuum that surrounds the RF cavities or the detector. The absorber thin windows separate the liquid in the absorber from the absorber vacuum. The absorber vacuum vessel also has thin windows that separate the absorber vacuum space from adjacent vacuum spaces. Because the muon beam in MICE is of low intensity, there is no beam heating in the absorber. The absorber can use a single 4 K cooler to cool either liquid helium or liquid hydrogen within the absorber.

• Research Organization: Ernest Orlando Lawrence Berkeley NationalLaboratory, Berkeley, CA (US)
• Sponsoring Organization: USDOE. Office of the Chief Financial Officer. Other Costsand Credits
• DOE Contract Number: AC02-05CH11231
• OSTI ID: 918560
• Report Number(s): LBNL--57692; BnR: YN0100000
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ACCELERATORS
COOLING SYSTEMS
CRYOGENIC FLUIDS
HEAT EXCHANGERS
HYDROGEN
MICE
MUON BEAMS
SUPERCONDUCTING MAGNETS