The intergration of liquid and solid muon absorbers into afocusing magnet of a muon cooling channel

Conference · Thu May 01 04:00:00 EDT 2003

OSTI ID:918103

Green, M A; Black, E L; Cummings, M A; Kaplan, D M; Ishimoto, S; Cobb, J H; Lau, W; Yang, S; Palmer, R B

This report describes how one can integrate the muonabsorber with the focusing coils of a SFOFO muon cooling channel [1]. Theabsorber material must be a low Z material that reduces the muon momentumwith minimum scattering. The best materials to use for muon ionizationcooling absorbers are hydrogen, helium, lithium hydride, lithium, andberyllium. Hydrogen or helium in an absorber would normally be in theliquid state. Lithium hydride, lithium, and beryllium would normally bein the solid state. This report limits the absorber materials discussedto hydrogen, helium, lithium, and beryllium. In order to achieve the samelevel of ionization cooling with a solid absorber as a liquid hydrogenabsorber, the beta of the muon beam must be reduced more than a factor oftwo. This affects both the designs of the absorber and the magnet aroundit. Reducing the beam beta reduces the momentum acceptance of thechannel. Integration of a liquid hydrogen absorber and solid absorberswith a superconducting focusing solenoid is discussed. The choice ofabsorber material affects the design of the superconducting focusingmagnet and the superconductor that is used to generate the magneticfield.

• Research Organization: Ernest Orlando Lawrence Berkeley NationalLaboratory, Berkeley, CA (US)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC02-05CH11231
• OSTI ID: 918103
• Report Number(s): LBNL--52612; BnR: YN0100000
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ACCELERATORS
BERYLLIUM
FOCUSING
HELIUM
HYDROGEN
IONIZATION
LITHIUM
LITHIUM HYDRIDES
MAGNETIC FIELDS
MAGNETS
MUON BEAMS
MUONS
Muon Cooling
SCATTERING
SOLENOIDS
SUPERCONDUCTORS