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Design concepts for the ASTROMAG cryogenic systemDescribed is a proposed cryogenic system used to cool the superconducting magnet for the Space Station based ASTROMAG Particle Astrophysics Facility. This 2-meter diameter superconducting magnet will be cooled using stored helium II. The paper presents a liquid helium storage concept which would permit cryogenic lifetimes of up to 3 years between refills. It is proposed that the superconducting coil be cooled using superfluid helium pumped by the thermomechanical effect. It is also proposed that the storage tank be resupplied with helium in orbit. A method for charging and discharging the magnet with minimum helium loss using split gas-cooled leads is discussed. A proposal to use a Stirling cycle cryocooler to extend the storage life of the cryostat will also be presented.
Document ID
19880065971
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Green, M. A. (California, University Berkeley, United States)
Castles, S. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
August 13, 2013
Publication Date
January 1, 1988
Subject Category
Engineering (General)
Meeting Information
Meeting: Advances in cryogenic engineering.
Location: Saint Charles, IL
Country: United States
Start Date: June 14, 1987
End Date: June 18, 1987
Accession Number
88A53198
Funding Number(s)
CONTRACT_GRANT: DE-AC03-76SF-00098
Distribution Limits
Public
Copyright
Other

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