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self-driven cooling loop for a large superconducting magnet in spacePressurized cooling loops in which superfluid helium circulation is driven by the heat being removed have been previously demonstrated in laboratory tests. A simpler and lighter version which eliminates a heat exchanger by mixing the returning fluid directly with the superfluid helium bath was analyzed. A carefully designed flow restriction must be used to prevent boiling in this low-pressure system. A candidate design for Astromag is shown that can keep the magnet below 2.0 K during magnet charging. This gives a greater margin against accidental quench than approaches that allow the coolant to warm above the lambda point. A detailed analysis of one candidate design is presented.
Document ID
19920041224
Document Type
Reprint (Version printed in journal)
Authors
Mord, A. J.
(Ball Aerospace Systems Group, Ball Electro-Optics/Cryogenics Div., Boulder CO, United States)
Snyder, H. A.
(Colorado, University Boulder, United States)
Date Acquired
August 15, 2013
Publication Date
January 1, 1992
Publication Information
Publication: Cryogenics
Volume: 32
Issue: 2 19
ISSN: 0011-2275
Subject Category
ENGINEERING (GENERAL)
Funding Number(s)
CONTRACT_GRANT: NAGW-1388
Distribution Limits
Public
Copyright
Other