Magnetic shielding for a spaceborne adiabatic demagnetization refrigerator (ADR)The Goddard Space Flight Center has studied magnetic shielding for an adiabatic demagnetization refrigerator. Four types of shielding were studied: active coils, passive ferromagnetic shells, passive superconducting coils, and passive superconducting shells. The passive superconducting shells failed by allowing flux penetration. The other three methods were successful, singly or together. Experimental studies of passive ferromagnetic shielding are compared with calculations made using the Poisson Group of programs, distributed by the Los Alamos Accelerator Code Group of the Los Alamos National Laboratory. Agreement between calculation and experiment is good. The ferromagnetic material is a silicon iron alloy.
Document ID
19930064612
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Warner, Brent A. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Shirron, Peter J. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Castles, Stephen H. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Serlemitsos, Aristides T. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
August 16, 2013
Publication Date
January 1, 1991
Publication Information
Publication: In: Advances in cryogenic engineering. Vol. 37B - Proceedings of the 1991 Cryogenic Engineering Conference, Univ. of Alabama, Huntsville, June 11-14, 1991 (A93-48578 20-37)
Publisher: Plenum Press
Subject Category
Engineering (General)
Accession Number
93A48609
Distribution Limits
Public
Copyright
Other
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Related Records
IDRelationTitle19930064581Collected WorksAdvances in cryogenic engineering. Vols. 37A & 37B - Proceedings of the 1991 Cryogenic Engineering Conference, Univ. of Alabama, Huntsville, June 11-14, 1991