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The XRS Low Temperature Cryogenic System: Ground Performance Test ResultsThe X-Ray Spectrometer (XRS) instrument is part of the Astro-E mission scheduled to launch early in 2000. Its cryogenic system is required to cool a 32-element square array of x-ray microcalorimeters to 60-65 mK over a mission lifetime of at least 2 years. This is accomplished using an adiabatic demagnetization refrigerator (ADR) contained within a two-stage superfluid helium/solid neon cooler. Goddard Space Flight Center is providing the ADR and helium dewar. The flight system was assembled in Sept. 1997 and subjected to extensive thermal performance tests. This paper presents test results at both the system and component levels. In addition, results of the low temperature topoff performed in Japan with the engineering unit neon and helium dewars are discussed.
Document ID
19990107383
Acquisition Source
Goddard Space Flight Center
Document Type
Reprint (Version printed in journal)
Authors
Breon, Susan (NASA Goddard Space Flight Center Greenbelt, MD United States)
Sirron, Peter (NASA Goddard Space Flight Center Greenbelt, MD United States)
Boyle, Robert (NASA Goddard Space Flight Center Greenbelt, MD United States)
Canavan, Ed (NASA Goddard Space Flight Center Greenbelt, MD United States)
DiPirro, Michael (NASA Goddard Space Flight Center Greenbelt, MD United States)
Serlemitsos, Aristides (NASA Goddard Space Flight Center Greenbelt, MD United States)
Tuttle, James (NASA Goddard Space Flight Center Greenbelt, MD United States)
Whitehouse, Paul (NASA Goddard Space Flight Center Greenbelt, MD United States)
Date Acquired
August 19, 2013
Publication Date
January 1, 1998
Subject Category
Instrumentation And Photography
Meeting Information
Meeting: 1998 Space Cryogenics
Location: Noordwijk
Country: Netherlands
Start Date: July 20, 1998
End Date: July 21, 1998
Distribution Limits
Public
Copyright
Other

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