The adiabatic demagnetization refrigerator for the Micro-X sounding rocket telescope

P. Wikus*, J. S. Adams, Y. Bagdasarova, S. R. Bandler, W. B. Doriese, M. E. Eckart, E. Figueroa-Feliciano, R. L. Kelley, C. A. Kilbourne, S. W. Leman, D. McCammon, F. S. Porter, J. M. Rutherford, S. N. Trowbridge

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations

Abstract

The Micro-X Imaging X-ray Spectrometer is a sounding rocket payload slated for launch in 2011. An array of Transition Edge Sensors, which is operated at a bath temperature of 50 mK, will be used to obtain a high resolution spectrum of the Puppis-A supernova remnant. An Adiabatic Demagnetization Refrigerator (ADR) with a 75 gram Ferric Ammonium Alum (FAA) salt pill in the bore of a 4 T superconducting magnet provides a stable heat sink for the detector array only a few seconds after burnout of the rocket motors. This requires a cold stage design with very short thermal time constants. A suspension made from Kevlar strings holds the 255 gram cold stage in place. It is capable of withstanding loads in excess of 200 g. Stable operation of the TES array in proximity to the ADR magnet is ensured by a three-stage magnetic shielding system which consists of a superconducting can, a high-permeability shield and a bucking coil. The development and testing of the Micro-X payload is well underway.

Original languageEnglish (US)
Title of host publicationAdvances in Cryogenic Engineering - Transactions of the Cryogenic Engineering Conference-CEC
Pages633-640
Number of pages8
DOIs
StatePublished - 2010
Event2009 Joint Cryogenic Engineering and International Cryogenic Materials Conferences - Tucson, AZ, United States
Duration: Jun 28 2009Jul 2 2009

Publication series

NameAIP Conference Proceedings
Volume1218
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Other

Other2009 Joint Cryogenic Engineering and International Cryogenic Materials Conferences
CountryUnited States
CityTucson, AZ
Period6/28/097/2/09

Keywords

  • Adiabatic demagnetization refrigerator
  • Kevlar suspension systems
  • Low temperature detectors
  • Magnetic shielding
  • Space cryogenics

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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