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Proceedings Paper

Thermal architecture for the SPIDER flight cryostat
Author(s): J. E. Gudmundsson; P. A. R. Ade; M. Amiri; S. J. Benton; R. Bihary; J. J. Bock; J. R. Bond; J. A. Bonetti; S. A. Bryan; B. Burger; H. C. Chiang; C. R. Contaldi; B. P. Crill; O. Doré; M. Farhang; J. Filippini; L. M. Fissel; N. N. Gandilo; S. R. Golwala; M. Halpern; M. Hasselfield; G. Hilton; W. Holmes; V. V. Hristov; K. D. Irwin; W. C. Jones; C. L. Kuo; C. J. MacTavish; P. V. Mason; T. E. Montroy; T. A. Morford; C. B. Netterfield; D. T. O'Dea; A. S. Rahlin; C. D. Reintsema; J. E. Ruhl; M. C. Runyan; M. A. Schenker; J. A. Shariff; J. D. Soler; A. Trangsrud; C. Tucker; R. S. Tucker; A. D. Turner
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Paper Abstract

We describe the cryogenic system for SPIDER, a balloon-borne microwave polarimeter that will map 8% of the sky with degree-scale angular resolution. The system consists of a 1284 L liquid helium cryostat and a 16 L capillary-filled superfluid helium tank, which provide base operating temperatures of 4 K and 1.5 K, respectively. Closed-cycle 3He adsorption refrigerators supply sub-Kelvin cooling power to multiple focal planes, which are housed in monochromatic telescope inserts. The main helium tank is suspended inside the vacuum vessel with thermally insulating fiberglass flexures, and shielded from thermal radiation by a combination of two vapor cooled shields and multi-layer insulation. This system allows for an extremely low instrumental background and a hold time in excess of 25 days. The total mass of the cryogenic system, including cryogens, is approximately 1000 kg. This enables conventional long duration balloon flights. We will discuss the design, thermal analysis, and qualification of the cryogenic system.

Paper Details

Date Published: 15 July 2010
PDF: 11 pages
Proc. SPIE 7741, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy V, 77411M (15 July 2010); doi: 10.1117/12.857925
Show Author Affiliations
J. E. Gudmundsson, Princeton Univ. (United States)
P. A. R. Ade, Cardiff Univ. (United Kingdom)
M. Amiri, The Univ. of British Columbia (Canada)
S. J. Benton, Univ. of Toronto (Canada)
R. Bihary, Case Western Reserve Univ. (United States)
J. J. Bock, Jet Propulsion Lab. (United States)
California Institute of Technology (United States)
J. R. Bond, Univ. of Toronto (Canada)
J. A. Bonetti, Jet Propulsion Lab. (United States)
S. A. Bryan, Case Western Reserve Univ. (United States)
B. Burger, The Univ. of British Columbia (Canada)
H. C. Chiang, Princeton Univ. (United States)
C. R. Contaldi, Imperial College London (United Kingdom)
B. P. Crill, Jet Propulsion Lab. (United States)
California Institute of Technology (United States)
O. Doré, Jet Propulsion Lab. (United States)
California Institute of Technology (United States)
M. Farhang, Univ. of Toronto (Canada)
J. Filippini, California Institute of Technology (United States)
L. M. Fissel, Univ. of Toronto (Canada)
N. N. Gandilo, Univ. of Toronto (Canada)
S. R. Golwala, California Institute of Technology (United States)
M. Halpern, The Univ. of British Columbia (Canada)
M. Hasselfield, The Univ. of British Columbia (Canada)
G. Hilton, National Institute of Standards and Technology (United States)
W. Holmes, Jet Propulsion Lab. (United States)
V. V. Hristov, California Institute of Technology (United States)
K. D. Irwin, National Institute of Standards and Technology (United States)
W. C. Jones, Princeton Univ. (United States)
C. L. Kuo, Stanford Univ. (United States)
C. J. MacTavish, Univ. of Cambridge (United Kingdom)
P. V. Mason, California Institute of Technology (United States)
T. E. Montroy, Case Western Reserve Univ. (Canada)
T. A. Morford, California Institute of Technology (United States)
C. B. Netterfield, Univ. of Toronto (Canada)
D. T. O'Dea, Imperial College London (United Kingdom)
A. S. Rahlin, Princeton Univ. (United States)
C. D. Reintsema, National Institute of Standards and Technology (United States)
J. E. Ruhl, Case Western Reserve Univ. (Canada)
M. C. Runyan, California Institute of Technology (United States)
M. A. Schenker, California Institute of Technology (United States)
J. A. Shariff, Univ. of Toronto (Canada)
J. D. Soler, Univ. of Toronto (Canada)
A. Trangsrud, California Institute of Technology (United States)
C. Tucker, Cardiff Univ. (United Kingdom)
R. S. Tucker, California Institute of Technology (United States)
A. D. Turner, Jet Propulsion Lab. (United States)


Published in SPIE Proceedings Vol. 7741:
Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy V
Wayne S. Holland; Jonas Zmuidzinas, Editor(s)

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