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Proceedings Paper

Open Cycle 3He Cooling To 0.18 K For Space Operation
Author(s): D. Frank; T. C. Nast
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Paper Abstract

Many space instruments will require very low cryogenic temperatures to perform satisfactorily. The performance of bolometers greatly increases at very low temperatures and instruments for telescopes such as SIRTF will require a cooler to provide -50 μW total cooling power at temperatures of 0.1 to 0.3 K. With advances in cryogenic technology and satellite lifetime, the cryogen system design lifetimes are becoming much longer. This paper discusses a long life open-cycle 3He cooler that provides low cooling (50 μW) to a temperature as low as 0.18 K by continuous evaporation of liquid 3He and loss of vapor through a vent tube.

Paper Details

Date Published: 1 February 1985
PDF: 6 pages
Proc. SPIE 0509, Cryogenic Optical Systems and Instruments I, (1 February 1985); doi: 10.1117/12.944998
Show Author Affiliations
D. Frank, Lockheed Palo Alto Research Laboratories (United States)
T. C. Nast, Lockheed Palo Alto Research Laboratories (United States)

Published in SPIE Proceedings Vol. 0509:
Cryogenic Optical Systems and Instruments I
Ramsey K. Melugin, Editor(s)

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