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Design and flight performance of a space borne 3He refrigerator for the infrared telescope in space

✍ Scribed by M.M Freund; L Duband; A.E Lange; T Matsumoto; H Murakami; T Hirao; S Sato

Publisher: Elsevier Science
Year: 1998
Tongue: English
Weight: 397 KB
Volume: 38
Category: Article
ISSN: 0011-2275
DOI: 10.1016/s0011-2275(97)00173-2

No coin nor oath required. For personal study only.

✦ Synopsis

We report the design, space-qualification and flight performance of a 3 He refrigerator that has achieved the first sub-Kelvin temperatures in orbit. The refrigerator has been used to cool the bolometric detectors of the Far Infrared Photometer (FIRP) on the Infrared Telescope in Space (IRTS). The refrigerator has no moving parts, and can be re-cycled indefinitely in zero-g with Ͼ 95% duty cycle using simple control electronics. It provides 10 W of cooling power at T Ͻ 310 mK with Յ 2 mW average power dissipation to a 2.0 K heat sink for about 10 days.

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