Joule-Thomson cryogenic cooler with extremely high thermal stability

Details Joule-Thomson cryogenic cooler with extremely high thermal stability Joule-Thomson cryogenic cooler with extremely high thermal stability

Jun 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991thph.confx....b&link_type=abstract

AIAA, Thermophysics Conference, 26th, Honolulu, HI, June 24-26, 1991. 9 p.

Physics

Cryogenic Cooling, Infrared Lasers, Laser Spectrometers, Thermal Stability, Cassini Mission, Satellite Atmospheres, Semiconductor Lasers, Temperature Control, Tunable Lasers

Scientific paper

An 80-K Joule-Thomson (J-T) cooling system designed for the Probe Infrared Laser Spectrometer (PIRLS) proposed for the Huygens Titan Probe of the Cassini Saturn orbiter mission is presented. The cryogenic cooling requirements of the PIRLS instrument are listed, and the cooler system design including details of a J-T cryostat, cold head, and dewar design is described along with the results of a thermal modeling effort and lab cooler performance testing. It is shown that by using active feedback temperature control of the cold head in combination with the self-regulating action of the J-T cryostat, a temperature stability of less than 0.1 mK/min is achieved by the cooler weighting 1.8 kg.

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