Joule-Thomson cryogenic cooler with extremely high thermal stabilityAn 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.
Document ID
19910058863
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Bard, Steven (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Wu, J. J. (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)