Cryogenics of the CRISTA/SPAS experiment aboard the Space Shuttle

Details Cryogenics of the CRISTA/SPAS experiment aboard the Space Shuttle Cryogenics of the CRISTA/SPAS experiment aboard the Space Shuttle

Sep 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990cryo...30..475t&link_type=abstract

(International Cryogenic Engineering Committee, International Institute of Refrigeration, Chinese Association of Refrigeration,

Physics

Cryogenic Equipment, Infrared Spectrometers, Infrared Telescopes, Space Shuttle Payloads, Spaceborne Experiments, Atmospheric Circulation, Cryostats, Middle Atmosphere, Thermal Analysis

Scientific paper

In 1993, the Space Shuttle will launch the Cryogenic IR Spectrometers and Telescopes for the Atmosphere, 'CRISTA' experiment, which is to analyze middle-atmosphere dynamical processes over the course of a 9-day mission. CRISTA's high sensitivity will be achieved via telescope and spectrometer cooling to below 15 K by supercritical He. A cryostat design with two He tanks was chosen; the main He tank contains 725 l of supercritical He at 5-10 K and is dedicated to the telescopes and spectrometers, while a secondary tank containing 55 l of subcooled He at 2.5-4.0 K is devoted to cooling for far-IR detectors.

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