Adiabatic Demagnetization Cooler For Far Infrared Detector

Akio Sato; Takashi Yazawa; Junya Yamamoto

doi:10.1117/12.978413

18 November 1988 Adiabatic Demagnetization Cooler For Far Infrared Detector

Akio Sato, Takashi Yazawa, Junya Yamamoto

Proceedings Volume 1039, 13th Intl Conf on Infrared and Millimeter Waves; (1988) https://doi.org/10.1117/12.978413
Event: 13th International Conference on Infrared and Millimeter Waves, 1987, Honolulu, HI, United States

Abstract

An small adiabatic demagnetization cooler for an astronomical far infrared detector has been built. Single crystals of manganese ammonium sulphate and chromium potassium alum, were prepared as magnetic substances. The superconducting magnet was indirectly cooled and operated by small current up to 13.3 A, the maximum field being 3.5 T. As a preliminary step, adiabatic demagnetization to zero field was implemented. The lowest temperature obtained was 0.5 K, for 5.0 K initial temperature.

Citation Download Citation

Akio Sato, Takashi Yazawa, and Junya Yamamoto "Adiabatic Demagnetization Cooler For Far Infrared Detector", Proc. SPIE 1039, 13th Intl Conf on Infrared and Millimeter Waves, (18 November 1988); https://doi.org/10.1117/12.978413

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