An 800 mK helium sorption cooler for the HUBS mission

Xiaotong Xi; Biao Yang; Zhaozhao Gao; Liubiao Chen; Junjie Wang

doi:10.1117/12.2629770

31 August 2022 An 800 mK helium sorption cooler for the HUBS mission

Xiaotong Xi, Biao Yang, Zhaozhao Gao, Liubiao Chen, Junjie Wang

Proceedings Volume 12181, Space Telescopes and Instrumentation 2022: Ultraviolet to Gamma Ray; 121816N (2022) https://doi.org/10.1117/12.2629770
Event: SPIE Astronomical Telescopes + Instrumentation, 2022, Montréal, Québec, Canada

Abstract

The refrigeration system of the Hot Universe Baryon Surveyor (HUBS) mission intends to use the FAA paramagnetic salt adiabatic demagnetization refrigerator (ADR) to obtain temperatures below 100 mK. In order to obtain the 1 K pre-cooling temperature required by the FAA stage, one option is to use a GGG paramagnetic salt ADR, and the other option is to use a helium sorption cooler. A helium sorption cooler and the corresponding helium gas gap heat switch have been developed, and a cooling temperature of 800 mK has been obtained. This paper gives a detailed introduction to the prototype's structure, cooling performance, existing problems, and the next optimization measures.

Citation Download Citation

Xiaotong Xi, Biao Yang, Zhaozhao Gao, Liubiao Chen, and Junjie Wang "An 800 mK helium sorption cooler for the HUBS mission", Proc. SPIE 12181, Space Telescopes and Instrumentation 2022: Ultraviolet to Gamma Ray, 121816N (31 August 2022); https://doi.org/10.1117/12.2629770

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KEYWORDS

Helium

Carbon

Liquids

Switches

Cryocoolers

Temperature metrology

Aerospace engineering

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