Performance improvement of Adiabatic Demagnetization Refrigerator for HUBS

Chunyang Jiang; Hai Jin; Wei Cui

doi:10.1117/12.3019596

21 August 2024 Performance improvement of Adiabatic Demagnetization Refrigerator for HUBS

Chunyang Jiang, Hai Jin, Wei Cui

Proceedings Volume 13093, Space Telescopes and Instrumentation 2024: Ultraviolet to Gamma Ray; 130936K (2024) https://doi.org/10.1117/12.3019596
Event: SPIE Astronomical Telescopes + Instrumentation, 2024, Yokohama, Japan

Conference Poster

Abstract

The Hot Universe Baryon Surveyor (HUBS) is a proposed X-ray satellite project dedicated to addressing the “missing baryon problem”. Its payload incorporates transition-edge sensor (TES) microcalorimeters operating at sub-100 mK, making adiabatic demagnetization refrigerator (ADR) a key technology for the HUBS mission. Currently, we are in the process of improving the performance of a two-stage ADR prototype, mainly to increase the hold time at the operating temperature. We replace the previous chromium potassium alum (CPA) salt pill with a new ferric ammonium alum (FAA) salt pill containing more moles of crystals, as FAA has more cooling capacity than CPA per mole in the temperature range of interest. In this paper, we describe the performance improvement of the ADR prototype and present the test results.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Chunyang Jiang, Hai Jin, and Wei Cui "Performance improvement of Adiabatic Demagnetization Refrigerator for HUBS", Proc. SPIE 13093, Space Telescopes and Instrumentation 2024: Ultraviolet to Gamma Ray, 130936K (21 August 2024); https://doi.org/10.1117/12.3019596

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