Dr. Xiaotong Xiao Profile

Dr. Xiaotong Xiao

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Proceedings Article | 13 December 2020 Poster + Paper

Preliminary architecture of integrated cooling system for the HUBS mission

L. B. Chen, Y. J. Liu, H. Jin, X. T. Xiao, J. Quan, W. Cui, J. T. Liang, J. J. Wang

Proceedings Volume 11444, 114449I (2020) https://doi.org/10.1117/12.2562156

KEYWORDS: Cooling systems, Cryocoolers, Sensors, Earth observing sensors, Satellites, Space operations

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Transition Edge Sensor (TES) is a key component for Hot Universe Baryon Survey (HUBS), which is proposed in China to address the so-called “missing baryon problem”. A stable heat sink below 100 mK is needed for the detector’s noise suppression and high resolution. Since HUBS is a satellite based observation mission, a complicated cooling system suitable for space application becomes an important supporting sub-system. A compounded cooling system, including a mechanical cryocooler and an adiabatic magnetization refrigerator (ADR), has been proposed for HUBS. The mechanical cryocooler is used as the pre-cooling 4 K stage, and the ADR is responsible for further reducing the temperature to below 100 mK. High-frequency pulse tube cryocooler (HPTC) and HPTC combined with Joule Thompson cooler (J-T) are two candidates for the mechanical pre-cooling stage, both of which are currently under development. The ADR is being designed and processed. In this paper, we will present the preliminary architecture of the HUBS cooling system, as well as the latest states of HPTC, J-T, and ADR.

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