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arXiv · 2012.10583

The Cryogenics and Xenon handling system for the PandaX-4T Experiment

Li Zhao·Xiangyi Cui·Wenbo Ma·Yingjie Fan·Karl Giboni·Tao Zhang·Jianglai Liu·Xiangdong Ji
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Abstract

PandaX-4T, the new generation of the PandaX detector, is a xenon dual-phase detector with about six tons of liquid xenon as target for dark matter search. A cryogenics and xenon handling system is designed to liquify and purify this large detector. In this paper, the results on the commission of the cryogenics and gas handling system are reported. The maximum cooling power of ~ 580 W at 178 K with three cooperating coldheads has been achieved. The filling rate with an assisted liquid nitrogen cooling can reach ~ 700 kg/day. The average rate of recuperation by liquid nitrogen is around 440 kg/day. The maximum total purification speed of two circulation loops is up to ~ 155 slpm. Each loop is using a large heat exchanger with a measured heat exchange efficiency of ~ 97.5+-0.5%.

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Li Zhao, Xiangyi Cui, Wenbo Ma, Yingjie Fan, Karl Giboni, Tao Zhang, Jianglai Liu, Xiangdong Ji. 2020-12-19. The Cryogenics and Xenon handling system for the PandaX-4T Experiment. https://doi.org/10.1088/1748-0221%2F16%2F06%2Ft06007

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