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Design and Commissioning of the PandaX-4T Cryogenic Distillation System for Krypton and Radon Removal

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arxiv 2012.02436 v5 pith:6JQRWLAM submitted 2020-12-04 physics.ins-det hep-ex

Xiangyi Cui , Zhou Wang , Yonglin Ju , Xiuli Wang , Huaxuan Liu , Wenbo Ma , Jianglai Liu , Li Zhao
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Xiangdong Ji Shuaijie Li Rui Yan Haidong Sha Peiyao Huang
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classification physics.ins-dethep-ex
keywords kryptonradonxenonsystempandax-4tcommissioningcontentcryogenic
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An online cryogenic distillation system for the removal of krypton and radon from xenon was designed and constructed for PandaX-4T, a highly sensitive dark matter detection experiment. The krypton content in a commercial xenon product is expected to be reduced by 7 orders of magnitude with 99% xenon collection efficiency at a flow rate of 10 kg/h by design. The same system can reduce radon content in xenon by reversed operation, with an expected radon reduction factor of about 1.8 in PandaX-4T under a flow rate of 56.5 kg/h. The commissioning of this system was completed, with krypton and radon operations tested under respective working conditions. The krypton concentration of the product xenon was measured with an upper limit of 8.0 ppt.

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Cited by 2 Pith papers

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  1. Precise Measurement of $^{216}$Po Half-life with Exact Parent-daughter Pairing in PandaX-4T

    nucl-ex 2025-07 conditional novelty 5.0 of 10

    Using exact space-time pairing of 220Rn-216Po decays in PandaX-4T, the 216Po half-life is measured to be 143.7±0.5(stat)±0.2(syst) ms.

  2. Measurement of two-neutrino double electron capture half-life of $^{124}$Xe with PandaX-4T

    nucl-ex 2024-11 conditional novelty 5.0 of 10

    PandaX-4T measured the 124Xe two-neutrino double electron capture half-life as (1.03±0.15_stat±0.08_sys)×10^22 years and a K-shell capture fraction of (65±5)% from 1.73 tonne-years of exposure.

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