Liquid xenon (Xe) is one of the commendable detecting media for the dark matter detections. However, the small content of radioactive krypton-85 (85Kr) always exists in the commercial xenon products. An efficient cryogenic distillation system to remove this krypton (Kr) from commercial xenon products has been specifically designed, developed, and constructed in order to meet the requirements of the dark matter experiments with high- sensitivity and low-background. The content of krypton in regular commercial xenon products can be reduced from 10−9 to 10−12, with 99% xenon collection efficiency at maximum flow rate of 5 kg/h (15SLPM). The purified xenon gases produced by this distillation system can be used as the detecting media in the project of Panda X, which is the first dark matter detector developed in China.
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January 2014
Research Article|
January 24 2014
Design and construction of a cryogenic distillation device for removal of krypton for liquid xenon dark matter detectors
Zhou Wang;
Zhou Wang
Institute of Refrigeration and Cryogenics,
Shanghai Jiao Tong University
, Shanghai 200240, China
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Lei Bao;
Lei Bao
Institute of Refrigeration and Cryogenics,
Shanghai Jiao Tong University
, Shanghai 200240, China
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Xihuan Hao;
Xihuan Hao
Institute of Refrigeration and Cryogenics,
Shanghai Jiao Tong University
, Shanghai 200240, China
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Yonglin Ju
Yonglin Ju
a)
Institute of Refrigeration and Cryogenics,
Shanghai Jiao Tong University
, Shanghai 200240, China
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a)
Author to whom correspondence should be addressed. Electronic mail: [email protected]. Tel. /Fax: +86 21 34206532.
Rev. Sci. Instrum. 85, 015116 (2014)
Article history
Received:
May 08 2013
Accepted:
December 25 2013
Citation
Zhou Wang, Lei Bao, Xihuan Hao, Yonglin Ju; Design and construction of a cryogenic distillation device for removal of krypton for liquid xenon dark matter detectors. Rev. Sci. Instrum. 1 January 2014; 85 (1): 015116. https://doi.org/10.1063/1.4861537
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