Large scale xenon purification using cryogenic distillation for dark matter detectors

被引：11
|
作者：
Wang, Z. [1 ]
Bao, L. [1 ]
Hao, X. H. [1 ]
Ju, Y. L. [1 ]
Pushkin, K. [2 ,3 ,4 ]
He, M. [2 ,3 ]
机构：
[1] Shanghai Jiao Tong Univ, Inst Refrigerat & Cryogen, Shanghai 200240, Peoples R China
[2] Shanghai Jiao Tong Univ, Inst Nucl & Particle Phys Astron & Cosmol INPAC, Shanghai 200240, Peoples R China
[3] Shanghai Jiao Tong Univ, Dept Phys & Astron, Shanghai 200240, Peoples R China
[4] Univ Michigan, Dept Phys, Ann Arbor, MI 48109 USA
来源：
JOURNAL OF INSTRUMENTATION | 2014年 / 9卷
关键词：
Cryogenics; Data Handling; Particle detectors; LIQUID XENON; PERFORMANCE; KR-85;
D O I：
10.1088/1748-0221/9/11/P11024
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
A high efficiency cryogenic distillation system for removal of radioactive krypton-85 (Kr-85) from commercially available xenon (Xe) has been designed, developed and assessed to meet the requirements of high sensitivity, low background dark matter detection experiments. The concentration of krypton (Kr) in a commercial xenon product can be decreased from 10(-9) to 10(-12) mol/mol based on the theoretical design and simulation. The experimental measurements showed that the concentration of krypton was decreased to 10(-11) mol/mol with 99% xenon collection efficiency at maximum flow rate of 5 kg/h. Over 500 kg of xenon has been purified using this system, which has been used as the detection medium in project Panda X, the first dark matter detector developed in China.
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收藏
页数：15
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