Design and construction of a cryogenic distillation device for removal of krypton for liquid xenon dark matter detectors.
Design and construction of a cryogenic distillation device for removal of krypton for liquid xenon dark matter detectors.
复制标题
设计和建造用于液态氙暗物质探测器去除氪的低温蒸馏装置。
DOI：
10.1063/1.4861537
复制
发表时间：
2014
期刊：
影响因子：
--
通讯作者：
Y. Ju
中科院分区：
文献类型：
--
作者：
Zhou Wang;L. Bao;X. Hao;Y. Ju
液态氙是暗物质探测的理想探测介质之一。然而，在工业氙气产品中，放射性氪-85（85）Kr的含量一直很低。为了满足高灵敏度、低本底的暗物质实验要求，专门设计、开发和建造了一套从商用氙产品中去除氪（Kr）的高效低温蒸馏系统。常规商用氙气产品中的氪含量可从10（-9）降至10（-12），在最大流量为5 kg/h（15 SLPM）时，氙气收集效率可达99%。该蒸馏系统产生的净化氙气可作为我国首个暗物质探测器熊猫X项目的探测介质。
Liquid xenon (Xe) is one of the commendable detecting media for the dark matter detections. However, the small content of radioactive krypton-85 ((85)Kr) 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.