Preliminary Test Results of LAr Prototype Detector

分类： 物理学 >> 核物理学 提交时间： 2016-08-30

Li Pei-Xian Guan Meng-Yun Yang Chang-Gen Zhang Peng Liu Jin-Chang Zhang Yong-Peng Guo Cong Wang Yi

摘要： WIMPs are a well-motivated galactic dark matter candidate. Liquid argon (LAr) is an attractive target for the direct detection of WIMPs. The LAr prototype detector is designed to study the technology and property of LAr detector. The prototype detector have an active volume containing 0.65 kg of liquid argon. The liquid nitrogen(LN) cooling system allows the temperature of liquid argon to be maintained at the boiling point (87.8 K) with fluctuations less than 0.1 K. The prototype was calibrated with a Na22 source, with the light yield 1.591�.019 p.e./keV for the 511 keV gamma rays using the domestic-made argon purification system.

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