The cryogenic system for the Panda-X dark matter search experiment
The cryogenic system for the Panda-X dark matter search experiment
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DOI：
10.1088/1748-0221/8/01/p01002
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发表时间：
2012-07
影响因子：
1.3
通讯作者：
Z. Li;K. Giboni;H. Gong;X. Ji;A. Tan
中科院分区：
文献类型：
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作者：
Z. Li;K. Giboni;H. Gong;X. Ji;A. Tan
Panda-X是用于暗物质搜索的液体氙双相探测器。第一个中等尺寸的模块将很快安装在中国四川省的中国锦屏深层地下实验室。中国低温系统设计用于处理更大的探测器，甚至是吨级的最终版本。特别注意的可靠性，服务性和适应性的要求，不断增长的实验。该系统由一台Iwatani PC 150脉冲管制冷机冷却。减去所有热损失后，剩余的冷却功率仍为82 W。填充速度为0.75 g/s，但可以通过液氮辅助冷却提高到3.3 g/s。对于通过热吸气剂的连续再循环和净化，采用热交换器来降低所需的冷却功率。再循环速度由气体泵限制为2.9 g/s。在该速度下，再循环仅增加了18.5 W的系统热负荷，对应于95.2%的热交换器效率。
Panda-X is a liquid xenon dual-phase detector for the Dark Matter Search. The first modestly-sized module will soon be installed in the China JinPing Deep Underground Laboratory in Sichuan province, P.R. China. The cryogenic system is designed to handle much larger detectors, even the final version in the ton scale. Special attention has been paid to the reliability, serviceability, and adaptability to the requirements of a growing experiment. The system is cooled by a single Iwatani PC150 Pulse Tube Refrigerator. After subtracting all thermal losses, the remaining cooling power is still 82 W. The fill speed was 0.75 g/s, but could be boosted by LN2 assisted cooling to 3.3 g/s. For the continuous recirculation and purification through a hot getter, a heat exchanger was employed to reduce the required cooling power. The recirculation speed is limited to 2.9 g/s by the gas pump. At this speed, recirculation only adds 18.5 W to the heat load of the system, corresponding to a 95.2 % efficiency of the heat exchanger.