论文标题
pandax-4T实验的低温和氙处理系统
The Cryogenics and Xenon handling system for the PandaX-4T Experiment
论文作者
论文摘要
Pandax-4T是Pandax检测器的新一代，是一个XENON双相检测器，大约六吨液体氙气作为暗物质搜索的靶标。低温和氙处理系统旨在液化和净化该大型检测器。在本文中，报道了低温和气体处理系统委托的结果。在178 K处的最大冷却能力在178 K时具有三个合作的冷头。辅助液氮冷却的填充速率可以达到约700 kg/天。液氮的平均恢复率约为440 kg/天。两个循环回路的最大总净化速度高达〜155 slpm。每个循环都使用大型热交换器，测量的热交换效率约为97.5+-0.5％。
PandaX-4T, the new generation of the PandaX detector, is a xenon dual-phase detector with about six tons of liquid xenon as target for dark matter search. A cryogenics and xenon handling system is designed to liquify and purify this large detector. In this paper, the results on the commission of the cryogenics and gas handling system are reported. The maximum cooling power of ~ 580 W at 178 K with three cooperating coldheads has been achieved. The filling rate with an assisted liquid nitrogen cooling can reach ~ 700 kg/day. The average rate of recuperation by liquid nitrogen is around 440 kg/day. The maximum total purification speed of two circulation loops is up to ~ 155 slpm. Each loop is using a large heat exchanger with a measured heat exchange efficiency of ~ 97.5+-0.5%.
