论文标题
pandax-4T的pandax-4T低温蒸馏系统的设计和调试
Design and Commissioning of the PandaX-4T Cryogenic Distillation System for Krypton and Radon Removal
论文作者
论文摘要
为pandax-4t设计和构建了用于去除Xenon的k k和ra的在线低温蒸馏系统，这是一种高度敏感的暗物质检测实验。预计商用XENON产品中的K含量将减少7个数量级，而XENON收集效率为99％，其流速为10 kg/h。相同的系统可以通过反向操作来减少氙气中的ra含量，而pandax-4t的预期ra降低因子在56.5 kg/h的流速下约为1.8。该系统的调试完成了，在各自的工作条件下测试了K和ra行操作。测量产物氙的K k浓度的上限为8.0 ppt。
An online cryogenic distillation system for the removal of krypton and radon from xenon was designed and constructed for PandaX-4T, a highly sensitive dark matter detection experiment. The krypton content in a commercial xenon product is expected to be reduced by 7 orders of magnitude with 99% xenon collection efficiency at a flow rate of 10 kg/h by design. The same system can reduce radon content in xenon by reversed operation, with an expected radon reduction factor of about 1.8 in PandaX-4T under a flow rate of 56.5 kg/h. The commissioning of this system was completed, with krypton and radon operations tested under respective working conditions. The krypton concentration of the product xenon was measured with an upper limit of 8.0 ppt.
