Development of a 2 K Joule-Thomson Closed-Cycle
Development of a 2 K Joule-Thomson Closed-Cycle
复制标题
2 K 焦耳-汤姆逊闭环的开发
DOI：
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发表时间：
2016
期刊：
影响因子：
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通讯作者：
T. Rawlings
中科院分区：
文献类型：
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作者：
M. Crook;T. Bradshaw;G. Gilley;M. Hills;S. Watson;B. Green;C. Pulker;T. Rawlings
卢瑟福阿普尔顿实验室 (RAL) 目前正在开发一款 2K 焦耳-汤姆逊冷却器，旨在满足未来需要低温的空间科学任务，例如作为 ESA 雅典娜 X 射线望远镜低温链的一部分。该冷却器建立在 RAL 之前开发的闭式循环冷却器的基础上，特别是在 ESA 普朗克任务中飞行的非常成功的 4K-JT 冷却器。然而，2K-JT 冷却器的工作流体将为 3 He，并且增加了两个额外的压缩级，以提供更低的流出压力和更大的总体压缩比。参考普朗克在轨数据的经验教训，描述了 2K-JT 冷却器的设计，并介绍了迄今为止的测试计划结果。
The Rutherford Appleton Laboratory (RAL) is currently developing a 2K Joule-Thomson cooler targeted at future space science missions requiring low temperatures, for example as part of the cryogenic chain for the ESA Athena X-ray telescope. The cooler builds on previous closed cycle cooler developments at RAL, in particular the very successful 4K-JT cooler that was flown on the ESA Planck mission. However the working fluid for the 2K-JT cooler will be 3 He, and two extra stages of compression have been added to provide a much lower effluent pressure and a greater overall compression ratio. The design of the 2K-JT cooler is described, with reference to lessons learnt from Planck in-orbit data, and results of the test program to date are presented.