致冷空间应用在欧洲将来的空间任务中,有不少任务需要采用致冷技术,美国也在进行这方面的试验。这些试验的大部分都用了不同致冷方式的探测器。在某些情况下,一些匹配件(如光学元件、防护罩、参考基准等)同样需要致冷。另一方面,由于信号很弱,也要使望远镜系统的反射镜的热辐射噪声干扰减小到可以忽略,因此整个光学系统的温度应保持低于20K甚至更低。这相当于标准液氮(氮1)或超流氮(氮2)的温度。 Refrigeration applications in Europe in the future space mission, there are a lot of tasks need to use refrigeration technology, the United States is also conducting experiments in this area. Most of these tests use detectors of different cooling modes. In some cases, some matching parts (such as optics, shield, reference, etc.) also need to be cooled. On the other hand, due to the weak signal, the thermal radiation noise of the telescope mirror must be negligible so that the temperature of the entire optical system should be kept below 20K or even lower. This corresponds to the temperature of standard liquid nitrogen (nitrogen 1) or superfluid nitrogen (nitrogen 2).