红外与毫米波学报2023，Vol.42Issue(6)：885-895,11.DOI:10.11972/j.issn.1001-9014.2023.06.022
用于空间BIB探测器的0.3 W@4.2K大冷量轻量化低温系统
A 0.3 W@4.2 K high-capacity lightweight cryogenic system for space BIB detection
摘要
Abstract
Large-array BIB detectors have been the subject of extensive research due to their high quantum effi-ciency and low dark current,particularly for space applications such as the JWST,which was launched in 2021 and has made numerous significant astronomical observations.A stable,efficient,and lightweight temperature zone liquid helium cryogenic system is essential to the operation of the BIB detectors.The helium JT cryocooler is a trend that aims to meet the cooling requirements of a liquid helium temperature zone in space while supplanting the traditional,large-volume liquid helium dewar.To simultaneously increase the cooling capacity at 4.2 K and reduce its weight,a high-capacity,lightweight 4.2 K cryocooler with a cooling power of 0.3 W@4.2 K is pro-posed.Experiments on the previous 0.1 W at 4.1 K prototype of the cryogenic system have validated the sys-tem's design method.Different cooling methods are used in different cooling temperature zones to achieve the ef-ficiency and lightness of cooling.A new integrated Stirling cryocooler was developed to provide efficient pre-cooling at 80 K,with a cooling capacity of 15 W and a weight of only 4.5 kg.A 0.9 W at 15 K active piston phase-shifting pulse tube cryocooler is used to improve the efficiency of the second-stage pre-cooling.The devel-oping cryogenic system can provide a cooling capacity of 0.3 W at 4.2 K with a power consumption of less than 1.8 kW by coupling the helium JT cycle.It will provide the essential guarantee for the large-scale BIB detection required for infrared astronomical observation,which is undergoing rapid development.关键词
低温系统/空间BIB探测器/斯特林/脉冲管/焦汤节流/液氦/多级制冷机Key words
cryogenic system/space BIB detection/stirling/pulse tube/JT/liquid helium/multi-stage cryocooler分类
信息技术与安全科学引用本文复制引用
褚晋简,吴亦农,刘少帅,王鹏,丁磊,肖云龙,殷旺,陈志超,沙鑫权,蒋珍华..用于空间BIB探测器的0.3 W@4.2K大冷量轻量化低温系统[J].红外与毫米波学报,2023,42(6):885-895,11.基金项目
Supported by the Hundred Talents Program of the Chinese Academy of Sciences,the National Natural Science Foundation Projects(51806231),the Strategic Priority Research Program of Chinese Academy of Sciences(XDB35000000,XDB35040102) （51806231）
