Speaker
Yuexue Ma
(Technical Institute of Physics and Chemistry, CAS)
Description
The 4He Joule-Thomson cryocooler (JTC) utilizes the JT effect of 4He to typically achieve the temperature of about 4 K. It can be used to cool the detectors with the operating temperature of 4 K and precool the sub-Kelvin refrigerators, which is widely used in space missions such as Astro-H, SPICA, ATHENA, and etc. Based our laboratory’s research, an engineering prototype of the 4He JTC precooled by a two-stage pulse tube cryocooler (PTC) is designed as a precooling stage of the closed-cycle dilution refrigerator. After experiment studies, the 4He JTC successfully obtained a cooling power of 100 mW at 4.0 K with a total input power of 600 W.
Author
Ziyao Liu
(Technical Institute of Physics and Chemistry, CAS)
Co-authors
Bin Yang
(Technical Institute of Physics and Chemistry, Chinese Academy of Science)
Zijie Pan
(Technical Institute of Physics and Chemistry, CAS)
Yuexue Ma
(Technical Institute of Physics and Chemistry, CAS)
Prof.
Jia Quan
(Technical Institute of Physics and Chemistry)
Dr
Jianguo Li
(Technical Institute of Physics and Chemistry)
yanjie Liu
(Technical Institute of Physics and Chemistry)
Prof.
Guotong Hong
(Technical Institute of Physics and Chemistry, CAS)
Prof.
Jingtao Liang
(Technical Institute of Physics and Chemistry, CAS)
