Speaker
Dr
Mingyao Xu
(Sumitomo Heavy Industries, Ltd.)
Description
A compact 2K Gifford-McMahon (GM) cryocooler has been developed for cooling electronic devices, such as Superconducting Single Photo Detectors. The heat exchangers, regenerators are optimized with the simulation method developed for 4K GM cryocoolers. After optimizing, the cylinder length is reduced by about 80 mm compared with a commercial 0.1W 4K GM cryocooler. With no load on the second stage, a temperature of about 2.2K has been achieved. And also, it is found that the temperature oscillation decreases as the average temperature decreases. A temperature oscillation displacement of less than ±20 mK has been achieved. The object of the project, target specification, and a summary of experiment results will also be introduced in this paper.
The research results have been achieved by "Development of a Compact Superconducting Single Photon Detector System for Photon-Quantum Information and Communication", the National Institute of Information and Communications Technology (NICT), JAPAN.
Author
Dr
Mingyao Xu
(Sumitomo Heavy Industries, Ltd.)
Co-authors
Mr
Akihiro Tsuchiya
(Sumitomo Heavy Industries, Ltd.)
Mr
Qian Bao
(Sumitomo Heavy Industries, Ltd.)
Dr
Rui Li
(Sumitomo Heavy Industries, Ltd.)
