Recent development status of compact 2 K GM cryocoolers

Cryogenic Engineering Conference 2015

材料科学;物理学

Bao, Q.^1 ; Xu, M.Y.^1 ; Tsuchiya, A.^1 ; Li, R.^2

Technology Research Center, Sumitomo Heavy Industries, Ltd, Yato-cho, Nishitokyo, Tokyo, Japan^1

Cryogenics Division, Precision Equipment Group, Sumitomo Heavy Industries, Ltd, Yato-cho, Nishitokyo, Tokyo, Japan^2

关键词: Cooling solutions;    Development status;    Growing demand;    Innovative technology;    Material selection;    No-load conditions;    Structure design;    Superconducting electronic devices;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/101/1/012136/pdf
DOI  :  10.1088/1757-899X/101/1/012136

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

To meet the growing demand for a compact cooling solution for superconducting electronic devices, we developed a two-stage 2 K GM cryocooler and a cryostat system, which can reach 46.3 K / 2.2 K on the first and second stages under no-load conditions. Nevertheless, with several innovative technologies applied, the total length of the expander cylinder is reduced to under 70% of the smallest conventional 4 K GM cryocooler. In this paper we will present the design method, including material selection and structure design with detailed explanation, which has been confirmed by both simulation and experiment.