Title :
Pulse tube refrigerators developed for cooling HTS microwave devices
Author :
Liang, Jingtao ; He, Yusheng ; Li, Hong ; Yuan Zhou ; Yang, Luwei ; Zhu, Wenxiu ; Cai, Jinghui ; He, Aisheng ; Gong, Zhonglin ; Smith, P.A. ; Button, T.W. ; Lancaster, M.J. ; Porch, A. ; Avenhaus, B. ; Gough, C.E.
Author_Institution :
Cryogenic Lab., Acad. Sinica, Beijing, China
Abstract :
The pulse tube refrigerator is a competitive new technology for cooling HTS microwave devices because it involves no moving parts at low temperature. A 1.6 W/77 K multi-stage U-shape pulse tube refrigerator driven by a valveless compressor was designed and fabricated. Another coaxial pulse tube refrigerator driven by an air conditioning compressor, with a minimum temperature of 38.4 K and 6 W of cooling power at 77 K, was also developed. Experiments show that vibration of the pulse tube cooler is an order of magnitude smaller than that of Stirling machine. Two HTS microwave devices were integrated with this cooler and operated successfully
Keywords :
cooling; high-temperature superconductors; low-temperature production; superconducting microwave devices; 1.6 W; 38.4 K; 6 W; 77 K; HTS microwave device; U-shape pulse tube refrigerator; air conditioning compressor; coaxial pulse tube refrigerator; cooling; pulse tube refrigerator; valveless compressor; vibration; Air conditioning; Coaxial components; Cooling; Helium; High temperature superconductors; Microwave devices; Pulse compression methods; Refrigerators; Superconducting microwave devices; Valves;
Conference_Titel :
Microwave and Millimeter Wave Technology Proceedings, 1998. ICMMT '98. 1998 International Conference on
Conference_Location :
Beijing
Print_ISBN :
0-7803-4308-5
DOI :
10.1109/ICMMT.1998.768377
