抄録
This paper describes thermal and system design of the 350l/h helium cryogenic system which was constructed for testing the Japanese LCT coil at the Japan Atomic Energy Research Institute (JAERI). The cryogenic system, which is a second step to develop a large and reliable helium cryogenic system for fusion, was designed to have a maximum refrigeration capacity of 1, 000W or a maximum liquefaction capacity of 300l/h at 4.5K; this permits to cool the LCT coil down to 4K in 120 hours. Themodynamic cycle and control system were specified in accordance with technical informations obtained from the Cluster Test Facility. The design and construction work of the system were started in May, 1980 and the first test to check the performances was carried out from June 12 to 16 in 1981 at the JAERI. The measured performances are described in this paper.
