Test Results of the SMES Model Coil. Cool-down and Thermal Characteristics
SMESモデルコイル 初期冷凍・熱特性

Kazuya HAMADA, Takashi KATO, Katsumi KAWANO, Tadaaki HONDA, Masanobu TANEDA, Shuichi SEKIGUCHI, Kouichi IMAHASHI, Kiichi OOTSU, Fumio TAJIRI, Takeshi OHUCHI, Junichi OKAYAMA, Yoshiyuki TAKAYA (+14 others)
1998 TEION KOGAKU (Journal of Cryogenics and Superconductivity Society of Japan)  
Synopsis: A model coil of a superconducting magnetic energy storage (SMES) device, which is a forced -cooled Nb-Ti coil, has been fabricated and a performance test at cryogenic temperatures has been carried out. The SMES model coil is composed of 4 dual pancakes and its total weight is 4.5t. The applied conductors are cable-in-conduit conductors cooled by supercritical helium (SHe) at 4.5K and 0.7MPa. SHe is supplied to the SMES model coil and the structure by a reciprocating bellows pump. The
more » ... est facility is located at the International Thermonuclear Experimental Reactor (ITER) common test facility, was constructed for the testing of an ITER central solenoid model coil. In the experiments, cool-down was finished within 10 days under controlled temperature differences in the SMES model coil. During cool-down and 4.5K operation, pressure drop characteristics of the conductor were measured and the friction factor estimated. The pressure drop characteristics of the SMES model coil were in good agreement with those of the previous cable-in-conduit conductor. During static operation without current, the heat load and refrigerator operation conditions were measured. The heat load of the SMES model coil is 7.5W, which is within the expected value.
doi:10.2221/jcsj.33.467 fatcat:oaqtbh76nnfm7misfbbggi4wfq