Transient phenomena of supercritical helium for cooling JT-60SA superconducting coils

Kamiya, Koji; Murakami, Haruyuki; Kizu, Kaname; Ichige, Toshikatsu; Yoshida, Kiyoshi

JT-60SA, which replaces all plasma confinement copper coils with superconducting coils, cools the coils with force circulating supercritical helium at a temperature of 4.4K and pressure of 0.6MPa. JT-60SA is equipped with 2 supercritical helium loops. A loop 1 and a loop 2 cool toroidal field coils and poroidal coils, that is center solenoid (CS) and equibrium field coils (EFC), respectively. This study reports transient helium temperature and pressure for cooling CS2 with minimum temperature margin in plasma operation and also when quench occurs.

Language	:	Japanese
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Meeting title	:	2011年度春季低温工学・超電導学会
Held date	:	2011/05
Location (city)	:	つくば
Location (country)	:	日本
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Keywords	:	no keyword
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Registration No. : BB20110163
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