RAMP-RATE LIMITATION TEST OF CABLE-IN-CONDUIT CONDUCTORS WITH SUPERCRITICAL HELIUM

被引:18
作者
JEONG, S
TAKAYASU, M
MINERVINI, JV
SCHULTZ, JH
机构
[1] Plasma Fusion Center of Massachusetts Institute of Technology, Cambridge, Massachusetts
关键词
D O I
10.1109/77.402526
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
It has been found on the United States Demonstration Poloidal Coil (US-DPC) and in 27 strand subsized cables of pool boiling cable-in-conduit conductor (CICC), that there is critical current degradation due to fast ramping of the magnetic field. The characteristics of this ramp-rate limitation phenomenon are investigated by using a 27 strand Nb3Sn cable in supercritical helium at 6 atm. A 3 m long cable-in-conduit conductor is prepared noninductively and tested in a background field up to 9.5 tesla with maximum ramp rate of 1.6 tesla/second. The ramp-rate limitation results are compared with results of the ramp rate test of the US-DPC and previous experiments. The experimental data are analyzed to identify and understand possible sources of ramp-rate limitation.
引用
收藏
页码:210 / 213
页数:4
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