无绝缘高温超导跑道型磁体设计

Design of a HTS racetrack magnet without turn-to-turn insulation

环向场磁体是ITER托卡马克装置中的核心部分,采用无绝缘高温超导磁体技术能使其产生更高的稳态场。文中介绍了无绝缘高温超导磁体技术的原理和特点,并以跑道型磁体为着手点,使用不同的超导带材,利用有限元法设计无绝缘高温超导磁体,总结了线圈个数与布局对磁体临界电流和中心磁场的影响。该磁体在20K下可产生的稳态磁场约为3.59T。

TF magnets are core device of ITER Tokamak, using the technique of HTS magnet with out turn -to -turn insula- tion can make them generate a higher magnetic field. This paper introduced the principle and characteristics of HTS magnet with out turn - to - turn insulation. According to this technique, the electromagnetic design of a HTS racetrack magnet using different types was carried out. Then, effects of the number and arrangement of coils on critical current and magnetic field were summa-rized. A steady-state magnetic field of 3.59T could be achieved under 20K.