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EAST全超导托克马克聚变实验装置由16个D形环向场线圈和12个圆形极向场线圈组成,大半径1.7m,当环形场线圈励磁14.3kA时,中心场3.5T;±14.5kA极向场线圈可提供10Vs磁通量变化.连接这些超导磁体与13台独立电源和一台制冷机之间的低温和超导部件组成大型供电供冷馈线,在EAST装置外部的外馈线包括:两组超导母线;13对电流引线及其杜瓦;一个大的低温分配恒温器,内装有40多个低温控制阀,4.4K液氦槽,3.8K过冷槽,78K液氮槽和4台超临界氦循环泵;五条低温传输线.本文介绍外馈线的设计、安装和运行情况.
EAST full superconducting Tokemark fusion experimental device consists of 16 D-shaped loop field coils and 12 circular polar field coils, a large radius of 1.7m, when the ring field coil excitation 14.3kA, the center field 3.5T; ± The 14.5kA poloidal field coil provides a 10Vs change in flux. Connecting these superconducting magnets to the low temperature and superconducting components between 13 independent power supplies and a chiller constitutes a large power supply and cooling feeder. The external feeder external to the EAST unit includes : Two sets of superconducting busbars; 13 pairs of current leads and their dewar; a large cryogenic distribution thermostat with more than 40 cryogenic control valves, a 4.4K liquid helium tank, a 3.8K undercooling tank, a 78K liquid nitrogen tank and Four supercritical helium circulating pump, five low temperature transmission lines.This paper introduces the design, installation and operation of the external feeder.