Development and Preliminary Commissioning Results of a Long Pulse 140 GHz ECRH System on EAST Tokamak（Invited）

A long pulse electron cyclotron resonance heating（ECRH）system has been developed to meet the requirements of steady-state operation for the EAST superconducting tokamak,and the first EC wave was successfully injected into plasma during the 2015 spring campaign.The system is mainly composed of four 1...

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Published in等离子体科学与技术：英文版 no. 4; pp. 442 - 448
Main Author 徐旵东 王晓洁 刘甫坤 张健 黄懿赟 单家方 吴大俊 胡怀传 李波 李妙辉 杨永 冯建强 徐伟业 汤允迎 韦维 徐立清 刘永 赵海林 J.LOHR Y.A.GORELOV J.P.ANDERSON 马文东 吴则革 王健 张立元 郭斐 孙浩章 闫新胜 EAST Team
Format Journal Article
LanguageEnglish
Published 2016
Subjects
EAST
ECRH系统
GHz
电子回旋共振加热
等离子体加热
调试
超导托卡马克核聚变实验装置
长脉冲
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Summary:A long pulse electron cyclotron resonance heating（ECRH）system has been developed to meet the requirements of steady-state operation for the EAST superconducting tokamak,and the first EC wave was successfully injected into plasma during the 2015 spring campaign.The system is mainly composed of four 140 GHz gyrotron systems,4 ITER-Like transmission lines,4 independent channel launchers and corresponding power supplies,a water cooling,control ＆inter-lock system etc.Each gyrotron is expected to deliver a maximum power of 1 MW and be operated at 100-1000 s pulse lengths.The No.1 and No.2 gyrotron systems have been installed.In the initial commissioning,a series of parameters of 1 MW 1 s,900 k W 10 s,800 k W 95 s and650 k W 753 s have been demonstrated successfully on the No.1 gyrotron system based on calorimetric dummy load measurements.Significant plasma heating and MHD instability suppression effects were observed in EAST experiments.In addition,high confinement（H-mode）discharges triggered by ECRH were obtained.
Bibliography:gyrotron system ECRH millimeter wave EAST steady-state operation
34-1187/TL
A long pulse electron cyclotron resonance heating（ECRH）system has been developed to meet the requirements of steady-state operation for the EAST superconducting tokamak,and the first EC wave was successfully injected into plasma during the 2015 spring campaign.The system is mainly composed of four 140 GHz gyrotron systems,4 ITER-Like transmission lines,4 independent channel launchers and corresponding power supplies,a water cooling,control ＆inter-lock system etc.Each gyrotron is expected to deliver a maximum power of 1 MW and be operated at 100-1000 s pulse lengths.The No.1 and No.2 gyrotron systems have been installed.In the initial commissioning,a series of parameters of 1 MW 1 s,900 k W 10 s,800 k W 95 s and650 k W 753 s have been demonstrated successfully on the No.1 gyrotron system based on calorimetric dummy load measurements.Significant plasma heating and MHD instability suppression effects were observed in EAST experiments.In addition,high confinement（H-mode）discharges triggered by ECRH were obtained.
ISSN:1009-0630