Investigation of lower hybrid current drive during H-mode in EAST tokamak  

作　　者：李妙辉 丁伯江 孔二华 张磊 张新军 钱金平 颜宁 韩效锋 单家方 刘甫坤 王茂 徐旵东 万宝年 

机构地区：[1]Institute of Plasma Physics,Chinese Academy of Sciences

出　　处：《Chinese Physics B》2011年第12期298-304,共7页中国物理B（英文版）

基　　金：supported by the National Natural Science Foundation of China (Grant Nos. 10875149 and 10805057);the National Magnetic Confinement Fusion Science Program of China (Grant No. 2010GB105004)

摘　　要：H-mode discharges with lower hybrid current drive （LHCD） alone are achieved in EAST divertor plasma over a wide parameter range. These H-mode discharges are characterized by a sudden drop in Da emission and a spontaneous rise in main plasma density. Good lower hybrid （LH） coupling during H-mode is obtained by putting the plasma close to the antenna and by injecting D2 gas from a pipe near the grill mouse. The analysis of lower hybrid current drive properties shows that the LH deposition profile shifts off axis during H-mode, and current drive （CD） efficiency decreases due to the increase in density. Modeling results of H-mode discharges with a general ray trueing code GENRAY are reported.H-mode discharges with lower hybrid current drive （LHCD） alone are achieved in EAST divertor plasma over a wide parameter range. These H-mode discharges are characterized by a sudden drop in Da emission and a spontaneous rise in main plasma density. Good lower hybrid （LH） coupling during H-mode is obtained by putting the plasma close to the antenna and by injecting D2 gas from a pipe near the grill mouse. The analysis of lower hybrid current drive properties shows that the LH deposition profile shifts off axis during H-mode, and current drive （CD） efficiency decreases due to the increase in density. Modeling results of H-mode discharges with a general ray trueing code GENRAY are reported.

关 键 词：H-MODE edge localized mode lower hybrid current drive 

分 类 号：TL612[核科学技术—核技术及应用]