Recent Results of LHCD Experiments in EAST  

作　　者：丁伯江 孔二华 李妙辉 秦永亮 张磊 A.EKEDAHL Y.PEYSSON 王茂 徐旵东 胡怀传 黄懿云 徐国盛 单家方 刘甫坤 赵燕平 高翔 万宝年 李建刚 

机构地区：[1]Institute of Plasma Physics, Chinese Academy of Sciences [2]CEA/IRFM Cadarache 13108

出　　处：《Plasma Science and Technology》2011年第2期153-156,共4页等离子体科学和技术（英文版）

基　　金：supported by National Natural Science Foundation of China (Nos. 10875149, 10928509 and 10805057);the National Magnetic confinement Fusion Science Program of China (2010GB105004);the Dean Foundation of Hefei Institute of Physical Science,Chinese Academy of Science;partly supported by Core University Program between China and Japan

摘　　要：Lower hybrid wave （LHW）-plasma coupling and lower hybrid current drive （LHCD） experiments in divertor, including single-null and double-null, and limiter configurations were conducted systematically in EAST. A maximum power for launched LHW is 1.4 MW and the plasma current with LHCD is about 1 MA. It is indicated that the coupling is best in limiter configuration, then in single-null one, while worst in double-null one. Study in current drive efficiency by a least squares fit shows that there is no obvious difference in drive efficiency between the double-null and the single-null cases, whereas the efficiency is a slightly lower in the limiter case. The effect of plasma density on the current drive efficiency is due to the influence of density on impurity concentration.Lower hybrid wave （LHW）-plasma coupling and lower hybrid current drive （LHCD） experiments in divertor, including single-null and double-null, and limiter configurations were conducted systematically in EAST. A maximum power for launched LHW is 1.4 MW and the plasma current with LHCD is about 1 MA. It is indicated that the coupling is best in limiter configuration, then in single-null one, while worst in double-null one. Study in current drive efficiency by a least squares fit shows that there is no obvious difference in drive efficiency between the double-null and the single-null cases, whereas the efficiency is a slightly lower in the limiter case. The effect of plasma density on the current drive efficiency is due to the influence of density on impurity concentration.

关 键 词：LHCD LHW-plasma coupling CONFIGURATION 

分 类 号：TL612[核科学技术—核技术及应用]