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

doi:10.1088/1674-1056/20/12/125202

中国物理B ›› 2011, Vol. 20 ›› Issue (12): 125202-125202.doi: 10.1088/1674-1056/20/12/125202

• PHYSICS OF GASES, PLASMAS, AND ELECTRIC DISCHARGES • 上一篇下一篇

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

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

Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, China

收稿日期:2011-03-20 修回日期:2011-06-15 出版日期:2011-12-15 发布日期:2011-12-15
基金资助:
Project supported by the National Natural Science Foundation of China (Grant Nos. 10875149 and 10805057) and the National Magnetic Confinement Fusion Science Program of China (Grant No. 2010GB105004).

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

Li Miao-Hui(李妙辉)^†, Ding Bo-Jiang(丁伯江), Kong Er-Hua(孔二华), Zhang Lei(张磊), Zhang Xin-Jun(张新军), Qian Jin-Ping(钱金平), Yan Ning(颜宁), Han Xiao-Feng(韩效锋), Shan Jia-Fang(单家方), Liu Fu-Kun(刘甫坤), Wang Mao(王茂), Xu Han-Dong(徐旵东), and Wan Bao-Nian(万宝年)

Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, China

Received:2011-03-20 Revised:2011-06-15 Online:2011-12-15 Published:2011-12-15
Supported by:
Project supported by the National Natural Science Foundation of China (Grant Nos. 10875149 and 10805057) and the National Magnetic Confinement Fusion Science Program of China (Grant No. 2010GB105004).

摘要/Abstract

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 D_α 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 tracing code GENRAY are reported.

Abstract: 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 D_α 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 tracing code GENRAY are reported.

Key words: H-mode, edge localized mode, lower hybrid current drive

中图分类号: (Plasma heating by microwaves; ECR, LH, collisional heating)

52.50.Sw

52.65.Ff (Fokker-Planck and Vlasov equation) 52.40.Db (Electromagnetic (nonlaser) radiation interactions with plasma)

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. Investigation of lower hybrid current drive during H-mode in EAST tokamak[J]. 中国物理B, 2011, 20(12): 125202-125202.

Li Miao-Hui(李妙辉), Ding Bo-Jiang(丁伯江), Kong Er-Hua(孔二华), Zhang Lei(张磊), Zhang Xin-Jun(张新军), Qian Jin-Ping(钱金平), Yan Ning(颜宁), Han Xiao-Feng(韩效锋), Shan Jia-Fang(单家方), Liu Fu-Kun(刘甫坤), Wang Mao(王茂), Xu Han-Dong(徐旵东), and Wan Bao-Nian(万宝年) . Investigation of lower hybrid current drive during H-mode in EAST tokamak[J]. Chin. Phys. B, 2011, 20(12): 125202-125202.

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

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

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