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

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 o...

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Published in:Chinese physics B 2011-12, Vol.20 (12), p.298-304
Main Author: 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
Format: Article
Language:English
Subjects:
Antennas
Density
Deposition
Emission
H模式放电
Joining
Pipe
Plasma (physics)
Plasma density
Tokamak devices
东亚
低杂波电流驱动
参数范围
托卡马克
模式耦合
电流驱动器
等离子体密度
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cites cdi_FETCH-LOGICAL-c394t-325a4033c7953c8401912bb17dffdffa1e783db2f92408b16c97b79fce377d7e3
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container_title Chinese physics B
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creator 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
description 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.
doi_str_mv 10.1088/1674-1056/20/12/125202
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1741-4199
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source Institute of Physics
subjects Antennas
Density
Deposition
Emission
H模式放电
Joining
Pipe
Plasma (physics)
Plasma density
Tokamak devices
东亚
低杂波电流驱动
参数范围
托卡马克
模式耦合
电流驱动器
等离子体密度
title Investigation of lower hybrid current drive during H-mode in EAST tokamak
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