Investigation of electron cyclotron current drive efficiency on the J-TEXT tokamak

被引：0

作者：

Fang, Jiangang ^{[1
]}

Yan, Wei ^{[1
]}

Chen, Zhongyong ^{[1
]}

Zhang, Xiaobo ^{[1
]}

Chen, Xixuan ^{[1
]}

Zhang, Junli ^{[1
]}

Mao, Feiyue ^{[1
]}

LI, You ^{[1
]}

Mou, Lingke ^{[1
]}

Zhong, Yu ^{[1
]}

LI, Feng ^{[1
]}

Zhang, Weikang ^{[1
]}

Liu, Fanxi ^{[1
]}

Zou, Guinan ^{[1
]}

Zhou, Song ^{[1
]}

LI, Da ^{[1
]}

Gao, Li ^{[1
]}

Xia, Donghui ^{[1
]}

Yang, Zhoujun ^{[1
]}

Chen, Zhipeng ^{[1
]}

Wang, Nengchao ^{[1
]}

Ding, Yonghua ^{[1
]}

Liang, Yunfeng ^{[1
,2
,3
]}

Pan, Yuan ^{[1
]}

机构：

[1] Huazhong Univ Sci & Technol, Sch Elect & Elect Engn, Int Joint Res Lab Magnet Confinement Fus & Plasma, State Key Lab Adv Electromagnet Engn & Technol, Wuhan 430074, Peoples R China

[2] Chinese Acad Sci, Inst Plasma Phys, Hefei 230031, Peoples R China

[3] Forschungszentrum Julich, Inst Energie & Klimaforsch Plasmaphys, D-52425 Julich, Germany

来源：

PLASMA SCIENCE & TECHNOLOGY | 2022年 / 24卷 / 12期

基金：

中国国家自然科学基金;

关键词：

electron cyclotron current drive; current drive efficiency; residual toroidal electric field; NONINDUCTIVE CURRENT; WAVES; ECCD; CONDUCTIVITY;

D O I：

10.1088/2058-6272/aca86e

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

Electron cyclotron current drive (ECCD) efficiency research is of great importance for the neoclassical tearing mode (NTM) stabilization. Improving ECCD efficiency is beneficial for the NTM stabilization and the ECCD power threshold reduction. ECCD efficiency has been investigated on the J-TEXT tokamak. The electron cyclotron wave (ECW) power scan was performed to obtain the current drive efficiency. The current drive efficiency is derived to be approximately eta (0) = (0.06-0.16) x 10(19) A m(-2) W-1 on the J-TEXT tokamak. The effect of the residual toroidal electric field has been included in the determination of the current drive efficiency, which will enhance the ECCD efficiency. At the plasma current of I (p) = 100 kA and electron density of n (e) = 1.5 x 10(19) m(-3), the ratio of Spitzer conductivity between omhic (OH) and ECCD phases is considered and the experimental data have been corrected. The correction results show that the current drive efficiency eta (1) caused by the fast electron hot conductivity decreases by approximately 79%. It can be estimated that the driven current is approximately 24 kA at 300 kW ECW power.

引用

页数：7

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