First observation of unlocking the locked mode by electrode biasing on J-TEXT tokamak

被引：4

作者：

Chen, Zhipeng ^{[1
]}

Wang, Tong ^{[1
]}

Yu, Qingquan ^{[2
]}

Hu, Qiming ^{[3
]}

Li, Da ^{[1
]}

Yang, Jie ^{[1
]}

Han, Dongliang ^{[1
]}

Shen, Chengshuo ^{[1
]}

Xia, Minghui ^{[1
]}

Liu, Hai ^{[4
]}

Wang, Nengchao ^{[1
]}

Huang, Zhuo ^{[1
]}

Yang, Zhoujun ^{[1
]}

Cheng, Zhifeng ^{[1
]}

Gao, Li ^{[1
]}

Ding, Yonghua ^{[1
]}

Shi, Peng ^{[1
]}

Chen, Zhongyong ^{[1
]}

Zhuang, Ge ^{[5
]}

Liang, Yunfeng ^{[1
]}

机构：

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

[2] Max Planck Inst Plasma Phys, D-85748 Garching, Germany

[3] Princeton Plasma Phys Lab, Princeton, NJ 08543 USA

[4] Southwest Jiaotong Univ, Inst Fus Sci, Chengdu 610031, Peoples R China

[5] Univ Sci & Technol China, Sch Phys Sci, Dept Engn & Appl Phys, Hefei 230026, Anhui, Peoples R China

来源：

NUCLEAR FUSION | 2021年 / 61卷 / 02期

基金：

国家重点研发计划; 中国国家自然科学基金;

关键词：

tearing mode; locked mode unlocking; electrode biasing; disruption avoidance;

D O I：

10.1088/1741-4326/abc1f6

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：

Major disruptions, often caused by locked m/n = 2/1 modes (m/n is the poloidal/toroidal mode number), are great threat to a tokamak fusion reactor and should be mitigated or avoided. The locked 2/1 modes have been unlocked by electrode biasing (EB) for the first time in J-TEXT tokamak experiments. The application of a sufficiently negative EB voltage in plasma edge region quickly changes the phase and amplitude of the locked 2/1 mode and drives the mode to rotate in about 10-30 ms. For a larger EB current or a smaller locked mode amplitude, the mode is more easily to be unlocked, revealing a new method for mode unlocking and avoiding plasma disruptions.

引用

页数：6

共 50 条

[21] The timing system on the J-TEXT tokamak
Zheng, Wei
Zhang, Ming
Zhuang, Ge
Ding, Tonghai
Huang, Fuqiang
Shan, Lingjie
FUSION ENGINEERING AND DESIGN, 2014, 89 (01) : 11 - 15
[22] The Microwave Interferometer on J-TEXT Tokamak
Gao, L.
Zhuang, G.
Hu, X. W.
Yang, Z. J.
ISAPE 2008: THE 8TH INTERNATIONAL SYMPOSIUM ON ANTENNAS, PROPAGATION AND EM THEORY, PROCEEDINGS, VOLS 1-3, 2008, : 477 - 478
[23] The vacuum system of the J-TEXT tokamak
Ding, Y. H.
Zhuang, G.
Wang, W. J.
Yao, J. J.
Zhang, X. Q.
Pan, Y.
PLASMA DEVICES AND OPERATIONS, 2009, 17 (03): : 207 - 214
[24] The J-TEXT tokamak Control system
Yang, Zhoujun
Zhuang, Ge
Hu, Xiwei
Zhang, Ming
Qiu, Shengshun
ICECT: 2009 INTERNATIONAL CONFERENCE ON ELECTRONIC COMPUTER TECHNOLOGY, PROCEEDINGS, 2009, : 654 - 658
[25] Study of tearing mode controlled by RMP coils in J-TEXT tokamak
Ding, Yonghua
Jin, Hai
Rao, Bo
Hu, Qiming
Wang, Nengchao
Zhuang, Ge
Gaodianya Jishu/High Voltage Engineering, 2015, 41 (09): : 2868 - 2873
[26] Overview of the recent research on the J-TEXT tokamak
Zhuang, G.
Gentle, K. W.
Diamond, Patrick
Chen, J.
Rao, B.
Wang, L.
Zhao, Kaijun
Han, Sanghee
Shi, Yuejiang
Ding, Y. H.
Chen, Z. Y.
Hu, X. W.
Wang, Z. J.
Yang, Z. J.
Chen, Z. P.
Cheng, Z. F.
Gao, L.
Zhang, X. Q.
Zhang, M.
Yu, K. X.
Pan, Y.
Huang, H.
NUCLEAR FUSION, 2015, 55 (10)
[27] Plasma equilibrium calculation in J-TEXT tokamak
高海龙
徐涛
陈忠勇
庄革
Plasma Science and Technology, 2017, (11) : 5 - 9
[28] First observation of rotation acceleration of magnetic island by using rotating resonant magnetic perturbation on the J-TEXT tokamak
Rao, B.
Ding, Y. H.
Hu, Q. M.
Wang, N. C.
Yi, B.
Zheng, M. Y.
Jin, W.
Li, J. C.
Cheng, Z. F.
Yu, Q.
Yu, K. X.
Zhuang, G.
PLASMA PHYSICS AND CONTROLLED FUSION, 2013, 55 (12)
[29] Plasma equilibrium calculation in J-TEXT tokamak
高海龙
徐涛
陈忠勇
庄革
Plasma Science and Technology, 2017, 19 (11) : 5 - 9
[30] Plasma equilibrium calculation in J-TEXT tokamak
Gao, Hailong
Xu, Tao
Chen, Zhongyong
Zhuang, Ge
PLASMA SCIENCE & TECHNOLOGY, 2017, 19 (11)

← 1 2 3 4 5 →