摘要
The effect of resonant magnetic perturbation(RMP) on boundary turbulence and transport in J-TEXT plasma is experimentally investigated.Edge plasma fluctuations in discharges with and without the(m/n=3/1) RMP currents are diagnosed by using Langmuir probe arrays.It was found that fluctuations in the edge and scrape-off layer(SOL) regions decrease with the application of a 6 kA RMP.The broadband turbulence at the radial location of ρ~0.9 which has a characteristic frequency of 40-150 kHz was strongly suppressed when applying RMP,as was the radial turbulent particle flux and blob transport in the near-SOL region.These experimental findings make RMP a promising method of suppressing and controlling turbulence and particle transport in a plasma boundary.
The effect of resonant magnetic perturbation(RMP) on boundary turbulence and transport in J-TEXT plasma is experimentally investigated.Edge plasma fluctuations in discharges with and without the(m/n=3/1) RMP currents are diagnosed by using Langmuir probe arrays.It was found that fluctuations in the edge and scrape-off layer(SOL) regions decrease with the application of a 6 kA RMP.The broadband turbulence at the radial location of ρ～0.9 which has a characteristic frequency of 40-150 kHz was strongly suppressed when applying RMP,as was the radial turbulent particle flux and blob transport in the near-SOL region.These experimental findings make RMP a promising method of suppressing and controlling turbulence and particle transport in a plasma boundary.
作者
吴婷
聂林
许敏
阳杰
陈志鹏
石跃江
王能超
李达
柯锐
余羿
龚少博
龙婷
陈逸航
刘兵
J-TEXTTeam
Ting WU;Lin NIE;Min XU;Jie YANG;Zhipeng CHEN;Yuejiang SHI;Nengchao WANG;Da LI;Rui KE;Yi YU;Shaobo GONG;Ting LONG;Yihang CHEN;Bing LIU;J-TEXT Team(Southwestern Institute of Physics,Chengdu 610041,People's Republic of China;International Joint Research Laboratory of Magnetic Confinement Fusion and Plasma Physics,State Key Laboratory of Advanced Electromagnetic Engineering and Technology,School of Electrical and Electronic Engineering,Huazhong University of Science and Technology,Wuhan 430074,People's Republic of China;Department of Nuclear Engineering,Seoul National University,Seoul 08826,Republic of Korea;School of Physics,University of Science and Technology of China,Hefei 230026,People's Republic of China;Institute of Fusion Science,School of Physical Science and Technology,Southwest Jiaotong University,Chengdu 610031,People's Republic of China)
基金
supported by the National Key Research & Development Programme of China (No. 2018YFE0309100, 2017YFE0301201)
National Natural Science Foundation of China (Nos. 11875124, U1867222, 11575055, 11705052 & 11705151)
the National Magnetic Confinement Fusion Science Programme of China (Nos. 2015GB120002, 2015GB11101 & 2015GB104000)
