Neoclassical tearing mode stabilization by electron cyclotron current drive for HL-2M tokamak  

作　　者：Jing-Chun Li Jia-Qi Dong Xiao-Quan Ji You-Jun Hu 李景春;董家齐;季小全;胡友俊(Department of Earth and Space Sciences,Southern University of Science and Technology,Shenzhen 518000,China;University of California,Irvine,California 92697,USA;Southwestern Institute of Physics,Chengdu 610041,China;Institute of Plasma Physics,Chinese Academy of Sciences,Hefei 230031,China)

机构地区：[1]Department of Earth and Space Sciences,Southern University of Science and Technology,Shenzhen 518000,China [2]University of California,Irvine,California 92697,USA [3]Southwestern Institute of Physics,Chengdu 610041,China [4]Institute of Plasma Physics,Chinese Academy of Sciences,Hefei 230031,China

出　　处：《Chinese Physics B》2021年第7期355-361,共7页中国物理B（英文版）

基　　金：the National Key Research and Development Program of China(Grant Nos.2018YFE0303102,2018YFE0301100,and2017YFE0301702);the National Natural Science Foundation of China(Grant Nos.11905109 and 11947238);U.S.DOE Sci DAC ISEP,users with Excellence Program(on EAST tokamak)of Hefei Science Center CAS under(Grant No.2021HSC-UE017);the Center for Computational Science and Engineering of Southern University of Science and Technology。

摘　　要：Investigation of neoclassical tearing mode and its suppression by electron cyclotron current drive(ECCD)has been carried out in HL-2 M tokamak.The current driving capability of the electron cyclotron wave is evaluated.It is found that the deposition location can be effectively controlled by changing the poloidal angle.The validation of electron cyclotron wave heating and current driving has been demonstrated for the upper launcher port.We show that 3.0 MW and2.5 MW modulated ECCD can completely stabilize(2,1)and(3,2)NTMs,respectively.The non-modulated ECCD,radial misalignment as well as current profile broadening have deleterious effect on the NTM stabilization.The time required for suppression of(3,2)mode is shorter than that required for the suppression of(2,1)mode.Moreover,the time needed for complete stabilization at different initial island width has been quantitatively presented and analyzed.

关 键 词：neoclassical tearing mode magnetic island electron cyclotron current drive numerical modelling 

分 类 号：TL631.24[核科学技术—核技术及应用]