Behavior of multiple modes before and during minor disruption with the external resonant magnetic perturbations on J-TEXT tokamak  

作　　者：Mingxiang HUANG Zhengkang REN Feiyue MAO Zhoujun YANG Yuan GAO Zhichao ZHANG Shunfan HE Guoliang LI Jinrong FAN Wei TIAN Nengchao WANG Zhipeng CHEN Yonghua DING Yuan PAN Zhongyong CHEN 黄名响;任正康;毛飞越;杨州军;高远;张智超;何顺帆;李国梁;樊金荣;田微;王能超;陈志鹏;丁永华;潘垣;陈忠勇(College of Computer Science,South-Central Minzu University,Wuhan 430074,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)

机构地区：[1]College of Computer Science,South-Central Minzu University,Wuhan 430074,People's Republic of China [2]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

出　　处：《Plasma Science and Technology》2022年第6期88-95,共8页等离子体科学和技术（英文版）

基　　金：National MCF Energy R&D Program of China(No.2018YFE0310300);National Natural Science Foundation of China(Nos.51821005,51977221 and 61903384);Fundamental Research Funds for the Central Universities(No.CZY20028);Startup Funds for the Introduction of Talents,South-Central Minzu University(No.YZZ19026)。

摘　　要：The behavior of multiple modes before and during minor disruption with the external resonant magnetic perturbations(RMPs)has been studied on a J-TEXT tokamak.The main component of RMPs is m/n=2/1,where m and n are the numbers of the poloidal and toroidal modes,respectively.During the mode-locking caused by RMPs,it is found that before a minor or a major disruption(if there is no minor disruption),strong oscillations in both electron temperature and density occur if the edge safety factor q_(a)>3.The analysis shows that the oscillations are caused by the m/n=3/1 mode.In addition,using the ECE,Mirnov coils and 2D electron cyclotron emission imaging diagnostic systems,it is found that a thermal collapse occurs on the inner side of the 2/1magnetic island during the minor disruption,and before the collapse,a 3/2 island increases,after the collapse,the 3/2 island may disappear.Moreover,the study also shows that these 3/1,2/1 and 3/2modes play roles in the thermal collapse of disruptions.

关 键 词：OSCILLATION multiple modes DISRUPTION 

分 类 号：TL631.24[核科学技术—核技术及应用]