Spontaneous current relaxation in NBI heated plasmas on EAST

作     者：Weixing DING Haiqing LIU Jinping QIAN Shoubiao ZHANG D L BROWER Zhiyong ZOU Weiming LI Yao YANG Long ZENG Jinlin XlE Ping ZHU Changxuan YU Ting LAN Shouxin WANG Hui LIAN Yinxian JIE Liqun HU and Baonian WAN 丁卫星;刘海庆;钱金平;张寿彪;D L BROWER;邹志勇;李维明;杨曜;曾龙;谢锦林;朱平;俞昌旋;兰婷;王守信;连辉;揭银先;胡立群;万宝年

作者机构：University of California Los AngelesLos AngelesCalifornia 90095United States of America Institute of Plasma PhysicsChinese Academy of SciencesHefei 230031People＇s Republic of China University of Science and Technology of ChinaHefei 230026People＇s Republic of China 

出 版 物：《Plasma Science and Technology》 (等离子体科学和技术（英文版）)

年 卷 期：2018年第20卷第9期

页      面：3-7页

核心收录：

学科分类：08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 082701[工学-核能科学与工程] 0827[工学-核科学与技术] 0702[理学-物理学] 

基　　金：supported by National Key R&D Program of China,contract No.2014GB106002 partly supported by the US D.O.E.contract DESC0010469 partly supported by the Major Program of Development Foundation of Hefei Center for Physical Science and Technology with contract No.2016FXZY007 

主　　题：current transport NBI plasma density fluctuations magnetic perturbations EAST 

摘      要：We report on current profile evolution in EAST NBI driven plasmas where two neutral beams are injected,one during the current ramp phase and the second during *** the end of the current ramp phase,it is found that a flat q profile with q0-1 is achieved with low magnetic shear in the *** is observed that plasma current and density both relax much faster than resistive time,even in the absence of sawtooth activity when H-L transition *** fluctuations associated with magnetic perturbations（3/2） as a precursor to the H-L transition are *** is likely that these modes play a role in fast current transport.