Effect of tearing modes on the confinement of runaway electrons in Experimental Advanced Superconducting Tokamak  

作　　者：周瑞杰 Rui-Jie Zhou(Institute of Plasma Physics,Chinese Academy of Sciences,Hefei 230031,China)

机构地区：[1]Institute of Plasma Physics,Chinese Academy of Sciences,Hefei 230031,China

出　　处：《Chinese Physics B》2023年第7期24-28,共5页中国物理B（英文版）

基　　金：Project partly supported by the Youth Innovation Promotion Association of Chinese Academy of Sciences(Grant No.2021445);the Science Foundation of Institute of Plasma Physics of Chinese Academy of Sciences(Grant No.DSJJ-2022-05);partly supported by the Comprehensive Research Facility for Fusion Technology Program of China(Grant No.2018-000052-73-01-001228).

摘　　要：The effect of tearing modes on the confinement of runaway electrons is studied in Experimental Advanced Superconducting Tokamak(EAST).The general tendency of the radial diffusion coefficient of runaway electrons(REs)Dr is derived based on the time response relation between the tearing modes and runaway electrons.The results indicate that,the magnetic fluctuations of tearing modes will enhance the radial diffusion of runaway electrons when the magnetic island is small.Following the increasing of the magnetic fluctuations of the tearing modes,the formed large magnetic island may weaken the radial diffusion of runaway electrons.The results can be important to understand the confinement of runaway electrons when large magnetic islands exist in the plasma.

关 键 词：runaway electrons bremsstrahlung emission TOKAMAK 

分 类 号：TL631.24[核科学技术—核技术及应用]