Effects of resonant magnetic perturbations on radial electric fields in DIII-D tokamak  

作　　者：Jingyuan FU Pengfei LIU Xishuo WEI Zhihong LIN Nathaniel Mandrachia FERRARO Raffi NAZIKIAN 付敬原;刘鹏飞;魏西硕;林志宏;Nathaniel Mandrachia FERRARO;Raffi NAZIKIAN(Fusion Simulation Center,Peking University,Beijing 100871,People's Republic of China;Department of Physics and Astronomy,University of California,Irvine,CA 92697,United States of America;Princeton Plasma Physics Laboratory,Princeton,NJ 08543,United States of America)

机构地区：[1]Fusion Simulation Center,Peking University,Beijing 100871,People's Republic of China [2]Department of Physics and Astronomy,University of California,Irvine,CA 92697,United States of America [3]Princeton Plasma Physics Laboratory,Princeton,NJ 08543,United States of America

出　　处：《Plasma Science and Technology》2021年第10期137-149,共13页等离子体科学和技术（英文版）

基　　金：supported by the China National Magnetic Confinement Fusion Science Program(Nos.2017YFE0301300 and 2018YFE0304100);the US Department of Energy(DOE)grant DE-SC0020413 and Sci DAC ISEP Center;Princeton Plasma Physics Laboratory under Contract DE-AC02-09CH11466。

摘　　要：Gyrokinetic simulations of DIII-D tokamak equilibrium find that resonant magnetic perturbation(RMP)drives a neoclassical non-ambipolar electron particle flux,which causes a rapid change of equilibrium radial electric fields consistent with experimental observations during the suppression of the edge localized mode(ELM).The simulation results provide a support for the conjecture that RMP-induced changes of radial electric fields lead to the enhanced turbulent transport at the pedestal top during the ELM suppression(Taimourzadeh et al 2019 Nucl.Fusion59046005).Furthermore,gyrokinetic simulations of collisionless damping of zonal flows show that resonant responses to the RMP decrease the residual level of the zonal flows and damp the geodesic acoustic mode.

关 键 词：resonant magnetic perturbation neoclassical transport zonal flow electric field 

分 类 号：TL631.24[核科学技术—核技术及应用]