Linear gyrokinetic simulations of reversed shear Alfvén eigenmodes and ion temperature gradient modes in DIII-D tokamak

作     者：Hongyu WANG Pengfei LIU Zhihong LIN Wenlu ZHANG 王虹宇;刘鹏飞;林志宏;张文禄

作者机构：Fusion Simulation CenterPeking UniversityBeijing 100871People’s Republic of China Department of Physics and AstronomyUniversity of CaliforniaIrvineCA 92697United States of America Institute of PhysicsChinese Academy of SciencesBeijing 100190People’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：2021年第23卷第1期

页      面：32-38页

核心收录：

学科分类：08[工学] 082701[工学-核能科学与工程] 0827[工学-核科学与技术] 

基　　金：supported by the China National Magnetic Confinement Fusion Science Program(Grant No.2018YFE0304100) the US Department of Energy,Office of Science,Office of Advanced Scientific Computing Research and Office of Fusion Energy Sciences,and the Scientific Discovery through Advanced Computing(Sci DAC)program under Award No.DE-SC0018270(Sci DAC ISEP Center) the China Scholarship Council(Grant No.201806010067) used resources of the Oak Ridge Leadership Computing Facility at the Oak Ridge National Laboratory(DOE Contract No.DEAC05-00OR22725) the National Energy Research Scientific Computing Center(DOE Contract No.DE-AC02-05CH11231) 

主　　题：fast ions gyrokinetic simulation reversed shear Alfvén eigenmodes microturbulence 

摘      要：Global linear gyrokinetic simulations using realistic DIII-D tokamak geometry and plasma profiles find co-existence of unstable reversed shear Alfvén eigenmodes(RSAE)with low toroidal mode number n and electromagnetic ion temperature gradient(ITG)instabilities with higher toroidal mode number *** intermediate n?=?[10,12],RSAE and ITG co-exist and overlap weakly in the radial domain with similar growth rates but different real *** RSAE and ITG growth rates decrease less than 5%when compressible magnetic perturbations are neglected in the *** ITG growth rates increase less than 7%when fast ions are not included in the ***,the effects of trapped electrons on the RSAE are negligible.