Frequency multiplication with toroidal mode number of kink/fishbone modes on a static HL-2A-like tokamak

作     者：Zhihui ZOU Ping ZHU Charlson C KIM Wei DENG Xianqu WANG Yawei HOU 邹志慧;朱平;金智善;邓玮;王先驱;侯雅巍

作者机构：CAS Key Laboratory of Geospace Environment and Department of Plasma Physics and Fusion EngineeringUniversity of Science and Technology of ChinaHefei 230026People's Republic of China International Joint Research Laboratory of Magnetic Confinement Fusion and Plasma PhysicsState Key Laboratory of Advanced Electromagnetic Engineering and TechnologySchool of Electrical and Electronic EngineeringHuazhong University of Science and TechnologyWuhan 430074People's Republic of China Department of Engineering PhysicsUniversity of Wisconsin-MadisonMadisonWisconsin 53706United States of America SLS2 ConsultingSan DiegoCalifornia 92107United States of America Southwestern Institute of PhysicsChengdu 610041People's Republic of China Institute of Fusion ScienceSchool of Physical Science and TechnologySouthwest Jiaotong UniversityChengdu 610031People's Republic of China School of Mathematics and PhysicsAnhui Jianzhu UniversityHefei 230601People'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：2022年第24卷第12期

页      面：56-66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 National Magnetic Confinement Fusion Program of China (No. 2019YFE03050004) National Natural Science Foundation of China (Nos.11875253,11775221,51821005 and 11875018) the Fundamental Research Funds for the Central Universities (Nos.WK3420000004 and 2019kfyXJJS193) the Collaborative Innovation Program of Hefei Science Center,CAS (No. 2019HSC-CIP015) the U S Department of Energy (Nos.DEFG02-86ER53218 and DE-SC0018001) 

主　　题：internal kink mode fishbone mode long-lived mode(LLM) energetic particles(EPs) HL-2A NIMROD 

摘      要：In the presence of energetic particles(EPs),the long-lived mode(LLM) frequency multiplication with n=1,2,3,or higher is often observed on HL-2A,where n is the toroidal mode *** kinetic-MHD model simulations of the energetic particle(EP) driven kink/fishbone modes on a static HL-2A-like tokamak using NIMROD code find that when the background plasma pressure is relatively high,and the EP pressure and the beam energy are relatively low,the mode frequency increases almost linearly with EP pressure,and the frequency is proportional to n(’frequency multiplication’),even in the absence of any equilibrium plasma *** addition,the frequency multiplication persists as the safety factor at the magnetic axis q_(0)*** the absence of EPs,the growth rate of the 1/1 mode is the largest;however,as the EP pressure increases,the growth rate of 2/2 modes or 3/3 modes becomes dominant,suggesting that higher-n modes are more vulnerable to *** results may shed light on the understanding of the toroidal mode number dependence of kink/fishbone modes in the advanced scenarios of tokamaks with weak or reversed central magnetic shear.