Simulation of ion cyclotron wave heating in the EXL-50U spherical tokamak based on dispersion relations

作     者：马好杰 谢华生 李博 Haojie MA;Huasheng XIE;Bo LI

作者机构：School of PhysicsBeihang UniversityBeijing 100191People's Republic of China Hebei Key Laboratory of Compact FusionLangfang 065001People's Republic of China ENN Science and Technology Development Co.Ltd.Langfang 065001People'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：2024年第26卷第2期

页      面：54-61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] 0702[理学-物理学] 

基　　金：supported by the National Magnetic Confinement Fusion Energy Program of China (No.2018 YFE0311300) the High-End Talents Program of Hebei Province, Innovative Approaches Towards Development of Carbon-Free Clean Fusion Energy (No.2021HBQZYCSB 006) the Compact Fusion Project of the ENN Group 

主　　题：ion cyclotron range of frequency single-pass absorption spherical tokamak 

摘      要：This study investigates the single-pass absorption(SPA) of ion cyclotron range of frequency(ICRF) heating in hydrogen plasma of the EXL-50U spherical tokamak,which is an upgraded EXL-50 device with a central solenoid and a stronger magnetic *** reliability of the kinetic dispersion equation is confirmed by the one-dimensional full-wave code,and the applicability of Porkolab s simplified theoretical SPA model is discussed based on the kinetic dispersion *** are conducted to investigate the heating effects of the fundamental and second harmonic *** results indicate that with the design parameters of the EXL-50U device,the SPA for second harmonic heating is 63%,while the SPA for fundamental heating is 13%.Additionally,the optimal injection frequencies are 23 MHz at 0.9 T and 31 MHz at 1.2 *** wave vector of the antenna parallel to the magnetic field,with a value of k_‖=7.5 m^(-1),falls within the optimal heating *** reveal that the ICRF heating system can play an important role in the ion heating of the EXL-50U.