Modeling of ion cyclotron resonance frequency heating of proton-boron plasmas in EHL-2 spherical tokamak  

作　　者：Xianshu WU Jingchun LI Jiaqi DONG Yuejiang SHI Guoqing LIU Yong LIU Zhiqiang LONG Buqing ZHANG Baoshan YUAN Y.K.Martin PENG Minsheng LIU 伍先树;李景春;董家齐;石跃江;刘国卿;刘永;龙志强;张布卿;袁宝山;彭元凯;刘敏胜(Shenzhen Key Laboratory of Nuclear and Radiation Safety,Institute for Advanced Study in Nuclear Energy&Safety,College of Physics and Optoelectronic Engineering,Shenzhen University,Shenzhen 510640,People’s Republic of China;Department of Earth and Space Sciences,Southern University of Science and Technology,Shenzhen 518055,People’s Republic of China;ENN Science and Technology Development Co.,Ltd.,and Hebei Key Laboratory of Compact Fusion,Langfang 065001,People’s Republic of China;Siemens Shenzhen Magnetic Resonance Ltd.,Shenzhen 518057,People’s Republic of China)

机构地区：[1]Shenzhen Key Laboratory of Nuclear and Radiation Safety,Institute for Advanced Study in Nuclear Energy&Safety,College of Physics and Optoelectronic Engineering,Shenzhen University,Shenzhen 510640,People’s Republic of China [2]Department of Earth and Space Sciences,Southern University of Science and Technology,Shenzhen 518055,People’s Republic of China [3]ENN Science and Technology Development Co.,Ltd.,and Hebei Key Laboratory of Compact Fusion,Langfang 065001,People’s Republic of China [4]Siemens Shenzhen Magnetic Resonance Ltd.,Shenzhen 518057,People’s Republic of China

出　　处：《Plasma Science and Technology》2024年第10期39-48,共10页等离子体科学和技术（英文版）

基　　金：supported by Shenzhen Municipal Collaborative Innovation Technology Program-International Science and Technology(S&T)Cooperation Project(No.GJHZ20220913142609017);Shenzhen Science and Technology Innovation Commission Key Technical Project(No.JSGG20210713091539014);Ling Chuang Research Project of China National Nuclear Corporation;the“Fourteen Five-Year Plan”Basic Technological Research Project(No.JSZL2022XXXX001)。

摘　　要：Ion cyclotron resonance heating(ICRH)stands out as a widely utilized and cost-effective auxiliary method for plasma heating,bearing significant importance in achieving high-performance discharges in p-^(11)B plasmas.In light of the specific context of p-^(11)B plasma in the EHL-2 device,we conducted a comprehensive scan of the fundamental physical parameters of the antenna using the full-wave simulation program TORIC.Our preliminary result indicated that for p-^(11)B plasma,optimal ion heating parameters include a frequency of 40 MHz,with a high toroidal mode number like N_(?)=28 to heat the majority H ions.In addition,we discussed the impact of concentration of minority ion species on ion cyclotron resonance heating when^(11)B serves as the heavy minority species.The significant difference in charge-to-mass ratio between boron and hydrogen ions results in a considerable distance between the hybrid resonance layer and the tow inverted cyclotron resonance layer,necessitating a quite low boron ion concentration to achieve effective minority heating.We also considered another method of direct heating of hydrogen ions in the presence of boron ion minority.It is found that at appropriate boron ion concentrations(X(^(11)B)~17%),the position of the hybrid resonance layer approaches that of the hydrogen ion cyclotron resonance layer,thereby altering the polarization at this position and significantly enhancing hydrogen ion fundamental absorption.

关 键 词：ICRF hydrogen-boron fusion mode conversion fundamental absorption 

分 类 号：TL631.24[核科学技术—核技术及应用]