3D electromagnetic simulation of the coupling characteristics and double-stub Ferrite tuners impedance matching for EAST ICRH four-strap antenna  

作　　者：Hua ZHOU Dan DU Zhongshi YANG KSAITO Qingxi YANG Wei ZHANG Guojian NIU 周华;杜丹;杨钟时;K.SAITO;杨庆喜;张伟;牛国鉴(Institutes of Physical Science and Information Technology,Anhui University,Hefei 230601,People’s Republic of China;Department of Mathematics and Physics,University of South China,Hengyang 421001,People’s Republic of China;Institute of Plasma Physics,Chinese Academy of Sciences,Hefei 230031,People’s Republic of China;ITER Organization,Route de Vinon-sur-Verdon,St.Paul Lez Durance 13115,France)

机构地区：[1]Institutes of Physical Science and Information Technology,Anhui University,Hefei 230601,People’s Republic of China [2]Department of Mathematics and Physics,University of South China,Hengyang 421001,People’s Republic of China [3]Institute of Plasma Physics,Chinese Academy of Sciences,Hefei 230031,People’s Republic of China [4]ITER Organization,Route de Vinon-sur-Verdon,St.Paul Lez Durance 13115,France

出　　处：《Plasma Science and Technology》2024年第11期32-44,共13页等离子体科学和技术（英文版）

基　　金：supported by National Magnetic Confinement Fusion Energy Development Research Project(Nos.2022YFE03070003 and 2019YFE03070000);Natural Science Foundation of Hunan Province(No.2020JJ4515);Key Projects of Hunan Provincial Department of Education(No.20A432);the Government Sponsored Study Abroad Program of the Chinese Scholarship Council(CSC)(No.202108430056);Anhui Provincial Natural Science Foundation(No.2308085MA23);IAEA Coordinated Research Project F43026(No.26480);the National Key Research&Development Program of China(No.2018YFE0303103);National Natural Science Foundation of China(Nos.11875287 and 12275314);Anhui Provincial Key Research&Development Project(No.205258180096)。

摘　　要：A program developed with COMSOL software integrates EAST four-strap antenna coupling with the double-stub Ferrite tuners(FT)impedance matching,obtaining physical quantities crucial for predicting the overall performance of the ion cyclotron resonance heating(ICRH)antenna and matching system.These quantities encompass S-matrix,port complex impedance,reflection coefficients,electric field and voltage distribution,and optimal matching settings.In this study,we explore the relationship between S-matrix,reflection coefficients,port complex impedance,and frequency.Then,we analyze the impact of Faraday screens placement position and transparency,the distance from the Faraday screen(FS)to the current straps(CS),the relative distance between ports,and the characteristic impedance of the transmission line on the coupling characteristic impedance of the EAST ICRH system.Finally,we simulate the electric field distribution and voltage distribution of the EAST ICRH system for plasma heating with double-stub FT impedance matching.Using optimized parameters,the coupling power of the ICRH system can be approximately doubled.The results present herein may offer guidance for the design of high-power,long-pulse operation ICRH antenna systems.

关 键 词：ion cyclotron resonance heating antenna impedance matching system coupling power S-MATRIX EAST 

分 类 号：TL631.24[核科学技术—核技术及应用]