Theoretical Analysis of Triple Liquid Stub Tuner Impedance Matching for ICRH on Tokamaks  

作　　者：杜丹 龚学余 尹岚 向东 李景春 

机构地区：[1]Department of Mathematics and Physics,University of South China [2]School of Nuclear Science and Technology,University of South China

出　　处：《Plasma Science and Technology》2015年第12期1078-1082,共5页等离子体科学和技术（英文版）

基　　金：supported by the National Magnetic Confinement Fusion Science Program of China(Nos.2014GB108002,2013GB107001);National Natural Science Foundation of China(Nos.11205086,11205053,11375085,and 11405082);the Construct Program of Fusion and Plasma Physics Innovation Team in Hunan Province,China(No.NHXTD03);the Natural Science Foundation of Hunan Province,China(No.2015JJ4044)

摘　　要：The impedance matching is crucial for continuous wave operation of ion cyclotron resonance heating（ICRH） antennae with high power injection into plasmas.A sudden increase in the reflected radio frequency power due to an impedance mismatch of the ICRH system is an issue which must be solved for present-day and future fusion reactors.This paper presents a method for theoretical analysis of ICRH system impedance matching for a triple liquid stub tuner under plasma operational conditions.The relationship of the antenna input impedance with the plasma parameters and operating frequency is first obtained using a global solution.Then,the relations of the plasma parameters and operating frequency with the matching liquid heights are indirectly obtained through numerical simulation according to transmission line theory and matching conditions.The method provides an alternative theoretical method,rather than measurements,to study triple liquid stub tuner impedance matching for ICRH,which may be beneficial for the design of ICRH systems on tokamaks.The impedance matching is crucial for continuous wave operation of ion cyclotron resonance heating（ICRH） antennae with high power injection into plasmas.A sudden increase in the reflected radio frequency power due to an impedance mismatch of the ICRH system is an issue which must be solved for present-day and future fusion reactors.This paper presents a method for theoretical analysis of ICRH system impedance matching for a triple liquid stub tuner under plasma operational conditions.The relationship of the antenna input impedance with the plasma parameters and operating frequency is first obtained using a global solution.Then,the relations of the plasma parameters and operating frequency with the matching liquid heights are indirectly obtained through numerical simulation according to transmission line theory and matching conditions.The method provides an alternative theoretical method,rather than measurements,to study triple liquid stub tuner impedance matching for ICRH,which may be beneficial for the design of ICRH systems on tokamaks.

关 键 词：matching Stub Triple Tuner impedance triple antenna reflected operational heating 

分 类 号：TL631.24[核科学技术—核技术及应用] TB552[理学—物理]