Theoretical Analysis of Triple Liquid Stub Tuner Impedance Matching for ICRH 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 prese...

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Published inPlasma science & technology Vol. 17; no. 12; pp. 1078 - 1082
Main Author 杜丹 龚学余 尹岚 向东 李景春
Format Journal Article
LanguageEnglish
Published 01.12.2015
Subjects
Computer simulation
Heating
ICRH
Impedance matching
Liquids
Matching
Mathematical models
Tokamaks
Tuners
天线输入阻抗
托卡马克
液态
离子回旋共振加热
等离子体注入
调配
阻抗匹配
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ISSN1009-0630
DOI10.1088/1009-0630/17/12/17

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Summary: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.
Bibliography:matching Stub Triple Tuner impedance triple antenna reflected operational heating
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.
DU Dan , GONG Xueyu ,YIN Lan,XIANG Dong ,LI Jingchun（1Department of Mathematics and Physics, University of South China, Hengyang 421001, China ;2School of Nuclear Science and Technology, University of South China, Hengyang 421001, China）
34-1187/TL
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SourceType-Scholarly Journals-1
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ISSN:1009-0630
DOI:10.1088/1009-0630/17/12/17