Theoretical Study On Impedance Matching Process Of ICRH With Three Branch Liquid Conditioner

Ion Cyclotron Resonance Heating (ICRH) is an important approach to heatplasma in EAST. In the fusion experiments, The reflected energy loss can beconsiderably reduced and improve the heating efficiency of ion cyclotron resonanceheating system，while the impedance matching between the transmission line andthe antenna loading, Therefore, the study of the impedance matching of ion cyclotronresonance heating system can effectively promote the research of controlled nuclearfusion.In this paper, the structure of ion cyclotron resonance heating system and thetheory of ion cyclotron resonance heating antenna load impedance matching isintroduced. Based on the theory of transmission line, the impedance matching of tripleliquid stub tuner during the ion cyclotron resonance heating (ICRH) is numericallystimulated, and the dependency of the level of liquid of triple liquid stub tuner onreflectance coefficient at the RF generator of ICRH system is obtained. The resultsshow that under certain experimental conditions, adjusting the level of liquid of tripleliquid stub tuner can reduce the reflectance coefficient effectively, and improve theefficiency of plasma heating. The results can proviode some reference value for theion cyclotron resonance heating experiments.