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Experimental analysis of the ICRF waves coupling in EAST

J.H. Zhang, X.J. Zhang, Y. Cheng, C.M. Qin, Y.P. Zhao, Y.Z. Mao, S. Yuan, L. Wang, S.Q. Ju, G. Chen2017年被引用 27Nuclear FusionIF 3出版社

The experiments were carried out to study the coupling characteristics of the I-port antenna in the ion cyclotron range of frequencies (ICRF) in EAST. The dependencies of the coupling resistance on various parameters including the antenna position, the central electron density, gas injection and the antenna phasing have been studied. The results obtained show that the experimental data are consistent with theoretical simulations. We find that the antenna loading decreases sharply at the L-H transition due to the change of the plasma density profiles in the scrape-off layer (SOL). The effect of the low hybrid wave (LHW) on the ICRF coupling during the H-mode is observed. The theoretical interpretation of the results is discussed, together with the efficient methods to optimize the coupling efficiency.

日本語訳

ICRF帯域におけるEASTのIポートアンテナの結合特性を研究するための実験を実施した。アンテナ位置、中心電子密度、ガス入射、およびアンテナ位相を含む様々なパラメータに対する結合抵抗の依存性を調べた。得られた結果は、実験データが理論シミュレーションと一致することを示している。L-H遷移時には、スクレイプオフ層(SOL)におけるプラズマ密度分布の変化により、アンテナ負荷が急激に減少することがわかった。Hモード中のICRF結合に対する低ハイブリッド波(LHW)の影響が観測された。結果の理論的解釈について、結合効率を最適化するための効率的な方法とともに議論する。

装置

east高精度(タイトル一致)

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EASTIon cyclotron heating
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