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Investigations of plasma response associated with resonant magnetic perturbation fields using perturbation method in KSTAR H-mode plasmas

W.W. Xiao, T.E. Evans, G.R. Tynan, D.M. Orlov, S.W. Yoon, W.H. Ko, M.W. Kim, Y.M. Jeon, Y.U. Nam, Y.K. Oh2022年Nuclear FusionIF 3出版社

The plasma response associated with the resonant magnetic perturbation (RMP) field was investigated using the small edge perturbations induced by a modulated supersonic molecular beam injection (SMBI) in KSTAR. The modulated SMBI provides a time-varying perturbation of the plasma density source in the region just inside the last closed flux surface and a modulated flow damping rate. Radial propagation of the toroidal rotation perturbation induced by SMBI from the q = 3 surface to the q = 2 surface was observed. Theoretical analysis using the general perturbed equilibrium code of the RMP intensity profiles of the RMP field is consistent with the phase profile of the toroidal rotation perturbation.

日本語訳

共鳴磁場摂動(RMP)に関連するプラズマ応答は、KSTARにおける変調超音速分子ビーム入射(SMBI)によって誘起された小さな周辺摂動を用いて調査された。変調SMBIは、最外閉磁気面のすぐ内側の領域において、時間的に変動するプラズマ密度源の摂動と、変動する流れの減衰率を提供する。SMBIによって誘起されたトロイダル回転摂動の径方向伝播が、q = 3有理面からq = 2有理面まで観測された。一般摂動平衡コードを用いた理論解析により、RMP強度プロファイルの位相プロファイルは、トロイダル回転摂動の位相プロファイルと一致することが示された。

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kstar高精度(タイトル一致)

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H-modeMagnetic perturbationKSTARResonant magnetic perturbation
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