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Plasma current profile diagnostics on FT-2 based on correlation reflectometry measurements of MHD modes

A.Yu Stepanov, V.N Budnikov, E.Z Gusakov, L.A Esipov, V.Yu Shorikov1997年Fusion Engineering and DesignIF 1.7出版社

AbstractThe purpose of this study was to demonstrate the possibility of plasma current profile estimation by the correlation reflectometry. The method is based on the determination of the MHD mode oscillations localized in the vicinity of resonant magnetic surfaces by the correlative analysis of multichannel reflectometry signals.The described diagnostic technique allows one to make estimation of the location of different magnetic surfaces, which can provide information on the plasma current profile. Besides, the diagnostics gives frequency spectra and poloidal rotation velocities of the MHD perturbations on rational magnetic surfaces.

日本語訳

抄録:本研究の目的は、相関反射測定法によるプラズマ電流分布推定の可能性を実証することであった。本手法は、多チャンネル反射測定信号の相関解析により、有理磁気面近傍に局在するMHDモード振動を決定することに基づいている。本測定技術により、異なる磁気面の位置を推定することが可能となり、プラズマ電流分布に関する情報を得ることができる。さらに、本測定法は、有理磁気面上のMHD摂動の周波数スペクトルおよびポロイダル回転速度を提供する。

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Plasma diagnosticsMagnetohydrodynamicsReflectometryCurrent profileMHD modes
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