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Numerical modeling of micro turbulence wave number spectra reconstruction using radial correlation reflectometry: I. O-mode reflectometry at the linear plasma density profile

N V Kosolapova, E Z Gusakov, S Heuraux2012年Plasma Physics and Controlled FusionIF 2.2出版社

Based on the one-dimensional analytical theory of radial correlation reflectometry (RCR), numerical models of RCR experiments have been built. Computations are carried out for O-mode at a simple linear plasma density profile under conditions relevant to experiments. The turbulence spectrum and cross correlation function reconstruction procedure is applied and its feasibility is demonstrated while the assumptions of the model are fulfilled. The limitations of the method are discussed. The numerical models of the RCR experiments, targeted at the reconstruction of the turbulence spectrum in tokamaks where the plasma density profile can be approximated by a linear density profile, are performed and show in most of the cases that the wave number spectra can be extracted. The RCR capabilities and dependences on the main experimental parameters are also studied.

日本語訳

一次元の動径相関反射測定(RCR)の解析理論に基づき、RCR実験の数値モデルを構築した。計算は、実験条件に対応する単純な線形プラズマ密度分布を仮定したOモードについて実施した。乱流スペクトルおよび相互相関関数の再構成手順を適用し、モデルの仮定が満たされる範囲でその実現可能性を示した。また、本手法の限界について議論した。トカマクにおいてプラズマ密度分布が線形分布で近似できる場合を対象としたRCR実験の数値モデルを実行し、ほとんどの場合において波数スペクトルを抽出できることを示した。さらに、RCRの能力と主要な実験パラメータへの依存性についても検討した。

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Density profilesReflectometryLinear plasma
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