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Turbulence radial correlation length measurements using Doppler reflectometry in TJ-II

F. Fernández-Marina, T. Estrada, E. Blanco2014年被引用 15Nuclear FusionIF 3出版社

First measurements carried out using radial correlation Doppler reflectometry in the TJ-II stellarator are presented. Broad scans in the probing beam angle are performed to study the behaviour of the radial correlation length measured by Doppler reflectometry. A comparison with the simulation results obtained using a two-dimensional full-wave code (Blanco and Estrada 2013 Plasma Phys. Control. Fusion55 125006) indicates that both linear and non-linear regimes are found. In linear regimes, the procedure to calculate the best estimation for the turbulence radial correlation length found in the simulations is applied providing sensible results. These measurements, viewed as a validation of the simulation results, show that Doppler reflectometry provides a good estimation of the turbulence radial correlation length in linear regimes if the probing beam angle is scanned.

日本語訳

TJ-IIステラレーターにおける径方向相関ドップラー反射計を用いた最初の測定結果を提示する。ドップラー反射計によって測定される径方向相関長の挙動を研究するために、プロービングビーム角度の広範囲なスキャンが実施された。二次元全波コード(Blanco and Estrada 2013 Plasma Phys. Control. Fusion55 125006)を用いて得られたシミュレーション結果との比較は、線形および非線形の両方の領域が見出されることを示している。線形領域では、シミュレーションで見出された乱流径方向相関長の最良推定値を計算する手順が適用され、妥当な結果が得られる。シミュレーション結果の検証と見なされるこれらの測定は、プロービングビーム角度をスキャンすれば、ドップラー反射計が線形領域における乱流径方向相関長の良好な推定を提供することを示している。

装置

tj-ii高精度(タイトル一致)

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ReflectometryTJ-IIDoppler reflectometry
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