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Analysis of current drive using MSE polarimetry without equilibrium reconstruction

C.C. Petty, W.R. Fox, T.C. Luce, M.A. Makowski, T. Suzuki2002年被引用 29Nuclear FusionIF 3出版社

A quick yet robust analysis technique has beendeveloped to interpret measurements from the motional Stark effect (MSE)polarimetry diagnostic. The MSE diagnostic measures the verticalcomponent of the magnetic field (Bz) as a function of the plasmamajor radius. Typically these measurements have been used as aconstraint on a numerical calculation of the plasma equilibrium. Theanalysis technique presented here, which converts the MSE measurementsof Bz to quantities of interest using Maxwell's equations and geometric constraints, has someadvantages over equilibrium reconstruction analysis because it does notintroduce assumptions about the shape of the current profile into theanalysis. Further, the results are available immediately after the MSEdata are collected. Examples of this MSE analysis technique are givenusing recent electron cyclotron current drive experiments on theDIII-D tokamak.

日本語訳

モーション・スターク効果(MSE)偏光計測診断からの測定値を解釈するための、迅速かつ堅牢な解析手法が開発された。MSE診断は、プラズマ主半径の関数としての磁場の垂直成分(Bz)を測定する。通常、これらの測定値は、プラズマ平衡の数値計算における拘束条件として用いられてきた。ここで提示する解析手法は、マクスウェル方程式と幾何学的制約を用いてMSE測定値のBzを関心のある物理量に変換するものであり、電流分布の形状に関する仮定を導入しない点で、平衡再構成解析に対していくつかの利点を有する。さらに、この手法の結果は、MSEデータ収集後すぐに得ることができる。このMSE解析手法の例として、DIII-Dトカマクにおける最近の電子サイクロトロン電流駆動実験への適用を示す。

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Current driveEquilibrium reconstruction
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