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Parametric dependence of the edge radial electric field in the DIII-D tokamak

P. Gohil, K.H. Burrell, T.N. Carlstrom1998年被引用 44Nuclear FusionIF 3出版社

High spatially resolved measurements of the radial electric field, Er, have been made across the transition from L mode to H mode plasmas for many different plasma parameters and conditions. The evolution of the well-like structure of the Er profile formed at the L-H transition has been investigated. No distinct variation in the shape or width of the Er well at the L-H transition is observed as a function of the plasma parameters investigated, such as the plasma current, the toroidal magnetic field and the plasma density. The value of Er is negative just inside the last closed flux surface (LCFS) for all the plasmas studied. There is a variation in the depth of the Er well for different conditions. The experimental results have been compared with theoretical predictions for suppression of plasma turbulence by sheared E × B plasma flow.

日本語訳

高空間分解能での径方向電場Erの測定が、LモードからHモードへの遷移にわたって、多種多様なプラズマパラメータおよび条件下で行われた。L-H遷移時に形成されるErプロファイルの井戸型構造の時間発展が調査された。調査したプラズマパラメータ(プラズマ電流、トロイダル磁場、プラズマ密度など)の関数として、L-H遷移時におけるEr井戸の形状や幅に明確な変化は観測されなかった。最終閉磁気面の内側では、調査したすべてのプラズマにおいてErは負の値を示した。異なる条件下ではEr井戸の深さに変化が見られた。実験結果は、E × Bプラズマ流のシアによるプラズマ乱流抑制に関する理論的予測と比較された。

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diii-d高精度(タイトル一致)

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DIII-DRadial electric field
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