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Measurement and control of turbulence spreading in the scrape-off layer of TJ-II stellarator

G. Grenfell, B.Ph. van Milligen, U. Losada, W. Ting, B. Liu, C. Silva, M. Spolaore, C. Hidalgo, The TJ-II Team2019年被引用 28Nuclear FusionIF 3出版社

In this paper, we report measurements of turbulence drive and spreading in the edge region and scrape-off layer (SOL) of the TJ-II stellarator for plasmas heated by ECRH and NBI. In addition, we show how these and various other relevant quantities can be modulated actively via edge biasing, i.e. by establishing an edge flow shear layer. When the edge shear reaches values close to the inverse of the turbulence correlation time, turbulence spreading and edge-SOL coupling are reduced significantly. The resulting control of SOL spreading via the edge shear is important in view of the issue of understanding and controlling the SOL width in fusion-relevant devices.

日本語訳

本論文では、ECRHおよびNBIによって加熱されたTJ-IIステラレータのプラズマにおける、エッジ領域およびスクレイプオフ層(SOL)での乱流駆動と拡散の測定結果を報告する。さらに、これらの量およびその他の様々な関連量が、エッジバイアス、すなわちエッジ流れシア層を確立することによって、どのように能動的に変調され得るかを示す。エッジシアが乱流相関時間の逆数に近い値に達すると、乱流拡散およびエッジ-SOL結合は大幅に低減される。このエッジシアによるSOL拡散の制御は、核融合関連装置におけるSOL幅の理解と制御という課題を考慮すると重要である。

装置

tj-ii高精度(タイトル一致)

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StellaratorScrape-off layerTJ-II
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