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Vertical instability in TCV: comparison of experimental and theoretical growth rates

F. Hofmann, M.J. Dutch, D.J. Ward, M. Anton, I. Furno, J.B. Lister, J.-M. Moret1997年被引用 27Nuclear FusionIF 3出版社

Growth rates of the axisymmetric mode in vertically elongated plasmas in the Tokamak a Configuration Variable (TCV) are measured and compared with numerically calculated growth rates for the reconstructed equilibria. This comparison is made over a range of discharge parameters including elongation, triangularity and vertical position within the vacuum vessel. Growth rates increase with respect to increasing elongation, decreasing triangularity and increasing vertical distance from the top of the vacuum vessel, as expected. The agreement between the growth rates measured in the experiment and the numerically determined growth rates is excellent, in particular for the full linear magnetohydrodynamic (MHD) model, which accounts for the non-rigid motion of strongly shaped plasma cross-sections

日本語訳

トカマク・ア・コンフィギュレーション・バリアブル(TCV)における垂直方向に伸長したプラズマ中の軸対称モードの成長率を測定し、再構成された平衡状態に対して数値的に計算された成長率と比較した。この比較は、真空容器内での伸長度、三角形度、垂直位置を含む一連の放電パラメータにわたって行われた。成長率は、伸長度の増加、三角形度の減少、および真空容器上部からの垂直距離の増加に伴って増加するが、これは予想どおりである。実験で測定された成長率と数値的に決定された成長率との一致は、特に強く成形されたプラズマ断面の非剛体運動を考慮した完全な線形磁気流体力学(MHD)モデルにおいて、優れている。

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