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Global resistive MHD calculations for high beta divertor plasmas in the DIII-D tokamak

J.K. Lee, E.J. Strait, L.L. Lao, T.S. Taylor1989年被引用 8Nuclear FusionIF 3出版社

Long wavelength resistive MHD modes are studied using a three-dimensional stability code and experimentally determined equilibrium profiles of DIII-D H-mode discharges. Calculated magnetic signals at more than two dozen poloidal locations show good agreement with the experimental measurements, both in relative amplitudes and phases, when the vacuum vessel is treated as conducting and its exact non-circular shape is taken into account. Simulations with a simple finite Larmor radius model suggest that the prevailing mode structure of the pressure driven resistive mode might change from short wavelength to long wavelength (from toroidal mode number n = 3 to n = 1) as the plasma pressure is increased, consistent with experimental observations.

日本語訳

長波長の抵抗性MHDモードを、三次元安定性コードとDIII-DのHモード放電の実験的に決定された平衡を用いて研究する。真空容器を導体として扱い、その正確な非円形形状を考慮した場合、計算された磁気信号は、2以上のポロイダル位置において、相対振幅と位相の両方で実験測定と良好な一致を示す。有限ラーマー半径モデルを用いたシミュレーションは、プラズマ圧力の増加に伴い、圧力駆動型抵抗性モードの支配的なモード構造が短波長から長波長へ(トロイダルモード数n = 3からn = 1へ)変化する可能性があることを示唆しており、これは実験観測と一致する。

装置

diii-d高精度(タイトル一致)

wiki

DivertorMagnetohydrodynamicsDIII-DDivertor plasma
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