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Kinetic analysis of the resistive wall modes in the ITER advanced tokamak scenario

L.J. Zheng, M.T. Kotschenreuther, J.W. Van Dam2009年被引用 16Nuclear FusionIF 3出版社

It is found that n = 1 resistive wall modes in the ITER advanced scenario can be fully stabilized by modestly low rotation with a rotation frequency (normalized to the Alfvén frequency at the magnetic axis) of about Ω = 0.0075. The existence of this stabilization scheme is proved with the AEGIS-K (Adaptive EiGenfunction Independent Solution-Kinetic) code, which provides a fully kinetic (non-hybrid) and self-consistent (non-perturbative) description of the system. Wave-particle resonances, shear Alfvén continuum damping, trapped particle effect and the parallel electric effects are all taken into account. The rotation frequency for full stabilization is much larger than the diamagnetic drift frequency; therefore, finite Larmor radius effects are negligible. We also find that the rotation stabilization window opens first near the ideal wall limit.

日本語訳

ITER先進シナリオにおいて、n = 1抵抗性壁モードは、磁気軸におけるアルフヴェン周波数で規格化した回転周波数が約Ω = 0.0075という適度に低い回転によって完全に安定化され得ることが見出された。この安定化スキームの存在は、AEGIS-K(適応固有関数独立解法-運動論的)コードによって実証され、このコードは系の完全な運動論的(非摂動的)かつ自己無撞着な(非経験的)記述を提供する。波動-粒子共鳴、シアー・アルフヴェン連続減衰、捕捉粒子効果、および平行電場効果がすべて考慮されている。完全安定化のための回転周波数は、反磁性ドリフト周波数よりもはるかに大きいため、有限ラーモア半径効果は無視できる。また、回転安定化ウィンドウは、理想壁極限の近傍で最初に開くことも見出された。

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ITERResistive wall modeAdvanced tokamak
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