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On the roles of direct feedback and error field correction in stabilizing resistive-wall modes

Y. In, I.N. Bogatu, A.M. Garofalo, G.L. Jackson, J.S. Kim, R.J. La Haye, M.J. Lanctot, L. Marrelli, P. Martin, M. Okabayashi2010年被引用 14Nuclear FusionIF 3出版社

Active feedback control in the DIII-D tokamak has fully stabilized the current-driven ideal kink resistive-wall mode (RWM). While complete stabilization is known to require both low frequency error field correction (EFC) and high frequency feedback, unambiguous identification has been made about the distinctive role of each in a fully feedback-stabilized discharge. Specifically, the role of direct RWM feedback, which nullifies the RWM perturbation in a time scale faster than the mode growth time, cannot be replaced by low frequency EFC, which minimizes the lack of axisymmetry of external magnetic fields.

日本語訳

アクティブフィードバック制御により、DIII-Dトカマクにおける理想的な抵抗性壁モード(RWM)は完全に安定化されている。完全な安定化には、低周波数の誤差磁場補正(EFC)と高周波数のフィードバックの両方が必要であることが知られているが、完全にフィードバック安定化された放電におけるそれぞれの明確な役割について、曖昧さのない同定がなされている。具体的には、モード成長時間よりも速い時間スケールでRWM摂動を打ち消す直接RWMフィードバックの役割は、外部磁場の軸対称性の欠如を最小化する低周波数EFCによって代替することはできない。

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diii-d低精度(概要文一致)

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Resistive wall modeError field
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