VDE Characteristics during Disruption Process and its Underlying Acceleration Mechanism in the ITER-EDA Tokamak
スポンサーリンク
概要
- 論文の詳細を見る
The dynamic behavior of vertical displacement events (VDEs) during a disruption and acceleration mechanisms that govern VDEs in the ITER-EDA tokamak are investigated using the Tokamak Simulation Code. A sudden. plasma pressure drop (β_p collapse) does not accelerate VDEs for the ITER tokamak. The geometry of the ITER resistive shell is shown to be suitable for preventing a β_p collapseinduced VDE, because the magnetic field decay n-index after the β_p collapse does not considerably degrade. On the other hand, it is shown that the plasma current quench (I_p quench) following the energy quench can accelerate VDEs due to the vertical imbalance of the attractive force arising from the up-down asymmetric shell. The vertical location of the neutral point where the I_p quench-induced VDE almost disappears is found to lie at 〜 22 cm below the plasma magnetic axis of the nominal equilibrium (Z = 1.44 m). An upward and moderate I_p quench-induced VDE can be expected for the nominal configuration in the ITER-EDA tokamak. It is shown that the ITER tokamak has an advantage of avoiding the fatal damage of the complicated structures of the bottom-divertor.
- 社団法人プラズマ・核融合学会の論文
- 1996-12-25
著者
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KESSEL Charles
Princeton Plasma Physics Labs.
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西尾 敏
Naka Fusion Research Establishment Japan Atomic Energy Research Institute
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NISHIO Satoshi
Naka Fusion Research Establishment, Japan Atomic Energy Research Institute
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Jardin S
Princeton Univ.
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Jardin Stephen
Princeton Plasma Physics Laboratory Princeton University
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Nishio Satoshi
Naka Fusion Research Establishment Japan Atomic Energy Research Institute
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Kessel Charles
Princeton Plasma Physics Laboratory Princeton University
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NAKAMURA Yukiharu
Naka Fusion Research Establishment, Japan Atomic Energy Research Institute
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YOSHlNO Ryuji
Naka Fusion Research Establishment, Japan Atomic Energy Research Institute
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Yoshlno Ryuji
Naka Fusion Research Establishment Japan Atomic Energy Research Institute
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Nakamura Y
Naka Fusion Research Establishment Japan Atomic Energy Research Institute
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Nakamura Yukiharu
Naka Fusion Research Establishment Japan Atomic Energy Research Institute
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Jardin Stephen
Princeton Plasma Physics Laboratory
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中村 幸治
Naka Fusion Research Establishment, Japan Atomic Energy Research Institute
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芳野 隆治
Naka Fusion Research Establishment, Japan Atomic Energy Research Institute
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KESSEL Charles
Princeton Plasma Physics Laboratory
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