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The destruction of magnetic surfaces by resonant helical windings

A S Fernandes, M V A P Heller, I L Caldas1988年Plasma Physics and Controlled FusionIF 2.2出版社

A method is presented which can be directly applied to investigate the relation between Tokamak disruptions and the growing of the resonance amplitudes. Helical winding current thresholds for the destruction of magnetic surfaces in large aspect-ratio Tokamaks caused by interaction of different resonant fields are estimated. The radial dependence of the perturbations and the change in the shear over the island widths are taken into account. The magnetic surface break-up due to secondary islands caused by the coupling between the resonant helical fields and the toroidal curvature are also considered.

日本語訳

トカマクにおける磁気面の破壊と共鳴振幅の成長との関係を調べるために直接適用できる方法を提示する。異なる共鳴摂動の相互作用によって引き起こされる、大アスペクト比トカマクにおける磁気面の破壊に対するヘリカル巻線電流のしきい値を評価する。摂動の半径方向依存性と、シア(磁気 shear)の変化が島幅に及ぼす影響を考慮する。また、共鳴ヘリカル摂動とトロイダル曲率との結合によって生じる二次島による磁気面の破壊も考慮する。

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