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Achieving high flux amplification in a gun-driven, flux-core spheromak

E.B. Hooper, D.N. Hill, H.S. McLean, C.A. Romero-Talamás, R.D. Wood2007年被引用 11Nuclear FusionIF 3出版社

A new means of operating flux-core spheromaks with possibly increased stability, confinement and pulse length is analysed by a resistive magnetohydrodynamic (MHD) model. High amplification of the bias poloidal flux, required to minimize ohmic losses, is achieved by reducing the bias rapidly in a plasma formed at a lower amplification. The plasma separatrix is predicted to expand and incorporate the removed bias flux maintaining the total poloidal flux within the spheromak's flux-conserving wall. MHD energy on open magnetic field lines is reduced, reducing magnetic fluctuation levels. A means of experimental verification is suggested that may point the way to fusion-relevant spheromaks.

日本語訳

フラックスコア・スフェロマクを、おそらく増大した安定性、閉じ込め、およびパルス長で運転する新しい手段が、抵抗性電磁流体力学(MHD)モデルによって解析される。オーミック損失を最小化するために必要なバイアス・ポロイダル磁束の高増幅は、より低い増幅率で形成されたプラズマにおいてバイアスを急速に減少させることによって達成される。プラズマのセパラトリックスは膨張し、除去されたバイアス磁束を取り込んで、スフェロマクの磁束保存壁内の全ポロイダル磁束を維持すると予測される。開放磁力線上のMHDエネルギーは低減され、磁気揺動レベルが減少する。実験的検証の手段が提案され、それが核融合に関連するスフェロマクへの道筋を示す可能性がある。

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