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Tearing mode velocity braking due to resonant magnetic perturbations

L. Frassinetti, S. Menmuir, K.E.J. Olofsson, P.R. Brunsell, J.R. Drake2012年被引用 19Nuclear FusionIF 3出版社

The effect of resonant magnetic perturbations (RMPs) on the tearing mode (TM) velocity is studied in EXTRAP T2R. Experimental results show that the RMP produces TM braking until a new steady velocity or wall locking is reached. The braking is initially localized at the TM resonance and then spreads to the other TMs and to the rest of the plasma producing a global velocity reduction via the viscous torque. The process has been used to experimentally estimate the kinematic viscosity profile, in the range 2–40 m2 s−1, and the electromagnetic torque produced by the RMP, which is strongly localized at the TM resonance. Experimental results are then compared with a theoretical model which gives a reasonable qualitative explanation of the entire process.

日本語訳

共鳴磁気摂動(RMP)が tearing モード(TM)速度に及ぼす影響を EXTRAP T2R において研究した。実験結果は、RMP が新しい定常速度または壁ロックに達するまで TM の制動を生じさせることを示している。制動は当初 TM 共鳴に局在し、その後他の TM およびプラズマの他の部分に伝播し、粘性トルクを介して全体の速度低減を生じさせる。この過程を用いて、運動粘性係数のプロファイルを 2〜40 m² s⁻¹ の範囲で実験的に推定し、また TM 共鳴に強く局在する RMP による電磁トルクを推定した。実験結果はその後、全過程の合理的な説明を与える理論モデルと比較された。

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Tearing modeMagnetic perturbationResonant magnetic perturbation
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