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Stabilization effect of early ECCD on a neoclassical tearing mode in the JT-60U tokamak

K. Nagasaki, A. Isayama, S. Ide, JT-60 team2003年被引用 50Nuclear FusionIF 3出版社

Stabilization of an m = 3/n = 2 neoclassical tearing mode (NTM) has been studied experimentally by applying a local electron cyclotron current drive (ECCD) in the JT-60U tokamak. The EC power is injected before the mode onset, and its effect is compared with the ECCD applied at the saturation phase. The experimental results show that the ECCD applied at the growth phase is more effective than that applied at the saturation phase. The necessary EC power for the suppression is reduced and the mode onset is delayed, indicating the hysterisis characteristics of the NTM on the ECCD stabilization. The dependence on the EC power and injection angle is also shown.

日本語訳

m = 3/n = 2新古典テアリングモード(NTM)の安定化について、JT-60Uトカマクにおいて局所的な電子サイクロトロン電流駆動(ECCD)を適用することにより実験的に研究した。ECはモード発生前に入射され、その効果は飽和位相で適用されたECCDと比較された。実験結果は、成長位相で適用されたECCDが飽和位相で適用されたものよりも効果的であることを示している。抑制に必要なECパワーは低減され、モード発生は遅延し、ECCD安定化に対するNTMのヒステリシス特性が示された。ECパワーと入射角度への依存性も示されている。

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Tearing modeJT-60UNeoclassical tearing modeElectron cyclotron current drive
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