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Spatiotemporal changes in the pressure-driven current densities on DIII-D due to magnetic islands

C.C. Petty, R.J. Jayakumar, M.A. Makowski, C.T. Holcomb, D.A. Humphreys, R.J. La Haye, T.C. Luce, P.A. Politzer, R. Prater, M.R. Wade2012年被引用 6Nuclear FusionIF 3出版社

Using direct analysis of the motional Stark effect (MSE) signals, an explicit measurement of the 'missing' bootstrap current density around the island location of a neoclassical tearing mode (NTM) is made for the first time. When the NTM is suppressed using co-electron cyclotron current drive, the measured changes in the current profile that restore the bootstrap current are also directly found from the MSE measurements. Additionally, direct analysis of helical perturbations in the MSE signals during slowly rotating 'quasi-stationary' modes shows the first explicit measurement of the deficit in the toroidal current density in the island O-point.

日本語訳

モーション・スターク効果(MSE)信号の直接解析を用いて、新古典ティアリングモード(NTM)の磁気島位置周辺における「欠損した」ブートストラップ電流密度の明示的な測定が初めてなされた。NTMがコ電子サイクロトロン電流駆動によって抑制される際、ブートストラップ電流を回復する電流分布の測定された変化もまた、MSE測定から直接見出された。さらに、ゆっくり回転する「準定常」モードの間のMSE信号におけるヘリカル摂動の直接解析は、磁気島O点におけるトロイダル電流密度の欠損の最初の明示的測定を示している。

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diii-d高精度(タイトル一致)

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DIII-DMagnetic islands
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