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ELM destabilization by externally applied non-axisymmetric magnetic perturbations in NSTX

J.M. Canik, R. Maingi, T.E. Evans, R.E. Bell, S.P. Gerhardt, H.W. Kugel, B.P. LeBlanc, J. Manickam, J.E. Menard, T.H. Osborne2010年被引用 61Nuclear FusionIF 3出版社

We report on a recent set of experiments performed in NSTX to explore the effects of non-axisymmetric magnetic perturbations on the stability of edge-localized modes (ELMs). The application of these 3D fields in NSTX was found to have a strong effect on ELM stability, including the destabilization of ELMs in H-modes otherwise free of large ELMs. Exploiting the effect of the perturbations, ELMs have been controllably introduced into lithium-enhanced ELM-free H-modes, causing a reduction in impurity accumulation while maintaining high confinement. Although these experiments show the principle of the combined use of lithium coatings and 3D fields, further optimization is required in order to reduce the size of the induced ELMs.

日本語訳

我々は、NSTXにおいて、非軸対称磁場摂動がエッジ局在モード(ELM)の安定性に及ぼす影響を調べるために実施された最近の一連の実験について報告する。NSTXにおけるこれらの3次元磁場の印加は、ELM安定性に強い影響を及ぼし、大きなELMを伴わないHモードにおいてELMの不安定化を引き起こすことが見出された。この摂動の効果を利用して、ELMはリチウム強化ELMフリーHモードに制御可能な形で導入され、高閉じ込めを維持しながら不純物蓄積の低減が達成された。これらの実験は、リチウムコーティングと3次元磁場の併用の原理を示すものであるが、誘起されるELMの規模を低減するためにはさらなる最適化が必要である。

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nstx-u高精度(タイトル一致)

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Edge localized modeMagnetic perturbationNSTX
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