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首页> 外文期刊>Nuclear fusion >Resonant features of energy and particle transport during application of resonant magnetic perturbation fields at TEXTOR and DIII-D
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Resonant features of energy and particle transport during application of resonant magnetic perturbation fields at TEXTOR and DIII-D

机译：在TEXTOR和DIII-D处施加共振磁扰动场期间能量和粒子传输的共振特征

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摘要

In this paper, results of a direct comparison of TEXTOR and DⅢ-D experiments with resonant magnetic perturbation (RMP) fields are presented. This comparison of resistive L-mode plasmas at TEXTOR with highly conductive H-mode plasmas at DIII-D is useful to identify generic physics mechanisms during application of RMP fields with a strong field line pitch angle alignment in the plasma edge. A reduction in the pedestal electron pressure p_e with increasing extension of the vacuum modelled stochastic layer and p_e recovery with decreasing layer width is found caused by a q95 resonant reduction in the edge (0.8 < ψ_n < 0.95) electron temperature T_e(q95) on both devices. For RMP edge-localized mode (ELM) suppressed H-mode plasmas at DIII-D, the gradients ▽Te and nominal values of T_e are reduced in this edge region while increasing in the pedestal (0.95 < ψ_N < 1-0) with RMP field applied and both are highly dependent on q59. In contrast, an increase in the central ion temperature with strong steepening of the ion temperature profile at mid-radius is found—again being highly dependent on q95. However, these resonant thermal transport effects are only seen in high triangularity plasmas revealing a strong shape dependence of the thermal transport. In contrast to the highly q95 dependent thermal transport features, the reduction of n_e—known as density pump out—shows a much weaker dependence on q95. We show the potential to reduce the RMP induced particle pump out by fine tuning of the RMP spectral properties. At low resonant field amplitudes enhanced particle confinement is seen in high-field side limited L-mode discharges on both devices while higher resonant field amplitudes yield particle pumps out.
机译：本文给出了将TEXTOR和DⅢ-D实验与共振磁扰动（RMP）场直接比较的结果。 TEXTOR处的电阻性L模式等离子体与DIII-D处的高导电性H模式等离子体的这种比较有助于确定在等离子体边缘具有强场线俯仰角对准的RMP场的应用中识别一般物理机制。发现由于电子模型温度T_e（q95）的边沿（95 <0.8设备。对于DIII-D处受RMP边缘局限模式（ELM）抑制的H模式等离子体，在使用RMP时，在该边缘区域中减小▽Te梯度和T_e标称值，同时在基座上增加（0.95 <ψ_N<1-0）字段应用，并且都高度依赖于q59。相反，发现中部半径处的中心离子温度随离子温度曲线的急剧变陡而升高-再次高度依赖于q95。但是，仅在高三角形等离子体中才能看到这些共振热传输效应，从而显示出热传输对形状的强烈依赖性。与高度依赖q95的热传递特征相反，n_e的减小（即密度抽出）显示出对q95的依赖性弱得多。我们展示了通过微调RMP光谱特性来减少RMP诱导的颗粒泵出的潜力。在低共振场振幅下，在两个器件上的高场侧有限L模式放电中都可以看到增强的颗粒限制，而较高的共振场振幅会使颗粒泵出。

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  • 来源
    《Nuclear fusion》 |2012年第4期|p.043005.1-043005.14|共14页
  • 作者

    O. Schmitz; T.E. Evans; M.E. Fenstermacher; M. Lehnen; H. Stoschus; E.A. Unterberg; J.W. Coenen; H. Frerichs; M.W. Jakubowski; R. Laengner; C.L. Lasnier; S. Mordijck; R.A. Moyer; T.H. Osborne; H. Reimerdes; D. Reiter; U. Samm; B. Unterberg;

  • 作者单位

    Institut fur Energieforschung-Plasmaphysik, Forschungszentrum Jiilich GmbH, Association EURATOM-FZJ, Trilateral Euregio Cluster, 52425 Juelich, Germany;

    General Atomics, PO Box 85608, San Diego, CA 92186-5608, USA;

    Lawrence Livermore National Laboratory, Livermore, CA 94550, USA;

    Institut fur Energieforschung-Plasmaphysik, Forschungszentrum Jiilich GmbH, Association EURATOM-FZJ, Trilateral Euregio Cluster, 52425 Juelich, Germany;

    Institut fur Energieforschung-Plasmaphysik, Forschungszentrum Jiilich GmbH, Association EURATOM-FZJ, Trilateral Euregio Cluster, 52425 Juelich, Germany;

    Oak Ridge National Laboratory, Oak Ridge, TN, USA;

    Institut fur Energieforschung-Plasmaphysik, Forschungszentrum Jiilich GmbH, Association EURATOM-FZJ, Trilateral Euregio Cluster, 52425 Juelich, Germany;

    Institut fur Energieforschung-Plasmaphysik, Forschungszentrum Jiilich GmbH, Association EURATOM-FZJ, Trilateral Euregio Cluster, 52425 Juelich, Germany;

    Max Planck Institute for Plasma Physics, Association IPP-EURATOM, 17491 Greifswald,Germany;

    Institut fur Energieforschung-Plasmaphysik, Forschungszentrum Jiilich GmbH, Association EURATOM-FZJ, Trilateral Euregio Cluster, 52425 Juelich, Germany;

    Lawrence Livermore National Laboratory, Livermore, CA 94550, USA;

    University of California, San Diego, La Jolla, CA 92093-0417, USA;

    University of California, San Diego, La Jolla, CA 92093-0417, USA;

    General Atomics, PO Box 85608, San Diego, CA 92186-5608, USA;

    Columbia University, New York, NY, USA;

    Institut fur Energieforschung-Plasmaphysik, Forschungszentrum Jiilich GmbH, Association EURATOM-FZJ, Trilateral Euregio Cluster, 52425 Juelich, Germany;

    Institut fur Energieforschung-Plasmaphysik, Forschungszentrum Jiilich GmbH, Association EURATOM-FZJ, Trilateral Euregio Cluster, 52425 Juelich, Germany;

    Institut fur Energieforschung-Plasmaphysik, Forschungszentrum Jiilich GmbH, Association EURATOM-FZJ, Trilateral Euregio Cluster, 52425 Juelich, Germany;

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