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Neoclassical transport due to resonant magnetic perturbations in DIII-D

Priyanjana Sinha, Nathaniel M. Ferraro, Emily Belli2022年被引用 2Nuclear FusionIF 3出版社

The role of neoclassical physics in the particle and energy transport during the application of resonant magnetic perturbations (RMPs) to suppress the edge localised modes in a tokamak is analysed. The neoclassical fluxes in non-axisymmetric DIII-D equilibria with applied RMPs are calculated using the NEO code. The magnetic field provided to NEO as an input is calculated using M3D-C1 and includes the nonlinear one-fluid plasma response. Neoclassical fluxes obtained in this study are found to dramatically increase in the presence of applied RMPs, and are in same range as the total radial particle fluxes calculated in comparable RMP discharges in DIII-D [1]. This suggests that neoclassical transport plays a significant role in edge transport when RMPs are present. An increase in neoclassical fluxes during the edge-localized mode suppressed phase in DIII-D plasmas is calculated and is strongly correlated with the observation of density pump-out in the experiment.

日本語訳

トカマクにおける周辺局在モードを抑制するための共鳴磁場摂動(RMP)印加中の粒子・エネルギー輸送における新古典物理の役割を解析した。印加RMPを伴う非軸対称DIII-D平衡における新古典フラックスをNEOコードを用いて計算した。NEOへの入力として提供される磁場はM3D-C1を用いて計算され、非線形一流体プラズマ応答を含む。本研究で得られた新古典フラックスは、印加RMPの存在下で劇的に増加することが見出され、DIII-Dにおける同等のRMP放電で計算された全放射状粒子フラックスと同程度の範囲にある[1]。これは、RMPが存在する場合、新古典輸送が周辺輸送において重要な役割を果たすことを示唆している。DIII-Dプラズマにおける周辺局在モード抑制位相中の新古典フラックスの増加が計算され、実験における密度ポンプアウトの観測と強く相関している。

装置

diii-d高精度(タイトル一致)

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DIII-DMagnetic perturbationResonant magnetic perturbationNeoclassical transport
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