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Plasma beta effects on the edge magnetic field structure and divertor heat loads in Wendelstein 7-X high-performance scenarios

A. Knieps, Y. Suzuki, J. Geiger, A. Dinklage, S. Zhou, K. Rahbarnia, J. Schilling, U. Neuner, H. Thomsen, M. Jakubowski2022年被引用 3Nuclear FusionIF 3出版社

To support the scenario design for the upcoming long-pulse high-performance campaign of Wendelstein 7-X, this work presents a study of high-beta full-field 3D equilibria obtained with the HINT code. For three magnetic configurations of different edge-ι, the effects of both overall pressure and pressure profile changes on the magnetic topology are analyzed. Anisotropic diffusion modeling is used to obtain estimates of the conductive heat load distribution both on the divertor and other plasma-facing components in finite-beta magnetic configurations. For the magnetic standard configuration, limitations of the model are outlined by comparing measured and predicted heatloads by performing a linear regression of the main strike-line position against various plasma parameters in both the experimental and the simulated device.

日本語訳

今後のWendelstein 7-Xの長時間パルス高性能運転のシナリオ設計を支援するため、本稿ではHINTコードを用いて得られた高ベータ完全3次元平衡の研究を提示する。異なるエッジ・イオタ(edge-ι)を有する3つの磁場配位について、全体圧力と圧力分布の変化が磁場トポロジーに及ぼす影響を解析する。異方性拡散モデリングを用いて、有限ベータ磁場配位におけるダイバータおよびその他のプラズマ対向機器への熱流束分布の推定値を得る。標準磁場配位については、実験装置とシミュレーション装置の両方において主要なストライク点位置を様々なプラズマパラメータに対して線形回帰することにより、測定された熱流束と予測された熱流束を比較して、モデルの限界を概説する。

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wendelstein-7x高精度(タイトル一致)

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DivertorWendelsteinHeat load
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