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SOLPS-ITER simulations of an X-point radiator in the ASDEX Upgrade tokamak

O. Pan, M. Bernert, T. Lunt, M. Cavedon, B. Kurzan, S. Wiesen, M. Wischmeier, U. Stroth, the ASDEX Upgrade Team2023年被引用 12Nuclear FusionIF 3出版社

The X-point radiator (XPR) is an attractive scenario that may contribute to solving the power exhaust problem in future fusion devices. The 2D transport code SOLPS-ITER was applied to reproduce the experimentally measured plasma condition with an XPR in the ASDEX Upgrade tokamak and to compare with a reduced model. Neutrals penetrating from the adjoining cold divertor region and the large connection length near the X-point play an important role in initiating an XPR. However, once such a radiator is created, it persists even if the fueling and impurity seeding rates were reduced. The redistribution of plasma density and radiation near the X-point caused by fluid drifts at the XPR was studied in the simulation.

日本語訳

X点放射体(XPR)は、将来の核融合装置におけるパワー排気問題の解決に寄与する可能性がある魅力的なシナリオである。2次元輸送コードSOLPS-ITERを適用して、ASDEX UpgradeトカマクにおいてXPRを伴う実験的に測定されたプラズマ条件を再現し、縮約モデルと比較した。隣接する低温ダイバータ領域から浸透する中性粒子とX点近傍の長い接続長は、XPRを開始する上で重要な役割を果たす。しかしながら、いったんそのような放射体が形成されると、燃料供給率と不純物シーディング率が低減された場合でも持続する。XPRにおける流体ドリフトによって引き起こされるX点近傍のプラズマ密度と放射の再分布が、シミュレーションにおいて調べられた。

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asdex-upgrade高精度(タイトル一致)iter高精度(タイトル一致)

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ITERASDEXASDEX UpgradeSOLPS-ITERX-point
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