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SOLPS-ITER modeling with activated drifts for a snowflake divertor in ASDEX Upgrade

O Pan, T Lunt, M Wischmeier, D Coster, U Stroth, the ASDEX Upgrade team2020年Plasma Physics and Controlled FusionIF 2.2出版社

We report on the first SOLPS-ITER simulations of a low-field side snowflake minus (LFS SF−) divertor configuration with drifts fully activated in ASDEX Upgrade. Compared to a reference case without drifts, the simulation in normal toroidal magnetic field configuration (B × ∇B points to the primary X-point) shows a larger low-field-side/high-field-side asymmetry, an enhanced radial cross field transport, as well as a flux redistribution between the primary and secondary strike points. Although small compared to the total input power, power is found even on a strike point magnetically disconnected from the outer mid-plane, which is hard to explain by purely diffusive transport.

日本語訳

我々は、ASDEX Upgradeにおいてドリフトを完全に活性化した低磁場側スノーフレーク・マイナス(LFS SF−)ダイバータ配位の初のSOLPS-ITERシミュレーションについて報告する。ドリフトを含まない参照ケースと比較して、通常のトロイダル磁場配位(B×∇Bが主X点を向く)でのシミュレーションでは、低磁場側/高磁場側の非対称性がより大きく、径方向輸送が強化され、さらに主・副打撃点間でのフラックス再分配が生じることが示された。全入力パワーと比較して小さいものの、外側赤道面から磁気的に切り離された打撃点にもパワーが到達することが確認され、これは純粋な拡散輸送では説明が困難である。

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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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ITERDivertorASDEXASDEX UpgradeSOLPS-ITER
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