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Characteristics of the divertor plasma in neutral-beam-heated ASDEX discharges

Y. Shimomura, M. Keilhacker, K. Lackner, H. Murmann1983年被引用 93Nuclear FusionIF 3出版社

Scrape-off plasma parameters have been measured in ASDEX both in the divertor chamber and in the mid-plane, for neutral-injection powers of up to 2.5 MW. Measurements demonstrate the existence of strong inhomogeneities parallel to the field lines and show the dependence of divertor density and temperature on bulk plasma density, heating power and mode of divertor operation (gettered/ungettered, different divertor slit widths, additional gas puffing in the divertor). Three recycling regimes, characterized by different dependences of the divertor density on the bulk plasma density, are identified in agreement with a numerical fluid model of the scrape-off plasma. In the particularly attractive high-recycling regime, divertor temperatures could be kept around 7 eV for the whole range of heating powers tested.

日本語訳

スクレイプオフプラズマパラメータは、ダイバータ室と中間面の両方において、最大2.5 MWの中性粒子入射パワーでASDEXにおいて測定された。測定により、磁力線に平行な方向に強い不均一性が存在することが実証され、また、ダイバータ密度と温度の、バルクプラズマ密度、加熱パワー、およびダイバータ運転モード(ゲッタリングの有無、異なるダイバータスリット幅、ダイバータへの追加ガス入射)への依存性が示された。ダイバータ密度のバルクプラズマ密度への異なる依存性によって特徴づけられる3つのリサイクリング領域が、スクレイプオフプラズマの数値流体モデルと一致して同定された。特に魅力的な高リサイクリング領域では、試験された全加熱パワー範囲にわたって、ダイバータ温度を約7 eVに維持することができた。

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asdex-upgrade高精度(タイトル一致)

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DivertorASDEXDivertor plasma
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