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Joint experiments on small tokamaks: edge plasma studies on CASTOR

G. Van Oost, M. Berta, J. Brotankova, R. Dejarnac, E. Del Bosco, E. Dufkova, I. Ďuran, M.P. Gryaznevich, J. Horacek, M. Hron2007年被引用 14Nuclear FusionIF 3出版社

The 1st Joint (Host Laboratory) Experiment on 'joint research using small tokamaks' was carried out using the IPP Prague experimental facility 'CASTOR tokamak'. The main experimental programme was aimed at characterizing the edge plasma in a tokamak by using different advanced diagnostic techniques. It is widely recognized that characterization of phenomena occurring at the plasma edge is essential for understanding the plasma confinement in a tokamak. The edge plasma in small and large scale experiments has many similar features, and the results obtained through detailed measurements in a small flexible device such as CASTOR are in many aspects still relevant to those in large tokamaks. Therefore, it is expected that the results of this joint experiment will have general validity. The radial and poloidal structure of electrostatic turbulence was characterized. The effects of edge biasing were analysed. Radiation fluctuations and profile measurements were performed using fast bolometry. Plasma position measurements were performed using novel Hall sensors.

日本語訳

第1回合同(ホスト研究所)実験「小型トカマクを用いた共同研究」は、プラハのIPP実験施設「CASTORトカマク」を用いて実施された。主要な実験プログラムは、異なる先進的な診断技術を用いてトカマクの周辺プラズマの特性評価を行うことを目的とした。トカマクにおけるプラズマ閉じ込めを理解するためには、プラズマ周辺部で発生する現象の特性評価が不可欠であることが広く認識されている。小型および大型実験における周辺プラズマは多くの類似した特徴を有しており、CASTORのような小型の柔軟な装置における詳細な測定を通じて得られた結果は、多くの点で大型トカマクにも依然として関連性がある。したがって、本共同実験の結果は一般的な妥当性を持つことが期待される。静電乱流の径方向およびポロイダル方向の構造が特性評価された。周辺バイアス印加の効果が分析された。高速ボロメトリーを用いて放射変動およびプロファイル測定が実施された。新規のホールセンサーを用いてプラズマ位置測定が実施された。

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