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X-ray imaging of electron cyclotron heated CLEO plasma by tangential projection

S Takamura, T Todd, T Edlington1986年Plasma Physics and Controlled FusionIF 2.2出版社

X-ray images of electron cyclotron heated Tokamak plasma were taken through a tangential port using a tandem microchannel plate. Tomographic image reconstruction using an algorithm ART was performed for high q Tokamak plasmas heated with a 60 GHz gyrotron at the second harmonic resonance. This clearly shows an outwardly shifted plasma core corresponding to the effects of high beta . The interaction zone of soft runaway electrons with a limiter-like shield over a poloidal coil array was detected. Additionally, the optimization of the vertical position of the hot core was performed by observing these images, producing the maximization of stored energy. The rejection of hard X-rays, which would significantly lower the image contrast, was obtained by temporal grating.

日本語訳

タンデムマイクロチャネルプレートを用いて、接線方向ポートを通して電子サイクロトロン加熱されたトカマクプラズマのX線画像を取得した。第2高調波共鳴において60GHzジャイロトロンで加熱された高qトカマクプラズマに対して、アルゴリズムARTを用いたトモグラフィック画像再構成を実施した。これにより、高ベータの効果に対応する外側にシフトしたプラズマコアが明確に示された。ポロイダルコイルアレイ上のリミッター状シールドとの軟逃走電子の相互作用領域が検出された。さらに、これらの画像を観察することによる高温コアの垂直位置の最適化が実施され、蓄積エネルギーの最大化が達成された。画像コントラストを著しく低下させる硬X線の除去は、時間的グレーティングによって達成された。

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