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The effect of magnetic field configuration on particle pinch velocity in compact helical system (CHS)

H Iguchi, K Ida, H Yamada, K Itoh, S -I Itoh, K Matsuoka, S Okamura, H Sanuki, I Yamada, H Takenaga1994年Plasma Physics and Controlled FusionIF 2.2出版社

Radial particle transport has been experimentally studied in the low-aspect-ratio heliotron/torsatron device CHS. A non-diffusive outward particle flow (inverse pinch) is observed in the magnetic configuration with the magnetic axis shifted outward, while an inward pinch, like in tokamaks, is observed with the magnetic axis shifted inward. This change in the direction of anomalous particle flow is not due to the reversal of temperature gradient nor the radial electric field. The observation suggests that the particle pinch velocity is sensitive to the magnetic field structure.

日本語訳

低アスペクト比ヘリオトロン/トーサトロン装置CHSにおいて、径方向粒子輸送が実験的に研究された。磁気軸が外側にシフトした磁場配位では、非拡散的な外向き粒子流(逆ピンチ)が観測され、一方、磁気軸が内側にシフトした配位では、トカマクと同様の内向きピンチが観測された。この異常粒子流の方向の変化は、温度勾配の反転によるものではなく、また径方向電場によるものでもない。この観測結果は、粒子ピンチ速度が磁場構造に敏感であることを示唆している。

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Compact Helical SystemHelical system
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