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Effects of compact torus injection on toroidal flow in the STOR-M tokamak

T Onchi, Y Liu, M Dreval, D McColl, S Elgriw, D Liu, T Asai, C Xiao, A Hirose2013年Plasma Physics and Controlled FusionIF 2.2出版社

In compact torus injection (CTI) experiments on the STOR-M tokamak, an ion Doppler spectrometer is installed to observe the effects of CTI on toroidal plasma flows. The intrinsic toroidal flow in ohmic discharges without CTI is sheared with counter plasma current flow in the core region and co-current direction at the periphery. With tangential CTI along the co-current direction, the flow velocity in the core region decreases by more than 5 km s−1, while in the periphery the flow velocity increases by 3–4 km s−1. These data indicate that the observed flow change is due to the injection of toroidal momentum. Density increase and high soft x-ray emission after CTI are observed during the changes in the toroidal flow.

日本語訳

STO R-Mトカマクにおけるコンパクトトーラス入射(CTI)実験では、CTIがトロイダルプラズマ流に及ぼす影響を観測するためにイオンドップラー分光器が設置されている。CTIを伴わないオーミック放電における固有トロイダル流は、コア領域では反電流方向、周辺部では共電流方向というシアを有する。共電流方向の接線方向CTIにより、コア領域の流速は5 km s⁻¹以上減少する一方、周辺部の流速は3〜4 km s⁻¹増加する。これらのデータは、観測された流れの変化がトロイダル運動量の入射によるものであることを示している。トロイダル流の変化中には、CTI後の密度増加と高軟X線放射が観測される。

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