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Complete multi-field characterization of the geodesic acoustic mode in the TCV tokamak

C A de Meijere, S Coda, Z Huang, L Vermare, T Vernay, V Vuille, S Brunner, J Dominski, P Hennequin, A Krämer-Flecken2014年Plasma Physics and Controlled FusionIF 2.2出版社

The geodesic acoustic mode (GAM) is a coherently oscillating zonal flow that may regulate turbulence in toroidal plasmas. Uniquely, the complete poloidal and toroidal structure of the magnetic component of the turbulence-driven GAM has been mapped in the TCV tokamak. Radially localized measurements of the fluctuating density, ECE radiative temperature and poloidal flow show that the GAM is a fully coherent, radially propagating wave. These observations are consistent with electrostatic, gyrokinetic simulations.

日本語訳

測地音響モード(GAM)は、トロイダルプラズマにおける乱流を制御し得るコヒーレントに振動する帯状流である。TCVトカマクにおいて、乱流駆動GAMの磁気成分のポロイダルおよびトロイダル構造が、完全にマッピングされたことは特筆に値する。変動密度、ECE放射温度、およびポロイダル流の径方向局所測定により、GAMが完全にコヒーレントで径方向に伝播する波動であることが示された。これらの観測結果は、静電ジャイロ運動論シミュレーションと一致する。

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TCVAcoustic modeGeodesic acoustic mode
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