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Electron cyclotron current drive and suprathermal electron dynamics in the TCV tokamak

S. Coda, S. Alberti, P. Blanchard, T.P. Goodman, M.A. Henderson, P. Nikkola, Y. Peysson, O. Sauter2003年被引用 41Nuclear FusionIF 3出版社

Electron cyclotron current drive (ECCD) is an important prospective tool for tailoring the current profile in next-step devices. To fill the remaining gaps between ECCD theory and experiment, especially in the efficiency and localization of current drive, a better understanding of the physics of suprathermal electrons appears necessary. In TCV, the fast electron population is diagnosed by a multichordal, spectrometric hard x-ray camera and by a high-field side electron cyclotron emission radiometer. The main modelling tool is the quasilinear Fokker–Planck code CQL3D, which is equipped with a radial particle transport model. Systematic studies of fast electron dynamics have been performed in TCV with modulated or pulsed electron cyclotron power, followed by coherent averaging, in order to identify the roles of collisional relaxation and radial transport in the dynamics of the suprathermal population. A consistent picture is emerging from experiment and modelling, pointing to the crucial role of the radial transport of suprathermal electrons in the physics of ECCD.

日本語訳

電子サイクロトロン電流駆動(ECCD)は、次世代装置における電流分布を整形するための重要な将来ツールである。ECCDと実験の間に残るギャップ、特に電流駆動の効率と局在性に関するギャップを埋めるためには、超熱電子の物理のより深い理解が必要であると思われる。TCVにおいて、高速電子集団は、多弦スペクトロメトリック硬X線カメラと高磁場側電子サイクロトロン放射計によって診断される。主要なモデリングツールは、動径方向粒子輸送モデルを備えた準線形フォッカー・プランクコードCQL3Dである。TCVでは、超熱電子集団のダイナミクスにおける衝突緩和と動径方向輸送の役割を特定するために、変調またはパルス状の電子サイクロトロン出力を用いた系統的な研究が、コヒーレント平均化を伴って実施されてきた。実験とモデリングから一貫した描像が得られつつあり、ECCDの物理における超熱電子の動径方向輸送の決定的な役割が指し示されている。

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Current driveTCVElectron cyclotron current drive
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