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Impact of 3D features on ion collisional transport in ITER

A. Bustos, F. Castejón, L.A. Fernández, J. García, V. Martin-Mayor, J.M. Reynolds, R. Seki, J.L. Velasco2010年被引用 7Nuclear FusionIF 3出版社

The influence of magnetic ripple on ion collisional transport in ITER (Shimada et al2007 Progress in the ITER Physics Basis: chapter 1. Overview and summary Nucl. Fusion47 S1) is calculated using the Monte Carlo orbit code ISDEP (Castejón et al2007 Plasma Phys. Control. Fusion49 753). The ripple is introduced as a perturbation to the 2D equilibrium configuration of the device, given by the HELENA code (Huysmans 1991 CP90 Conf. on Computational Physics (Amsterdam, The Netherlands, 1990) (Singapore: World Scientific) p 371), obtaining a 3D configuration. Since the intensity of the ripple can change depending on the design of the test blanket modules that will be introduced in ITER, a scan of the ripple intensity has been performed to study the changes in confinement properties. The main result is that an increase in the perturbation leads to a degradation of the confinement due to an increase in the radial fluxes. The selective ion losses cause modifications in the ion distribution function. In this work most of the computing time has been provided by a new Citizen Supercomputer called Ibercivis.

日本語訳

磁場リップルがITERにおけるイオン衝突輸送に及ぼす影響(Shimada et al 2007 Progress in the ITER Physics Basis: chapter 1. Overview and summary Nucl. Fusion 47 S1)は、モンテカルロ軌道コードISDEP(Castejón et al 2007 Plasma Phys. Control. Fusion 49 753)を用いて計算される。リップルは、HELENAコード(Huysmans 1991 CP90 Conf. on Computational Physics (Amsterdam, The Netherlands, 1990) (Singapore: World Scientific) p 371)によって与えられる2次元平衡配位に対する摂動として導入され、3次元配位が得られる。ITERに導入されるテストブランケットモジュールの設計に応じてリップルの強度が変化し得るため、閉じ込め特性の変化を調べるためにリップル強度のスキャンが実施された。主な結果として、摂動の増大は動径方向フラックスの増加による閉じ込めの劣化をもたらすことが示された。選択的イオン損失はイオン分布関数の変化を引き起こす。本研究では、計算時間の大部分はIbercivisと呼ばれる新しい市民参加型スーパーコンピューティングによって提供された。

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