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Ion-temperature-gradient driven modes in pinch configurations within a linear gyrokinetic particle-in-cell simulation of ions and electrons

Stefan Sorge, Roman Hatzky2002年Plasma Physics and Controlled FusionIF 2.2出版社

The influence of trapped electrons on ion-temperature-gradient driven plasma instabilities is investigated in the bumpy pinch configuration as a simplified model of the Wendelstein 7-X stellarator. For these investigations a gyrokinetic global linear particle-in-cell simulation of the plasma ions and electrons was done with the GYrokinetic Global Linear Equation Solver (GYGLES) code (Fivaz M et al 1998 Comp. Phys. Comm. 111 27, Hatzky R and Fivaz M 1998 Proc. EPS 25th Conf. on Controlled Fusion and Plasma Physics (Prague, 1998) (Petit-Lancy: European Physical Society) p 1804). For this purpose, the code was modified by replacing the adiabatic response of the electrons with a gyrokinetic treatment. The growth rates of the modes considered were found to increase owing to the trapped electrons and the gradient of the electron temperature. However, the effect is small in relation to that of trapped electrons in typical tokamak configurations.

日本語訳

捕捉された電子がイオン温度勾配駆動プラズマ不安定性に及ぼす影響を、Wendelstein 7-X ステラレーターの簡略化モデルとしてのバンピー・ピンチ配位において調査する。この調査のために、プラズマイオンと電子のジャイロ運動論的グローバル粒子シミュレーションを、GYrokinetic Global Linear Equation Solver(GYGLES)コード(Fivaz M ら 1998、Comp. Phys. Comm. 111 27、Hatzky R および Fivaz M 1998、Proc. EPS 25th Conf. on Controlled Fusion and Plasma Physics(プラハ)(Petit-Lancy: European Physical Society)p 1804)を用いて実施した。この目的のため、コードは電子の断熱応答をジャイロ運動論的取り扱いに置き換えることで修正された。検討されたモードの成長率は、捕捉電子と電子温度勾配により増加することが見出された。しかしながら、その効果は、典型的なトカマク配位における捕捉電子の効果と比較すると小さい。

装置

wendelstein-7x中精度(概要文一致)

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GyrokineticParticle-in-cell
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