Nonlinear gyrokinetic simulations of ion-temperature-gradient turbulence for the optimized Wendelstein 7-X stellarator

被引：71
作者：
Xanthopoulos, P.
Merz, F.
Goerler, T.
Jenko, F.
机构：
[1] Max Planck Inst Plasma Phys, D-17491 Greifswald, Germany
[2] Max Planck Inst Plasma Phys, D-85748 Garching, Germany
来源：
PHYSICAL REVIEW LETTERS | 2007年 / 99卷 / 03期
关键词：
D O I：
10.1103/PhysRevLett.99.035002
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Ion-temperature-gradient turbulence constitutes a possibly dominant transport mechanism for optimized stellarators, in view of the effective suppression of neoclassical losses characterizing these devices. Nonlinear gyrokinetic simulation results for the Wendelstein 7-X stellarator [G. Grieger , in Proceedings of the IAEA Conference on Plasma Physics and Controlled Nuclear Fusion Research, 1990 (IAEA, Vienna, 1991) Vol. 3, p. 525]-assuming an adiabatic electron response-are presented. Several fundamental features are discussed, including the role of zonal flows for turbulence saturation, the resulting flux-gradient relationship, and the coexistence of ion-temperature-gradient modes with trapped ion modes in the saturated state.
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页数：4
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