Zonal Flow Dynamics and Control of Turbulent Transport in Stellarators

被引：34
|
作者：
Xanthopoulos, P. [1 ]
Mischchenko, A. [1 ]
Helander, P. [1 ]
Sugama, H. [2 ]
Watanabe, T. -H. [2 ]
机构：
[1] Max Planck Inst Plasma Phys, Teilinst Greifswald, D-17491 Greifswald, Germany
[2] Natl Inst Nat Sci, Natl Inst Fus Sci, Grad Univ Adv Studies, Toki, Gifu 5095292, Japan
来源：
PHYSICAL REVIEW LETTERS | 2011年 / 107卷 / 24期
关键词：
TEMPERATURE-GRADIENT TURBULENCE; HELICAL SYSTEMS; DRIVEN;
D O I：
10.1103/PhysRevLett.107.245002
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The relation between magnetic geometry and the level of ion-temperature-gradient (ITG) driven turbulence in stellarators is explored through gyrokinetic theory and direct linear and nonlinear simulations. It is found that the ITG radial heat flux is sensitive to details of the magnetic configuration that can be understood in terms of the linear behavior of zonal flows. The results throw light on the question of how the optimization of neoclassical confinement is related to the reduction of turbulence.
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页数：4
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