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.
引用
收藏
页数：4
相关论文
共 19 条
[11]   Stellarator turbulence at electron gyroradius scales [J].
Jenko, F ;
Kendl, A .
NEW JOURNAL OF PHYSICS, 2002, 4 :35.1-35.12
[12]   Radial and zonal modes in hyperfine-scale stellarator turbulence [J].
Jenko, F ;
Kendl, A .
PHYSICS OF PLASMAS, 2002, 9 (10) :4103-4106
[13]   Effects of collisional zonal flow damping on turbulent transport [J].
Lin, Z ;
Hahm, TS ;
Lee, WW ;
Tang, WM ;
Diamond, PH .
PHYSICAL REVIEW LETTERS, 1999, 83 (18) :3645-3648
[14]   STABLE STELLARATORS WITH MEDIUM-BETA AND ASPECT RATIO [J].
NUHRENBERG, J ;
ZILLE, R .
PHYSICS LETTERS A, 1986, 114 (03) :129-132
[15]   Comparison of microinstability properties for stellarator magnetic geometries [J].
Rewoldt, G ;
Ku, LP ;
Tang, WM .
PHYSICS OF PLASMAS, 2005, 12 (10) :1-10
[16]   On the relation between secondary and modulational instabilities [J].
Strintzi, D. ;
Jenko, F. .
PHYSICS OF PLASMAS, 2007, 14 (04)
[17]   Full radius linear and nonlinear gyrokinetic simulations for tokamaks and stellarators:: zonal flows, applied E x B flows, trapped electrons and finite beta [J].
Villard, L ;
Allfrey, SJ ;
Bottino, A ;
Brunetti, M ;
Falchetto, GL ;
Grandgirard, V ;
Hatzky, R ;
Nührenberg, J ;
Peeters, AG ;
Sauter, O ;
Sorge, S ;
Vaclavik, J .
NUCLEAR FUSION, 2004, 44 (01) :172-180
[18]   Clebsch-type coordinates for nonlinear gyrokinetics in generic toroidal configurations [J].
Xanthopoulos, P. ;
Jenko, F. .
PHYSICS OF PLASMAS, 2006, 13 (09)
[19]   Gyrokinetic analysis of linear microinstabilities for the stellarator Wendelstein 7-X [J].
Xanthopoulos, P. ;
Jenko, F. .
PHYSICS OF PLASMAS, 2007, 14 (04)
12