A.G. Peeters F. Rath R. Buchholz Y. Camenen J. Candy F.J. Casson S.R. Grosshauser W.A. Hornsby D. Strintzi A. Weikl
It is shown that ITG turbulence close to the threshold exhibits a long time behaviour, with smaller heat fluxes at later times. This reduction is connected with the slow growth of long wave length zonal flows and, consequently, the numerical dissipation on these flows must be sufficient small. Close to the nonlinear threshold for turbulence generat…
Preprint PublishedW. A. Hornsby P. Migliano R. Buchholz S. Grosshauser A. Weikl D. Zarzoso F. J. Casson E. Poli A. G. Peeters
The non-linear evolution of a magnetic island is studied using the Vlasov gyro-kinetic code GKW. The interaction of electromagnetic turbulence with a self-consistently growing magnetic island, generated by a tearing unstable >0 current profile, is considered. The turbulence is able to seed the magnetic island and bypass the linear growth phase b…
Preprint PublishedF.J. Casson E. Poli C. Angioni R. Buchholz A.G. Peeters
Non-linear local electromagnetic gyrokinetic turbulence simulations of the ITER standard scenario H-mode are presented for the q = 3 / 2 and q = 2 surfaces. The turbulent transport is examined in regions of velocity space characteristic of electrons heated by electron cyclotron waves. Electro- magnetic fluctuations and sub-dominant micro-tearing mo…
Preprint Published