Simulation of Ion-Temperature-Gradient-Driven Instabilities in Axisymmetric and Helical Configurations
ITG instabilities are now commonly held responsible for turbulence giving rise to anomalous ion heat transport in the core of tokamaks. As collisional transport has been optimized in modern stellarators such as W7X, ITG turbulence could become the dominant transport mechanism in these devices. We therefore started a program with the long-term goal of modelling global microi-nstabilities in various magnetic configurations. We simulate the time-evolution of a plasma modelled by gyrokinetic ions and adiabatic electrons; we use a finite element formulation of the alpha-f Particle-In-Cell method in magnetic coordinates, which provides very good numerical convergence.
Bibliographic Reference: Article: Proceedings Vol I of 1998 International Congress on Plasma Physics 25th EPS Conference on Controlled Fusion and Plasma Physics, (1998)
Record Number: 199910926 / Last updated on: 1999-07-05
Original language: en
Available languages: en