Simulation of ion-temperature-gradient-driven instabilities in axisymmetric and helical configurations
Ion-temperature-gradient (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. Therefore a programme was started with the long-term goal of modelling global microinstabilities in various magnetic configurations. The time-evolution of a plasma was simulated modelled by gyrokinetic ions and adiabatic electrons; a finite element formulation of the delta-f Particle-In-Cell method in magnetic coordinates was used, which provides very good numerical convergence.
Bibliographic Reference: Article: 1998 International Congress on Plasma Physics, 25th EPS Conference on Controlled Fusion and Plasma Physics, Prague (CZ), June 29 � July 3, 1998
Record Number: 199811267 / Last updated on: 1998-10-27
Original language: en
Available languages: en