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Abstract

Micro-instabilities are widely considered a possible source of anomalous transport in tokamaks. High order finite Larmor radius (FLR) effects have been included in a linear 2D gyrokinetic Particle-In-Cell (PIC) code for the study of the time evolution of electrostatic, quasi-neutral perturbations in realistic tokamak geometries. This has been done using a Pade approximation of Bessel functions in the quasi-neutrality equation. This extends the validity range of our PIC code over previous versions which had FLR effects only up to second order in kappa (perpendicular rho). Trapped electrons dynamics has been modelled using a drift-kinetic approximation. Axisymmetric equilibria are provided by the MHD equilibrium code CHEASE.

Additional information

Authors: BOTTINO A, Centre de Recherches en Physique des Plasmas, EURATOM Association-Confederation Suisse, Ecole Polytechnique Federale de Lausanne (CH);TRAN T.M, Centre de Recherches en Physique des Plasmas, EURATOM Association-Confederation Suisse, Ecole Polytechnique Federale de Lausanne (CH);SAUTER O, Centre de Recherches en Physique des Plasmas, EURATOM Association-Confederation Suisse, Ecole Polytechnique Federale de Lausanne (CH);VACLAVIK J, Centre de Recherches en Physique des Plasmas, EURATOM Association-Confederation Suisse, Ecole Polytechnique Federale de Lausanne (CH);VILLARD L, Centre de Recherches en Physique des Plasmas, EURATOM Association-Confederation Suisse, Ecole Polytechnique Federale de Lausanne (CH)
Bibliographic Reference: An article published in: Theory of Fusion Plasmas (2000), pp.327-332
Record Number: 200013672 / Last updated on: 2001-09-18
Category: PUBLICATION
Original language: en
Available languages: en