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Abstract

A modified version of the global gyrokinetic PIC code developed in [1,2] aimed at the investigation of Ion-Temperature-Gradient (ITG) modes in 3D magnetic configurations is presented. A new 3D parallel iterative solver of the gyrokinetic Poisson equation was implemented using the PETSc library [3]. This equation, discretized with a finite-element method, is now solved in the PEST_1 magnetic system of co-ordinates (s o) [4], which are provided together with the equilibrium magnetic field by the equilibrium code VMEC [5].
The new version has been successfully compared for axisymmetric cases. Benchmarks show a significant increase of the required computation time (40%) over the 2D version due mainly to the particles, the new solver remaining unexpectedly fast. Preliminary results are also shown with helical configurations.

Additional information

Authors: JOST G, Centre de Recherches en Physique des Plasmas Ecole Polytechnique Federale (CH);TRAN T M, Centre de Recherches en Physique des Plasmas Ecole Polytechnique Federale (CH);APPERT K, Centre de Recherches en Physique des Plasmas Ecole Polytechnique Federale (CH);COOPER W A, Centre de Recherches en Physique des Plasmas Ecole Polytechnique Federale (CH);VILLARD L, Centre de Recherches en Physique des Plasmas Ecole Polytechnique Federale (CH)
Bibliographic Reference: Article: Papers on Theory of Fusion Plasmas, (1998)
Record Number: 199910432 / Last updated on: 1999-03-19
Category: PUBLICATION
Original language: en
Available languages: en
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