Simulations of ion-temperature-gradient modes in helical symmetry
The first simulations of ion temperature gradient (ITG) modes in straight helical configurations are presented. A linear particle-in-cell gyrokinetic global code initially developed for toroidal axisymmetric geometry has been modified to treat the case of helical symmetry. The model is based on gyrokinetic ions, adiabatic electrons and electrostatic quasineutral perturbations. The code simulates the full plasma cross-section. The potential is represented on a magnetic coordinate system and discretized with finite elements. Analytical extraction of the fast poloidal variation is done on a straight field line coordinate, allowing a speedup of one or two orders of magnitude.
Bibliographic Reference: Article: Fusion Theory Proceedings of the Seventh European Fusion Theory Conference, Forschungszentrum Jülich (1998) pp. 139-142
Record Number: 199810838 / Last updated on: 1998-07-20
Original language: en
Available languages: en