4.4 Article

Verification and application of numerically generated magnetic coordinate systems in gyrokinetics

Journal

PHYSICS OF PLASMAS
Volume 15, Issue 12, Pages -

Publisher

AIP Publishing
DOI: 10.1063/1.3010708

Keywords

plasma instability; plasma magnetohydrodynamics; plasma simulation

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In the context of linear gyrokinetic simulations, an analysis of the application of field-aligned coordinate systems generated numerically from magnetohydrodynamic equilibria is presented. This family of systems allows some flexibility in the choice of the coordinates, and gyrokinetic solvers often differ in this respect. Certain transformations are therefore required in order to compare physics results. Accordingly, benchmarks of a linear microinstability are carried out between two similar gyrokinetic codes. Effort is also put on the verification of the special properties of the generated systems through certain diagnostics.

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