Simulating Gyrokinetic Microinstabilities in Stellarator Geometry with GS2

Details Simulating Gyrokinetic Microinstabilities in Stellarator Geometry with GS2 Simulating Gyrokinetic Microinstabilities in Stellarator Geometry with GS2

2011-09-21

arxiv.org/abs/1109.4558v1

Physics

Plasma Physics

Submitted to Physics of Plasmas. 9 pages, 14 figures

Scientific paper

The nonlinear gyrokinetic code GS2 has been extended to treat non-axisymmetric stellarator geometry. Electromagnetic perturbations and multiple trapped particle regions are allowed. Here, linear, collisionless, electrostatic simulations of the quasi-axisymmetric, three-field period National Compact Stellarator Experiment (NCSX) design QAS3-C82 have been successfully benchmarked against the eigenvalue code FULL. Quantitatively, the linear stability calculations of GS2 and FULL agree to within ~10%.

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