Simulating Gyrokinetic Microinstabilities in Stellarator Geometry with GS2
Authors: J.A. Baumgaertel, E.A. Belli, W. Dorland, W. Guttenfelder G.W. Hammett, D.R. Mikkelsen, G. Rewoldt, W.M. Tang, and P. Xanthopoulos
Abstract:
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 quasiaxisymmetric,
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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Submitted to: Physics of Plasmas, (October, 2011)
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