Simulating Gyrokinetic Microinstabilities in Stellarator Geometry with GS2

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 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%.

Submitted to Physics of Plasmas. 9 pages, 14 figures

References in corpus (2)

• Astrophysical Gyrokinetics: Basic Equations and Linear Theory
• Trinity: A Unified Treatment of Turbulence, Transport, and Heating in Magnetized Plasmas

Cited by in corpus (10)

• $\text{stella}$: a mixed implicit-explicit, delta-f gyrokinetic code for general magnetic field configurations
• Collisionless microinstabilities in stellarators II - numerical simulations
• Stellarators close to quasisymmetry
• Gyrokinetic studies of the effect of beta on drift-wave stability in NCSX
• Electrostatic gyrokinetic simulations in Wendelstein 7-X geometry: benchmark between the codes stella and GENE
• Comparing linear ion-temperature-gradient-driven mode stability of the National Compact Stellarator Experiment and a shaped tokamak
• Ion-temperature-gradient stability near the magnetic axis of quasisymmetric stellarators
• Instabilities and turbulence in stellarators from the perspective of global codes
• Quasilinear gyrokinetic theory: A derivation of QuaLiKiz
• Toroidal and slab ETG instability dominance in the linear spectrum of JET-ILW pedestals