Verification of gyrokinetic particle simulation of current-driven instability in fusion plasmas. I. Internal kink mode

McClenaghan, J.; Lin, Z.; Holod, I.; Deng, W.; Wang, Z.

doi:10.1063/1.4905073

Verification of gyrokinetic particle simulation of current-driven instability in fusion plasmas. I. Internal kink mode

Journal Article · Mon Dec 15 04:00:00 EST 2014 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.4905073· OSTI ID:22403364

McClenaghan, J.; Lin, Z.; Holod, I.; Deng, W.; Wang, Z. ^[1]

University of California, Irvine, California 92697 (United States)

The gyrokinetic toroidal code (GTC) capability has been extended for simulating internal kink instability with kinetic effects in toroidal geometry. The global simulation domain covers the magnetic axis, which is necessary for simulating current-driven instabilities. GTC simulation in the fluid limit of the kink modes in cylindrical geometry is verified by benchmarking with a magnetohydrodynamic eigenvalue code. Gyrokinetic simulations of the kink modes in the toroidal geometry find that ion kinetic effects significantly reduce the growth rate even when the banana orbit width is much smaller than the radial width of the perturbed current layer at the mode rational surface.

OSTI ID:: 22403364

Journal Information:: Physics of Plasmas, Journal Name: Physics of Plasmas Journal Issue: 12 Vol. 21; ISSN PHPAEN; ISSN 1070-664X

Country of Publication:: United States

Language:: English

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