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

J. McClenaghan | Zendy; Zhihong Lin | Zendy; I. Holod | Zendy; Wenjun Deng | Zendy; Zhixuan Wang | Zendy

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

Author(s) -

J. McClenaghan,

Zhihong Lin,

I. Holod,

Wenjun Deng,

Zhixuan Wang

Publication year - 2014

Publication title -

physics of plasmas

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.75

H-Index - 160

eISSN - 1089-7674

pISSN - 1070-664X

DOI - 10.1063/1.4905073

Subject(s) - physics , toroid , magnetohydrodynamic drive , instability , kink instability , magnetohydrodynamics , plasma , mechanics , computational physics , kinetic energy , current (fluid) , classical mechanics , nuclear physics , plasma instability , thermodynamics

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.

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