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Title: Verification of the global gyrokinetic stellarator code XGC-S for linear ion temperature gradient driven modes
Contributors: Cole M
Hager R
Moritaka T
Dominski J
Kleiber R
Ku S
Lazerson S
Riemann J
Chang C
U. S. Department of Energy
Issue Date: Aug-2019
Publisher: Princeton Plasma Physics Laboratory, Princeton University
Related Publication: Physics of Plasmas
Abstract: XGC (X-point Gyrokinetic Code) is a whole-volume, total-f gyrokinetic particle-in-cell code developed for modelling tokamaks.In recent work, XGC has been extended to model more general 3D toroidal magnetic configurations, such as stellarators.These improvements have resulted in the XGC-S version.In this paper, XGC-S is benchmarked in the reduced delta-f limit for linear electrostatic ion temperature gradient-driven microinstabilities, which can underlie turbulent transport in stellarators.An initial benchmark of XGC-S in tokamak geometry shows good agreement with the XGC1, ORB5, and global GENE codes.A benchmark between XGC-S and the EUTERPE global gyrokinetic code for stellarators has also been performed, this time in geometry of the optimised stellarator Wendelstein 7-X.Good agreement has been found for the mode number spectrum, mode structure, and growth rate.
Appears in Collections:Theory and Computation

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