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Title: Electromagnetic total-f algorithm for gyrokinetic particle-in-cell simulations of boundary plasma in XGC
Contributors: Hager, Robert
Ku, Seung-Hoe
Sharma, Amil Y.
Churchill, Randy Michael
Chang, C. S.
Scheinberg, Aaron
U.S. Department of Energy, contract no. DE-AC02–09CH11466, DE-AC05-00OR22725, DE-AC02-06CH11357, DE-AC02-05CH11231
Keywords: Tokamak
Magnetic confinement fusion
Issue Date: 21-Nov-2022
Publisher: Princeton Plasma Physics Laboratory, Theory Department
Citation: Robert Hager, S. Ku, A. Y. Sharma, R. M. Churchill, C. S. Chang, A. Scheinberg, 2022, Electromagnetic total-f algorithm for gyrokinetic particle-in-cell simulations of boundary plasma in XGC, Princeton Plasma Physics Laboratory, Princeton University DataSpace, ARK# 88435/dsp015425kd34n
Related Publication: Physics of Plasmas, 2022, 29, 11, 112308
Abstract: The simplified delta-f mixed-variable/pull-back electromagnetic simulation algorithm implemented in XGC for core plasma simulations by Cole et al. [Phys. Plasmas 28, 034501 (2021)] has been generalized to a total-f electromagnetic algorithm that can include, for the first time, the boundary plasma in diverted magnetic geometry with neutral particle recycling, turbulence and neoclassical physics. The delta-f mixed-variable/pull-back electromagnetic implementation is based on the pioneering work by Kleiber and Mischenko et al. [Kleiber et al., Phys. Plasmas 23, 032501 (2016); Mishchenko et al., Comput. Phys. Commun. 238, 194 (2019)]. An electromagnetic demonstration simulation is performed in a DIII-D-like, H-mode boundary plasma, including a corresponding comparative electrostatic simulation, which confirms that the electromagnetic simulation is necessary for a higher fidelity understanding of the electron particle and heat transport even at the low-beta pedestal foot in the vicinity of the magnetic separatrix.
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