Pullback transformation in gyrokinetic electromagnetic simulations
Alexey Mishchenko, Axel K\"onies, Ralf Kleiber, Michael Cole
TL;DR
This paper introduces a modified scheme for gyrokinetic electromagnetic simulations, demonstrating improved accuracy and successful application to tokamak and stellarator configurations.
Contribution
A slight modification to the simulation scheme significantly enhances the accuracy of gyrokinetic electromagnetic simulations in toroidal devices.
Findings
Improved simulation accuracy for Toroidal Alfvén Eigenmodes
Successful simulation of electromagnetic drift modes in stellarators
Verification of the new scheme's effectiveness
Abstract
It is shown that a considerable improvement in the global gyrokinetic electromagnetic simulations can be achieved by a slight modification of the simulation scheme. The new scheme is verified, simulating a Toroidal Alfv\'en Eigenmode in tokamak geometry at low perpendicular mode numbers, the so-called "MHD limit". Also, an electromagnetic drift mode has been successfully simulated in a stellarator.
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