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Journal Article

Global electromagnetic turbulence simulations of W7-X-like plasmas with GENE-3D

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Dannert,  Tilman
Max Planck Computing and Data Facility, Max Planck Society;

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Citation

Wilms, F., Navarro, A. B., Merlo, G., Leppin, L., Görler, T., Dannert, T., et al. (2021). Global electromagnetic turbulence simulations of W7-X-like plasmas with GENE-3D. Journal of Plasma Physics, 87(6): 905870604. doi:10.1017/S0022377821001082.


Cite as: https://hdl.handle.net/21.11116/0000-000A-641C-7
Abstract
The GENE-3D code, the global stellarator version of the established GENE framework, has been extended to an electromagnetic gyrokinetic code. This paper outlines the basic structure of the algorithm, highlighting the treatment of the electromagnetic terms. The numerical implementation is verified against the radially global GENE code in linear and nonlinear tokamak simulations, recovering excellent agreement between both codes. As a first application to stellarator plasmas, linear and nonlinear global simulations with kinetic electrons of ion temperature gradient (ITG) turbulence in Wendelstein 7-X were performed, showing a decrease of ITG activity through the introduction of electromagnetic effects via a finite plasma-β. The upgrade makes it possible to study a large variety of new physical scenarios, including kinetic electron and electromagnetic effects, reducing the gap between gyrokinetic models and physically realistic systems.