Erlangen 2026 – wissenschaftliches Programm
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P: Fachverband Plasmaphysik
P 16: Poster Session Plasma Physics
P 16.67: Poster
Donnerstag, 19. März 2026, 13:45–15:45, Redoutensaal
Study of finite Larmor radius physics with the gyrokinetic turbulence code GENE-X — •Jose Angel Capitan Garcia1, Philipp Ulbl1, Baptiste J. Frei1, and Frank Jenko1,2 — 1Max-Planck-Institut für Plasmaphysik, Boltzmannstraße 2, 85748 Garching bei München, Deutschland — 2University of Texas at Austin, Austin, Texas 78712, USA
Turbulence is the primary driver of transport losses in magnetically confined plasmas, particularly in tokamaks and optimized stellarators, where it significantly impacts confinement. To optimize energy confinement in a reactor, minimizing turbulent losses is crucial. Achieving a deeper understanding of turbulence in the plasma core as well as the edge and scrape-off-layer (SOL) is essential to this goal.
The GENE-X code, an Eulerian solver of the full-f, collisional, electromagnetic gyrokinetic Vlasov equation, was developed to capture the physics of turbulence in the plasma edge and SOL. Until now, however, it relied on a long-wavelength model, limiting its ability to describe core turbulence and regions with steep gradients, where finite Larmor radius (FLR) effects become essential to capture the physics accurately.
In this work, we present an extension of GENE-X that incorporates FLR effects through Padé-approximated gyro-averaging operators. We will discuss the theoretical basis and first simulations investigating the impact of FLR corrections. This development enables GENE-X gyrokinetic simulations to extend across the entire plasma volume, from edge to core, for the first time in the code.
Keywords: flr; larmor; pade; gyrokinetic; genex