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P: Fachverband Plasmaphysik
P 16: Poster Session Plasma Physics
P 16.97: Poster
Thursday, March 19, 2026, 13:45–15:45, Redoutensaal
Towards the Application of the Gyrokinetic Code GENE-X to Tokamak and Stellarator Scrape-Off Layer Turbulence — •Yantong Tao1, Philipp Ulbl1, and Frank Jenko1,2 — 1Max Planck Institute for Plasma Physics, Boltzmannstraße 2, 85748 Garching, Germany — 2University of Texas at Austin, Austin, TX 78712, USA
Predicting heat loads in the scrape-off layer (SOL) is a major challenge for future fusion divertors, largely due to the complex interplay between turbulence and boundary plasma physics. Gyrokinetic simulations provide a powerful tool for investigating SOL turbulence; however, their predictive capability critically depends on the incorporation of plasma sheath physics at the divertor targets. The plasma sheath plays a key role in regulating turbulent transport and heat exhaust, and its proper treatment is therefore crucial for reliable heat flux predictions and divertor design.
In this work, we will apply sheath boundary conditions to the full-f gyrokinetic turbulence code GENE-X in full tokamak and stellarator geometry, and present some preliminary results. Since the sheath structure cannot be fully resolved in gyrokinetic simulations, we start from a reduced sheath model that captures the essential physics while omitting the sheath complexity at the same time. Then we will study the impact of sheath boundary conditions and compare the results with TCV-X21 validation case.
Keywords: plasma sheath; gyrokinetic simulation; heat exhaust; scrape-off layer; turbulence