Greifswald 2024 – wissenschaftliches Programm
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P: Fachverband Plasmaphysik
P 12: Poster II
P 12.4: Poster
Dienstag, 27. Februar 2024, 16:30–18:30, ELP 6: Foyer
Dynamics of a pellet produced plasmoid in a stellarator — •Carl Wilhelm Rogge1,3, Ksenia Aleynikova1, Pavel Aleynikov1, Rohan Ramasamy2, Matthias Hoelzl2, and Per Helander1,3 — 1Max-Planck-Institut für Plasmaphysik, 17491 Greifswald, Germany — 2Max-Planck-Institut für Plasmaphysik, 85748 Garching, Germany — 3University of Greifswald
Pellet injection will play a critical role in refueling future tokamak and stellarator reactors. Although pellet plasmoid physics has been extensively studied in tokamak magnetic geometries, understanding in stellarator geometries remains less comprehensive. This gap partially arises due to the lack of numerical tools capable of accurately describing the 3D physics effects with sufficient spatial and temporal resolutions, covering extensive time spans that encompass the various timescales of key physical effects. The non-axisymmetry of the equilibrium field in stellarators increases the complexity of numerical analysis.
However, recent advancements in the stellarator extension of the JOREK non-linear 3D MHD code, which employs a reduced MHD model for stellarator geometry, show significant promise in addressing this challenge. Consequently, this project aims to leverage JOREK to gain a deeper understanding of pellet plasmoid dynamics in stellarator geometries. This poster offers an overview of pellet physics, employed physics and numerical models, and outlines future research inquiries.