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P: Fachverband Plasmaphysik
P 11: Codes and Modelling
P 11.2: Talk
Wednesday, March 30, 2022, 14:15–14:30, P-H11
Implementation and Validation of Guiding Centre Approximation into ERO2.0 — •Sebastian Rode1, Juri Romazanov1, Dirk Reiser1, Sebastijan Brezinsek1, Christian Linsmeier1, and Alexander Pukhov2 — 1Forschungszentrum Jülich GmbH, Institut für Energie- und Klimaforschung - Plasmaphysik, Partner of the Trilateral Euregio Cluster(TEC), 52425 Jülich, Germany — 2Institut für Theoretische Physik I, Heinrich-Heine-Universität Düsseldorf, Germany
The Monte-Carlo code ERO2.0 uses full orbit resolution to follow impurity particles throughout the plasma volume to determine the local erosion and deposition fluxes on the plasma-facing components of fusion devices. For this work, the theory of guiding centre approximation (GCA) was implemented into ERO2.0, enabling direct comparisons to other transport codes and accelerating the code. First, the implementation of GCA theory into the code is described in detail. Additionally, a hybrid simulation mode for ERO2.0 was developed, in which the advantages of both full orbit resolution and guiding centre approximation are used. The GCA implementation was tested in an inner-code benchmarking, using a plasma background corresponding to a deuterium limiter plasma used in JET pulse #80319. Analysing a multitude of output metrics of the code and comparing them between pure full orbit simulations and hybrid simulations, the quality of the GCA implementation was confirmed while a significant code speed up was measured in large scale simulations.