Göttingen 2025 – wissenschaftliches Programm
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P: Fachverband Plasmaphysik
P 10: Poster Session I
P 10.24: Poster
Dienstag, 1. April 2025, 16:15–18:15, ZHG Foyer 1. OG
Full-wave Simulations of Helicon Waves for Plasma Wakefield Accelerators — •Luis Carlos Herrera Quesada1, Nils Fahrenkamp2, Stefan Knauer2, Peter Manz2, Günter E.M. Tovar1, and Alf Köhn-Seemann1 — 1IGVP, Universität Stuttgart, Stuttgart, Germany — 2Universität Greifswald, Greifswald, Germany
This study aims to understand the propagation and dissipation of helicon waves in plasma wakefield systems and to investigate the influence of different antenna geometries on the efficiency of helicon wave excitation. Furthermore, the evolution of the radial plasma density gradient on the efficiency of coupling to the helicon wave is investigated.
The 3D finite-difference time-domain (FDTD) code FOCAL enables full-wave simulations and theoretical analysis, which is used to solve Maxwell's equations coupled to the fluid equation of motion for electrons in a cold magnetized plasma. In parallel, a Finite Element Method (FEM) analysis is carried out using the COMSOL Multiphysics code package. As a first step for simulation scenarios, the device parameters and the geometry of VINETA.75, located at the University of Greifswald, are implemented in the numerical model. In addition, external cooperation with the teams of the MAP device at the University of Wisconsin-Madison, and the PROMETHEUS-A and AWAKE experiments at CERN is planned.
Funding of this research by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) - project number 517709182 is gratefully acknowledge.
Keywords: Helicon; Waves; Plasma; Wakefield; Simulations