Göttingen 2025 – scientific programme
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AKBP: Arbeitskreis Beschleunigerphysik
AKBP 7: Novel Accelerator Concepts II and FELs
AKBP 7.3: Talk
Wednesday, April 2, 2025, 16:45–17:00, ZHG004
Hydrodynamic simulations of plasma sources for wakefield acceleration — •Mathis Mewes1, Gregory Boyle2, Harry Jones1, Rob Shalloo1, and Maxence Thévenet1 — 1DESY, Hamburg, Germany — 2James Cook University, Townsville, Australia
With the recent advancements in plasma wakefield acceleration (PWA), it becomes more important to fully understand the dynamics of plasma sources. Some of the critical questions surround discharge control, laser guiding and cooling. Numerical simulations can provide detailed insight into the relevant dynamics.
Particle in Cell simulations work well in the kinetic regime of a wakefield, which occurs on femtosecond time scale, but they are impractical for long term plasma evolution. Instead, (Magneto-)Hydrodynamic simulations can describe thermalized plasma at viable computational costs.
In this work, we propose a quasi-neutral single-fluid plasma model for plasma sources. It uses two temperatures and evolves the composition via collisional reactions and diffusion. The model is implemented in the COMSOL multiphysics software.
We will present and examine simulation results and benchmarks for laser ionized and discharge plasma sources utilized in plasma wakefield accelerators.
Keywords: Wakefield; Hydrodynamic; Plasma; Discharge; Simulation