Göttingen 2025 – wissenschaftliches Programm
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AKBP: Arbeitskreis Beschleunigerphysik
AKBP 9: Novel Accelerator Concepts III and Hadron Accelerators
AKBP 9.5: Vortrag
Donnerstag, 3. April 2025, 15:00–15:15, ZHG004
More realistic laser-plasma simulations by laser profiles measured via Insight — •Fabia Dietrich1,2, Jessica Tiebel1,2, Richard Pausch1, Thomas Püschel1, Ulrich Schramm1, and Klaus Steiniger3 — 1Helmholtz-Zentrum Dresden-Rossendorf — 2TU Dresden — 3CASUS, Görlitz
Laser-plasma physics is an important field of research with wide-ranging applications such as particle acceleration for medical purposes or inertial confinement fusion. A fundamental challenge in this field is understanding and controlling the complex interaction between high-intensity laser pulses and the plasma, for which Particle-in-Cell (PIC) simulations have become indispensable tools.
A significant limitation in many simulation codes is the assumption of idealized laser conditions, such as perfectly Gaussian beams. This simplification arises from the difficulty in analytically modelling spatio-temporal couplings (STCs) that inevitably influence realistic laser pulses.
To address this discrepancy, we present a method for importing realistic laser field data from INSIGHT measurements into multiple-GPU PIC simulations with PIConGPU. INSIGHT measurements provide complete field information of the laser pulse at the focal position, and therefore allow to create a digital twin of experimental setups. This enables us to investigate in detail the impact of STCs on the performance of laser particle accelerators realized at HZDR. Moreover, this new capability permits the prediction of optimized operation points in upcoming experiments.
Keywords: Particle-in-cell; Laser; Plasma; Spatio-temporal couplings; Simulation