Physics verification tests on a 3 dimensional GPU-driven PIC-code (PIConGPU 3D)

Hübl, Axel; Steiniger, Klaus; Pausch, Richard; Widera, René; Debus, Alexander; Burau, Heiko; Köhler, Alexander; Irman, Arie; Bussmann, Michael

Physics verification tests on a 3 dimensional GPU-driven PIC-code (PIConGPU 3D)

Hübl, A.; Steiniger, K.; Pausch, R.; Widera, R.; Debus, A.; Burau, H.; Köhler, A.; Irman, A.; Bussmann, M.

We present the validation of the key physics features of PIConGPU according to known physical scenarios. For this, we evaluate the evolution of position and energy errors for analytically known particle trajectories and the numerical dispersion of a Gaussian wavepacket over time.
Furthermore, we present a new approximation within the particle push step.
This allows for a comparison of the established CPU/FORTRAN code ILLUMINATION with the GPU/C++ code PIConGPU for selected physical test cases in laser-electron acceleration.

Keywords: particle-in-cell; PIConGPU; CUDA; GPGPU; laser-electron acceleration; laser-plasma interaction; underdense plasma; numerics; HPC; cluster

Poster
International Workshop on Laser-Plasma Interaction at Ultra-High Intensity 2nd Dresden Exchange on Laser-Plasma Interaction Theory ENLITE, 16.-20.04.2012, Dresden, Deutschland

Permalink: https://www.hzdr.de/publications/Publ-17577