HiPACE++: a portable, 3D quasi-static Particle-in-Cell code

Modeling plasma wakefield accelerators is a computationally challenging task. Using cost-reducing algorithms like the quasi-static approximation allows for efficient modeling of demanding plasma wakefield accelerator scenarios. In this work, we present the latest highlights of the performance-portable, 3D quasi-static particle-in-cell (PIC) code HiPACE++ [1]. The code adopts modern HPC practices like a performance-portability layer, continuous integration, standard I/O formats, and is open-source (https://github.com/Hi-PACE/hipace). HiPACE++ demonstrates orders of magnitude speed-up on modern GPU-equipped supercomputers compared to its CPU-only predecessor HiPACE. Therefore, HiPACE++ enables fast and accurate modeling of challenging simulation settings, including certain positron acceleration schemes or the proton-beam-driven accelerator AWAKE [2].

Additionally, we report on the latest upgrades, including an extension of the explicit solver for quasi-static PIC [3] to model ion motion.