Efficient Numerical Modeling of Plasma-Wakefield Accelerators with the Quasi-Static Particle-In-Cell Code HiPACE

We present the quasi-static PIC code HiPACE, which allows for order-of-magnitudespeedup for a variety of problems in PWFA. In addition, simulation results for theexperiments FLASHForward at DESY and E215 at FACET, performed in a hybridapproach with OSIRIS and HiPACE will be shown.Summary:Fully explicit 3D particle-in-cell (PIC) modeling of plasma-wakefield accelerators (PWFA) incentimeter to meter-scale modules is computationally demanding owing to the largedisparity of length and time scales, and thus, not suitable for extensive parameter scans orcomprehensive analyses. We present the three-dimensional quasi-static PIC codeHiPACE (Highly efficient Plasma ACcelerator Emulation) which emulates typical problemsin PWFA with high computational efficiency while retaining the physical fidelity.The physical basis, numerical implementation, computational framework and parallelperformance of this code will be discussed.In addition, simulation results on the PWFA experiments FLASHForward at DESY andE215 at FACET will be shown. These studies are performed in a hybrid approach by theuse of the fully explicit PIC code OSIRIS and the quasi-static PIC code HiPACE, exploitingthe fact that beams can consistently be imported into HiPACE during their propagation inplasmas. This allows for the investigation of electron-injection techniques and parameterscans in 3D geometries with ~10 cm - 1 m long propagation distances