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Proposing Institution

Max-Planck Institut für Quantenoptik, Abteilung Attosekundenphysik
Project Manager

Dr. Andreas Döpp
Am Coulombwall 1
85748 Garching
Abstract
Beam-driven wakefield acceleration - also known as plasma wakefield acceleration (PWFA) - is a main candidate for future high-gradient (>1GV/m), energy-frontier (> 1 TeV) accelerators. For efficient wave excitation, PWFA requires a particle beam driver which has a density comparable or higher than the background plasma and a bunch length of the order of the plasma wavelength. These parameters are challenging to reach with conventional accelerator technology and, so far, research on PWFA has been restricted to few installations around the world.However, it has been pointed out that that electron beams from a laser wakefield accelerator (LWFA) can meet the requirements for PWFA, resulting in a configuration referred to as hybrid wakefield acceleration. Laser facilities could therefore help to model the physics of PWFA and explore entirely new concepts such as Trojan horse injection for ultralow emittance beams.During recent experiments, we have for the first time reached the PWFA regime and using a few-cycle probe, we could study plasma dynamics both on the femtosecond and picosecond scale. But due to the novelty of these results, the interpretation of the measurements requires extensive modeling. We therefore propose an extensive simulation program based on the latest version of the particle-in-cell (PIC) code OSIRIS.In future experiments with multi-PW lasers, hybrid acceleration could even become a viable option to generation multi-GeV electron beams and high intensity secondary radiation. We plan to numerically investigate the potential of those schemes, together with other new acceleration strategies and injection methods.

Impressum, Conny Wendler