Dresden 2020 – wissenschaftliches Programm
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AKBP 10.2: Vortrag
Dienstag, 17. März 2020, 16:45–17:00, HSZ 301
Simulating the hybrid LPWFA scheme - a millimeter-sized plasma wakefield accelerator — •Richard Pausch1, Thomas Kurz1,2, Thomas Heinemann3,6, Jourjen Couperus Cabadag1, Olena Kononenko5, Susann Schöbel1,2, Ralf Assmann3, Michael Bussmann1,7, Klaus Steinger1, Sebastian Corde5, Andreas Döpp4, Bernhard Hidding6, Stefan Karsch4, Ulrich Schramm1,2, Alberto Martinez de la Ossa3, Arie Irmann1, and Alexander Debus1 — 1HZDR — 2TU Dresden — 3DESY — 4LMU München — 5LOA — 6University of Strathclyde — 7CASUS
The hybrid LPWFA acceleration scheme combines laser- (LWFA) with plasma-wakefield acceleration (PWFA) and has the potential to provide an ultra-compact, high-brightness electron source. Witness bunch acceleration within this scheme was recently demonstrated at HZDR. This talk presents the latest start-to-end simulations, that accompanied the experimental campaign, and provided fundamental insights into the injection and acceleration process of this novel, compact accelerator. With recent advances in simulation capabilities, significantly enhanced agreement between theoretical predictions and experimental measurements could be achieved by resembling the experiment to a very high degree using the 3D3V particle-in-cell code PIConGPU. These simulations provide insight into the plasma dynamics, otherwise inaccessible in experiments. Various intrinsic, as well as controllable injection mechanisms, will be presented in detail. Furthermore, we will discuss the challenges in maintaining numerical stability and experimental comparability with these long-duration simulations.