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AKBP: Arbeitskreis Beschleunigerphysik

AKBP 1: New Accelerator Concepts 1

AKBP 1.3: Vortrag

Montag, 28. März 2022, 14:30–14:45, AKBP-H13

Simulating hybrid laser-plasma wakefield accelerators using PIConGPU — •R. Pausch¹, J. P. Couperus¹, S. Schöbel^1,2, S. Bastrakov¹, Y.-Y. Chang¹, S. Corde⁴, H. Ding^5,6, A. Döpp^5,6, F. M. Foester⁵, M. Gilljohann^4,5,6, F. Haberstroh⁵, T. Heinemann^7,8, B. Hidding⁸, S. Karsch^5,6, A. Koehler¹, O. Kononenko⁴, A. Knetsch⁴, T. Kurz^1,2, A. Martines de las Ossa⁷, A. Nutter⁸, G. Raj⁴, K. Steiniger¹, U. Schramm^1,2, P. Ufer^1,2, R. Widera¹, A. Irman¹, M. Bussmann^3,1, and A. Debus¹ — ¹HZDR — ²TU Dresden — ³CASUS — ⁴LOA — ⁵LMU — ⁶MPQ — ⁷DESY — ⁸University of Strathclyde

An LPWFA accelerator uses electrons from a laser wakefield accelerator stage to drive a second plasma wakefield accelerator stage. This approach makes it possible to downscale PWFAs from kilometer-sized facilities to tabletop experiments and makes the improved beam quality of PWFAs available to LWFA laboratories. The experimental realization of the hybrid accelerator at HZDR was accompanied by a simulation campaign with the fully GPU accelerated, 3D3V particle-in-cell PIConGPU. Running simulations on modern GPUs allowed reducing simulation time while modeling different experimental settings in a fully three-dimensional setup. The latter enabled studying the influence of tilted shock fronts and few-cycle probes, among others. In this talk, we will not only introduce the general concept but also discuss some of the recent results obtained using particle-in-cell simulations. Moreover, the technical innovations in PIConGPU that have enabled these new types of simulations will also be briefly addressed.