Mainz 2022 – scientific programme

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P: Fachverband Plasmaphysik

P 9: Poster I

P 9.42: Poster

Tuesday, March 29, 2022, 16:00–17:30, P

Accelerating positron rings in a two-fold plasma column — •Lars Reichwein¹, Anton Golovanov², Igor Kostyukov², and Alexander Pukhov¹ — ¹Institut für Theoretische Physik I, Heinrich-Heine-Universität Düsseldorf, Düsseldorf, Germany — ²Institute of Applied Physics RAS, Nizhny Novgorod, Russia

We present a setup consisting of an electron driver and a short laser pulse which create a two-fold plasma column structure [1]. The obtained laser-augmented blowout allows for the stable acceleration of positron rings over long distances even when the driving beam's evolution is considered. The scheme is studied numerically by means of particle-in-cell simulations. Further, we derive expressions for the accelerating and focusing fields analytically and show that the witness bunch is being accelerated along equilibrium lines in the wakefield structure.

[1] L. Reichwein et al., arXiv:2110.05226v2 (2021)