Speaker
Description
Particle-driven wakefield acceleration (PWFA) promises the generation of high-brightness relativistic beams, as it allows dephasing-free acceleration and the implementation of various cold injection schemes, unlike laser-driven wakefield acceleration (LWFA). To keep the whole accelerator compact, generating the PWFA driver beam via LWFA is a promising concept [1] and the first proof of principle witness beam acceleration was demonstrated a few years ago [2]. Since then, efforts have focused on improving the quality (brightness), stability of the witness beam [3] and overcoming the initial driver energy. To address the first two aspects, various injection schemes have been experimentally tested, including density downramp [4] and plasma photocathode [5]. Additionally, the influence of the driver parameters has been investigated [6]. These studies reveal the significant impact of the driver beam charge on the wakefield generation and evolution, which is crucial for the witness beam acceleration. The presentation will provide an overview of these topics as well as a discussion on the next steps to be taken within the Hybrid Collaboration.
[1] PRL 104.195002 (2010)
[2] NatCommun 12,2895 (2021)
[3] Phxs.Rev.X 12.041016 (2022)
[4] Phys.Rev.Reasearch 3.L042005 (2021)
[5] P. Ufer et al. in preparation
[6] NJP 24.083034 (2022)
