In this paper, we report results of simulations, in the framework of both EuPRAXIA \cite{Walk2017} and EuPRAXIA@SPARC\_LAB \cite{Ferr2017} projects, aimed at delivering a high brightness electron bunch for driving a Free Electron Laser (FEL) by employing a plasma post acceleration scheme. The boosting plasma wave is driven by a tens of \SI{}{\tera\watt} class laser and doubles the energy of an externally injected beam up to \GeV{1}. The injected bunch is simulated starting from a photoinjector, matched to plasma, boosted and finally matched to an undulator, where its ability to produce FEL radiation is verified to yield O(\nume11) photons per shot at \nm{2.7}.
@article{arxiv.1802.06556,
title = {Plasma boosted electron beams for driving Free Electron Lasers},
author = {A. R. Rossi and V. Petrillo and A. Bacci and E. Chiadroni and A. Cianchi and M. Ferrario and A. Giribono and A. Marocchino and M. Rossetti Conti and L. Serafini and C. Vaccarezza},
journal= {arXiv preprint arXiv:1802.06556},
year = {2018}
}