It is widely accepted by the international scientific community that a fundamental milestone towards
the realization of a plasma driven future Linear Collider (LC) will be the integration of high gradient
accelerating plasma modules in a short wavelength Free Electron Laser (FEL) user facility. To
this end, in October 2019 the Horizon2020 Design Study EuPRAXIA (European Plasma Research
Accelerator with eXcellence In Applications) will propose the first European Research Infrastructure
that is dedicated to demonstrate usability of plasma accelerators delivering high brightness beams
up to 1-5 GeV for users. In this report we discuss the EuPRAXIA@ SPARC_LAB project, intended
to put forward LNF as host of the EuPRAXIA European Facility. The EuPRAXIA@SPARC_-
LAB facility will equip LNF with a unique combination of a high brightness GeV-range electron
beam generated in a state-of-the-art X-band RF linac, a 0.5 PW-class laser system and the first
5th generation light source driven by a plasma accelerator. These unique features will enable at
LNF new promising synergies between fundamental physics oriented research and high social
impact applications, especially in the domain of Key Enabling Technologies (KET) and Smart
Specialisation Strategies (S3).