The Potential of EuPRAXIA@SPARC_LAB for Radiation Based Techniques

INTERNATIONAL COLLABORATION; LEANI, JUAN; ROBLEDO, JOSÉ; SÁNCHEZ, HÉCTOR

Condensed Matter

MDPI

Lugar: Basel; Año: 2019 vol. 4 p. 1 - 19

2410-3896

A proposal for building a Free Electron Laser, EuPRAXIA@SPARC_LAB, at the LaboratoriNazionali di Frascati, is at present under consideration. This FEL facility will provide a uniquecombination of a high brightness GeV-range electron beam generated in a X-band RF linac, a 0.5 PW-classlaser system and the first FEL source driven by a plasma accelerator. The FEL will produce ultra-brightpulses, with up to 1012 photons/pulse, femtosecond timescale and wavelength down to 3 nm, which liesin the so called ?water window?. The experimental activity will be focused on the realization of a plasmadriven short wavelength FEL able to provide high-quality photons for a user beamline. In this paper,we describe the main classes of experiments that will be performed at the facility, including coherentdiffraction imaging, soft X-ray absorption spectroscopy, Raman spectroscopy, Resonant Inelastic X-rayScattering and photofragmentation measurements. These techniques will allow studying a variety ofsamples, both biological and inorganic, providing information about their structure and dynamicalbehavior. In this context, the possibility of inducing changes in samples via pump pulses leading to thestimulation of chemical reactions or the generation of coherent excitations would tremendously benefitfrom pulses in the soft X-ray region. High power synchronized optical lasers and a TeraHertz radiationsource will indeed be made available for THz and pump?probe experiments and a split-and-delay stationwill allow performing XUV-XUV pump?probe experiments