The SPARC_LAB femtosecond synchronization for electron and photon pulsed beams

M. Bellaveglia; A. Gallo; L. Piersanti; R. Pompili; G. Gatti; M. P. Anania; M. Petrarca; F. Villa; E. Chiadroni; A. Biagioni; A. Mostacci

doi:10.1117/12.2185103

12 May 2015 The SPARC_LAB femtosecond synchronization for electron and photon pulsed beams

M. Bellaveglia, A. Gallo, L. Piersanti, R. Pompili, G. Gatti, M. P. Anania, M. Petrarca, F. Villa, E. Chiadroni, A. Biagioni, A. Mostacci

Author Affiliations +

Proceedings Volume 9512, Advances in X-ray Free-Electron Lasers Instrumentation III; 95120V (2015) https://doi.org/10.1117/12.2185103
Event: SPIE Optics + Optoelectronics, 2015, Prague, Czech Republic

Abstract

The SPARC LAB complex hosts a 150 MeV electron photo-injector equipped with an undulator for FEL production (SPARC) together with a high power TW laser (FLAME). Recently the synchronization system reached the performance of < 100 fs_RMS relative jitter between lasers, electron beam and RF accelerating fields. This matches the requirements for next future experiments: (i) the production of X-rays by means of Thomson scattering (first collisions achieved in 2014) and (ii) the particle driven PWFA experiment by means of multiple electron bunches. We report about the measurements taken during the machine operation using BAMs (Bunch Arrival Monitors) and EOS (Electro-Optical Sampling) system. A new R and D activity concerning the LWFA using the external injection of electron bunches in a plasma generated by the FLAME laser pulse is under design. The upgrade of the synchronization system is under way to guarantee the < 30 fs RMS jitter required specification. It foresees the transition from electrical to optical architecture that mainly affects the reference signal distribution and the time of arrival detection performances. The new system architecture is presented together with the related experimental data.

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M. Bellaveglia, A. Gallo, L. Piersanti, R. Pompili, G. Gatti, M. P. Anania, M. Petrarca, F. Villa, E. Chiadroni, A. Biagioni, and A. Mostacci "The SPARC_LAB femtosecond synchronization for electron and photon pulsed beams", Proc. SPIE 9512, Advances in X-ray Free-Electron Lasers Instrumentation III, 95120V (12 May 2015); https://doi.org/10.1117/12.2185103

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