Direct measurement of phase space evolution in the sparc high brightness photoinjector

E. Chiadroni, D. Alesini, A. Bacci, M. Bellaveglia, R. Boni, M. Boscolo, M. Castellano, L. Catani, S. Cialdi, A. Cianchi, A. Clozza, L. Cultrera, G. Di Pirro, A. Drago, A. Esposito, M. Ferrario, L. Ficcadenti, D. Filippetto, V. Fusco, A. GalloG. Gatti, A. Ghigo, L. Giannessi, M. Incurvati, C. Ligi, M. Migliorati, A. Mostacci, P. Musumeci, E. Pace, L. Palumbo, L. Pellegrino, M. Petrarca, M. Quattromini, R. Ricci, C. Ronsivalle, J. Rosenzweig, A.R. Rossi, C. Sanelli, L. Serafini, M. Serio, F. Sgamma, B. Spataro, F. Tazzioli, S. Tomassini, C. Vaccarezza, S. Vescovi, C. Vicario

Research output: Contribution to conferencePaper


The characterization of the transverse phase space for high charge density relativistic electron beams is a fundamental requirement in many particle accelerator facilities, in particular those devoted to fourth-generation synchrotron radiation sources, such as SASE FEL. The main purpose of the SPARC initial phase was the commissioning of the RF photoinjector At this regard, the evolution of the phase space has been fully characterized by means of the emittance meter diagnostics tool, placed in the drift after the gun exit. The large amount of collected data has allowed for the first time a detailed reconstruction of the transverse phase space evolution downstream the RF, giving evidences of the emittance compensation process as predicted by theory and simulations. In particular the peculiar behavior of a flat top longitudinal electron distribution compared to a gaussian distribution has been studied giving important insights for the correct matching with the following linac whose working point is based on the double emittance minimum effect.
Original languageEnglish
Publication statusPublished - 2007
Externally publishedYes
Event29th International Free Electron Laser Conference, FEL 2007 - , Russian Federation
Duration: 1 Jan 2007 → …


Conference29th International Free Electron Laser Conference, FEL 2007
CountryRussian Federation
Period1/1/07 → …


All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics

Cite this

Chiadroni, E., Alesini, D., Bacci, A., Bellaveglia, M., Boni, R., Boscolo, M., ... Vicario, C. (2007). Direct measurement of phase space evolution in the sparc high brightness photoinjector. Paper presented at 29th International Free Electron Laser Conference, FEL 2007, Russian Federation.