We present the experimental demonstration of a novel scheme for the generation of ultrashort pulse trains based on the FEL lasing from a multi-peaked eletron energy distribution. At SPARC we generated two electron beamlets with relative energy difference larger than the FEL parameter ? by illuminating the cathode with a combed laser, followed by a manipulation of the longitudinal phase space by velocity bunching in the linac. The SASE FEL radiation obtained by sending such beam in the undulator is analyzed by a FROG diagnostic revealing the double-peaked spectrum and temporally modulated pulse structure
Generation of a train of short pulses by means of FEL emission of a combed electron beam / Petrillo, V.; Artioli, M.; Ciocci, F.; Dattoli, G.; Petralia, A.; Ronsivalle, C.; Quattromini, M.; Sabia, E.; Giannessi, L.; Anania, M. P.; Bellaveglia, M.; Chiadroni, E.; Di Giovenale, D.; Di Pirro, G.; Ferrario, Massimo; Gatti, G.; Pompili, R.; Vaccarezza, Cristina; Villa, F.; Bacci, A.; Rossi, A. R.; Rau, J. V.; Musumeci, P.; Cianchi, A.; Mostacci, Andrea. - ELETTRONICO. - (2013), pp. 2-5. (Intervento presentato al convegno 35th Intern. Free-Electron Laser Conference tenutosi a New York (Manhattan), USA nel August 26-30, 2013).
Generation of a train of short pulses by means of FEL emission of a combed electron beam.
E. Chiadroni;FERRARIO, MASSIMO;VACCAREZZA, CRISTINA;MOSTACCI, Andrea
2013
Abstract
We present the experimental demonstration of a novel scheme for the generation of ultrashort pulse trains based on the FEL lasing from a multi-peaked eletron energy distribution. At SPARC we generated two electron beamlets with relative energy difference larger than the FEL parameter ? by illuminating the cathode with a combed laser, followed by a manipulation of the longitudinal phase space by velocity bunching in the linac. The SASE FEL radiation obtained by sending such beam in the undulator is analyzed by a FROG diagnostic revealing the double-peaked spectrum and temporally modulated pulse structureI documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
