论文信息 - Self-amplified spontaneous emission free-electron laser with an energy-chirped electron beam and undulator tapering. - 字舞流文

Self-amplified spontaneous emission free-electron laser with an energy-chirped electron beam and undulator tapering.

We report the first experimental implementation of a method based on simultaneous use of an energy chirp in the electron beam and a tapered undulator, for the generation of ultrashort pulses in a self-amplified spontaneous emission mode free-electron laser (SASE FEL). The experiment, performed at the SPARC FEL test facility, demonstrates the possibility of compensating the nominally detrimental effect of the chirp by a proper taper of the undulator gaps. An increase of more than 1 order of magnitude in the pulse energy is observed in comparison to the untapered case, accompanied by FEL spectra where the typical SASE spiking is suppressed.

A Mostacci | F Ciocci | M E Couprie | A Gallo | M Quattromini | L Cultrera | C Vicario | C. Vicario | F. Frassetto | G. Dattoli | J. Rosenzweig | M. Labat | M. Quattromini | L. Poletto | I. Spassovsky | A. Gallo | L. Giannessi | S. Spampinati | B. Spataro | M. Ferrario | E. Pace | M. Serluca | M. Bellaveglia | C. Vaccarezza | A. Mostacci | G. Marcus | J. Rau | M. Castellano | A. Cianchi | M. Couprie | E. Chiadroni | D. Filippetto | F. Briquez | F. Ciocci | C. Ronsivalle | E. Sabia | G. Pirro | M Labat | M Bellaveglia | E Chiadroni | A Cianchi | M Del Franco | G Di Pirro | M Ferrario | D Filippetto | F Frassetto | G Gatti | L Giannessi | A Petralia | V Petrillo | L Poletto | J V Rau | C Ronsivalle | E Sabia | M Serluca | I Spassovsky | V Surrenti | C Vaccarezza | F Briquez | G Dattoli | G Marcus | J Rosenzweig | G. Di Pirro | V. Petrillo | A. Bacci | A. Rossi | G. Gatti | A. Rossi | L. Cultrera | L. Ficcadenti | M. Moreno | A. Petralia | V. R. Albertini | V. Surrenti | A Bacci | M Castellano | L Ficcadenti | E Pace | A R Rossi | B Spataro | S Spampinati | M Moreno | V Rossi Albertini | V. Rossi Albertini | M. Del Franco | M. Franco | J. Rau | Luca Poletto

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