Femtosecond timing-jitter between photo-cathode laser and ultra-short electron bunches by means of hybrid compression
oleh: R Pompili, M P Anania, M Bellaveglia, A Biagioni, G Castorina, E Chiadroni, A Cianchi, M Croia, D Di Giovenale, M Ferrario, F Filippi, A Gallo, G Gatti, F Giorgianni, A Giribono, W Li, S Lupi, A Mostacci, M Petrarca, L Piersanti, G Di Pirro, S Romeo, J Scifo, V Shpakov, C Vaccarezza, F Villa
| Format: | Article |
|---|---|
| Diterbitkan: | IOP Publishing 2016-01-01 |
Deskripsi
The generation of ultra-short electron bunches with ultra-low timing-jitter relative to the photo-cathode (PC) laser has been experimentally proved for the first time at the SPARC_LAB test-facility (INFN-LNF, Frascati) exploiting a two-stage hybrid compression scheme. The first stage employs RF-based compression (velocity-bunching), which shortens the bunch and imprints an energy chirp on it. The second stage is performed in a non-isochronous dogleg line, where the compression is completed resulting in a final bunch duration below 90 fs (rms). At the same time, the beam arrival timing-jitter with respect to the PC laser has been measured to be lower than 20 fs (rms). The reported results have been validated with numerical simulations.