期刊
NEW JOURNAL OF PHYSICS
卷 18, 期 -, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/1367-2630/18/8/083033
关键词
beam dynamics; velocity-bunching; magnetic compression; synchronization; timing jitter; photo-injector
资金
- EU Commission in the Seventh Framework Program [312453-EuCARD-2]
- FIRB-Fondo per gli Investimenti della Ricerca di Base [RBFR12NK5K]
The generation of ultra-short electron bunches with ultra-low timing-jitter relative to the photocathode (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.
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