CERN Accelerating science

Article
Title	Experiments on the Synchronization of an Ultrafast Cr : LiSAF Laser with the ELETTRA Storage Ring and FEL Pulses
Author(s)	Ferianis, Mario ; Danailov, M B ; De Ninno, G ; Diviacco, Bruno ; Trovò, Mauro
Affiliation	(Elettra, Basovizza, Trieste CNR-IMIP, Basovizza (TS)NILES, Cairo)
Publication	2004
In:	26th International Free Electron Laser Conference and 11th FEL User Workshop 2004, Trieste, Italy, 29 Aug - 3 Sep 2004, pp.e-proc. THPOS08
Subject category	Accelerators and Storage Rings
Abstract	The techniques for synchronizing ultrafast lasers to external radio frequency reference sources are well established and characterized in the literature. However, data lack on the minimum light-to-light jitter which can be achieved in different synchrotron operation modes when an external laser is locked to the storage ring master clock. Here we present first results for the synchronization of an ultrafast Cr:LiSAF laser with electromagnetic radiation coming from the Elettra storage ring in four bunch and multi-bunch mode. In addition, data on the synchronization of the same laser with the Elettra FEL pulses, both in free running and Q-switching regime, are reported. In our experiments, laser-to-RF locking was continuously monitored using a built-in phase detection. The laser light to storage ring light locking was characterized by simultaneous acquisition of two/three pulse trains by a streak camera. In addition, pulse jitter was determined by processing of the signal of fast photodiodes monitoring the different light beams.