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Casalbuoni, S.

Paper Title Page
THPP039 Spectral Decoding Electro Optic Bunch Length and Arrival Time Jitter Measurements at the DESY VUV-FEL 549
 
  • B. Steffen, S. Casalbuoni, E.-A. Knabbe, B. Schmidt
    DESY, Hamburg
  • P. Schmuser, A. Winter
    Uni HH, Hamburg
  
 

For the operation of a SASE FEL, the longitudinal bunch profile is one of the most critical parameters. At the superconducting linac of the VUV-FEL at DESY, we have installed an electro optic spectral decoding (EOSD) experiment to probe the time structure of the electric field of the bunches to better than 200 fs rms. The field induced birefringence of a ZnTe crystal is detected by a 30 femtosecond laser pulse (TiSa) and the time structure is measured by encoding it on the spectrum of the chirped TiSa pulse. First results on jitter measurements and for the bunch length as function of the linac parameters are presented.