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Smith, T.J.

Paper Title Page
THPP035 Observation of Femtosecond Bunch Length Using a Transverse Deflecting Structure 538
 
  • M. Huening, A. Bolzmann, H. Schlarb
    DESY, Hamburg
  • J.C. Frisch, D.J. McCormick, M.C. Ross, T.J. Smith
    SLAC, Menlo Park, California
  • J. Rossbach
    Uni HH, Hamburg
  
 

The design of the VUV-FEL at DESY demands bunch lengths in the order of 50 fs and below.For the diagnostic of such very short bunches a transverse deflecting RF structure (LOLA) has been installed which streaks the beam according to the longitudinal distribution. Tests in the VUV-FEL yielded a rich substructure of the bunches. The most pronounced peak in the has a rms length of approximately 50 fs during FEL operation and below 20 fs FWHM at maximum compression. Depending on the transverse focusing a resolution between 10-50 fs was achieved.