Photo electron beam diagnostics at Waseda University

A double slits scan technique for emittance measurements and a frequency analysis technique for bunch length measurements has been developed at Waseda University. Another method for bunch length measurements, RF kicker cavity technique, has been developed. The principle of RF kicker cavity technique is similar to that of streak camera, which converts the time domain of the electron beam to the spatial domain of that. In this paper, we report the experimental results of transverse emittance measurements and bunch length measurements. The transverse emittance as a function of electron beam charge was measured in three cases of laser spot size. The results of bunch length measurements using the frequency analysis technique are in good agreement with simulation results for PARMELA. (author)