A New Method for Ultrashort Electron Pulse-shape Measurement Using Synchrotron Radiation from a Bending
نویسندگان
چکیده
The bunch compression system in the TTF-FEL decreases the bunch length in order to achieve the high peak currents needed for the SASE FEL process. Along the curved trajectories in the bunch compressor magnet chicanes, these short bunches will start to radiate coherently. In this paper, a numerical calculation of the characteristics of this radiation is presented. One-dimensional bunch models are not su cient for near eld e ects in particular cannot completely explain the power ow to the EM eld, but they can be used to estimate the radiation in the far region. For the calculation of the power ow, in presence of shielding by horizontal conducting planes, and of the fareld, a twodimensional bunch with time dependent shape was simulated.
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