Simulation of synchrotron radiation at the first bunch compressor of flash

One method to measure the bunch shape at the free electron laser at DESY Hamburg (FLASH) is to use the synchrotron radiation (SR) emitted from charged particles traveling through the first bunch compressor. For the numerical simulation of the generated high frequency synchrotron radiation the uniform theory of diffraction (UTD) is employed. In this paper a new promising comparison of measured and simulated fields is shown. Furthermore, the applicability and limitations of the method are discussed.