Longitudinal Coherence Enhancement of X-Ray Free Electron Lasers
arXiv:2010.02821
Abstract
We present a new scheme for establishing longitudinal coherence in the output of X-ray FELs. It uses a sequence of undulators and delay chicanes and the careful tailoring of the initial e-beam with time dependent focusing. Simulation of a simplified model of the FEL shows that the idea works well.