Abstract

A coherent soft x-ray Compton source driven by a density modulated electron beam is investigated. The density modulation is attained by an inverse free electron laser prebuncher, which offers strong energy modulation at the relevant beam energies for Compton scattering in an shallow-angle oblique scattering geometry using relatively low laser beam power. In particular, we study the case of a 101.7 MeV electron beam produced by a state-of-the-art high brightness accelerator beamline. Calculations show that 1011 coherent soft x-ray photons per second can be generated in an ultra-narrow relative bandwidth of 0.002% from a 250 pC microbunched electron bunch colliding with a 23 mJ laser pulse at 10 kHz.

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