Systematical design and three-dimensional simulation of X-ray FEL oscillator for Shanghai Coherent Light Facility

摘要

Shanghai Coherent Light Facility (SCLF) is a quasi-CW hard X-ray freeelectron laser user facility which is recently proposed. Due to the highrepetition rate, high quality electron beams, it is straightforward to consideran X-ray free electron laser oscillator (XFELO) operation for SCLF. The mainprocesses for XFELO design, and parameters optimization of the undulator, X-raycavity and electron beam are described. The first three-dimensional X-raycrystal Bragg diffraction code, named BRIGHT is built, which collaboratesclosely with GENESIS and OPC for numerical simulations of XFELO. The XFELOperformances of SCLF is investigated and optimized by theoretical analysis andnumerical simulation.