Speaker
Description
Current x-ray free-electron lasers (XFELs) rely on single-pass amplification starting from noise or a seed and require long undulator lines to reach saturation. An oscillator configuration allows for multi-pass amplification, using shorter undulator lines, and the filtering properties of both the resonator and the gain will improve the transverse and longitudinal coherence. Here we consider a four-mirror resonator comprising of four identical diamond Bragg reflectors, reflecting on 45 degrees, and two compound reflecting lenses to create a stable resonator for an XFEL. As an example, we use the parameters of LCLS II to analysis the resonator using OPC and OPC-MINERVA for initial study of the XFEL oscillator performance.
Funding Agency
US DOE Contract DE-SC0024397
