Speaker
Description
Forward Bragg diffraction (FBD)-based hard X-ray self-seeding (HXRSS) is a promising method for producing narrow-bandwidth and stable hard X-ray FEL pulses. However, the pulse-energy stability of self-seeded FELs can be influenced by several temporal effects, including the FBD filter response, the electron bunch duration, the seed-pulse overlap, and the self-seeding chicane delay. In this work, we numerically investigate the origin of FEL pulse-energy rms jitter in FBD-based HXRSS under baseline conditions without undulator tapering and without bunch energy chirp. By excluding these additional optimization and compensation effects, the study focuses on the intrinsic temporal factors that determine the FEL energy fluctuation.
Funding Agency
This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Ministry of Science and ICT (MSIT) (Grant No. RS-2025-25435073).
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