Abstract
The longitudinal modulation to the electron beam by a coherent seed laser pulse is widely used for generating fully coherent,short wavelength radiation in various harmonic generation free electron laser (FEL) schemes.After introducing the density modulation,microstructures down to attosecond scale are produced over the distance of one seed laser wavelength.In order to take into account the microstructures in the theoretical and numerical analysis,in the frame of undulator period averaged approach,a modified model for harmonic generation FEL is developed in this paper.With the modified model,three harmonic generation FEL examples are investigated by employing Shanghai soft X-ray FEL (SXFEL) parameters.In FEL schemes with ultra-high harmonic generation and ultra-short pulse,the modified model presents some interesting aspects which are helpful for understanding of radiation pulse evolution,bunching efficiency and noise propagation issues.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
