Speaker
Description
We present the experimental results on the generation of fresh-slice self-seeded hard X-ray free-electron laser (FEL) pulses at PAL-XFEL. The self-seeding scheme significantly enhances the spectral brightness of FELs and has therefore been extensively verified and widely applied in user science over the years, whereas the fresh-slice technique enables higher pulse power by reducing the pulse duration while maintaining high pulse intensity. By mitigating the trade-off between the seed FEL intensity and the slice energy spread of the electron beam, the fresh-slice method can further improve the efficiency of the self-seeding scheme. Consequently, the combined scheme enables the generation of high-power and high-brightness FELs, potentially enabling diffraction-before-destruction in experiments and investigation of ultrafast dynamics. Recently, the fresh-slice scheme exploiting a corrugated structure was implemented at PAL-XFEL and combined with the self-seeding scheme for the generation of hard X-ray FEL pulses. In this presentation, the experimental results of the fresh-slice self-seeded HXFEL generation will be reported.
| I have read and accept the Privacy Policy Statement | Yes |
|---|