Speaker
Lu Cao
(Deutsches Elektronen-Synchrotron DESY)
Description
High-spectral density and high photon energy X-ray pulses are crucial for advanced photon science experiments. Self-seeding schemes are standard for improving spectral density, yet their performance depends heavily on electron beam quality.
This study numerically investigates the impact on the perrformance of two distinct schemes—direct self-seeding and second harmonic self-seeding—caused by the slice electron energy spread at the undulator entrance at the European XFEL. Using Genesis 1.3 simulations, we analyzed the maximum spectral density evolution along the undulators and compared it at specfic position after the monochromator at 18keV for these two schemes.
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Authors
Gianluca Geloni
(European X-Ray Free-Electron Laser)
Lu Cao
(Deutsches Elektronen-Synchrotron DESY)
Shan Liu
(Deutsches Elektronen-Synchrotron DESY)