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@inproceedings{zhou:ipac2021-mopab099,
author = {G. Zhou and A. Halavanau and C. Pellegrini},
title = {{Intensity Fluctuations Reduction in the Double-Bunch FEL at LCLS}},
booktitle = {Proc. IPAC'21},
pages = {369--372},
eid = {MOPAB099},
language = {english},
keywords = {FEL, electron, laser, free-electron-laser, undulator},
venue = {Campinas, SP, Brazil},
series = {International Particle Accelerator Conference},
number = {12},
publisher = {JACoW Publishing, Geneva, Switzerland},
month = {08},
year = {2021},
issn = {2673-5490},
isbn = {978-3-95450-214-1},
doi = {10.18429/JACoW-IPAC2021-MOPAB099},
url = {https://jacow.org/ipac2021/papers/mopab099.pdf},
note = {https://doi.org/10.18429/JACoW-IPAC2021-MOPAB099},
abstract = {{In this paper we explore the possibility of reducing the intensity fluctuations of a hard X-ray double-bunch free-electron laser (DBFEL) by using an ultra-short, high peak current electron bunch to generate the seed signal, as studied recently for soft X-ray single bunch self-seeding. The ultra-short, nearly single-spike, SASE pulse is amplified to saturation, where a four-crystal monochromator selects a narrow bandwidth seed for the second bunch. Start-to-end simulation results for 7 keV photon energy are presented here for a DBFEL already studied for LCLS using the HXR undulator. We show that using this enhanced DBFEL (EDBFEL) system; the seed signal intensity fluctuations can be reduced from 85% to about 30%, and the second bunch intensity fluctuation at saturation to about 15%.}},
}