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Title: Simulation analysis and optimization of fresh-slice multistage free-electron lasers

Abstract

The generation of femtosecond soft x-ray free-electron laser (XFEL) pulses with an energy of hundreds of microjoules has been demonstrated at the Linac Coherent Light Source (LCLS) based on fresh-slice multistage amplifications. In this paper, we present a comprehensive simulation analysis and methods to improve fresh-slice multistage XFELs. A time-dependent transverse kick along the bunch is generated by two passive corrugated structures. The resulting oscillating orbit is controlled by downstream kickers, enabling different slices of the bunch to lase. The simulations reproduce the LCLS experimental results in terms of the pulse energy, bandwidth, and statistics of spectral spikes. The simulations reveal time-domain pulse profile properties, such as the pulse duration and structure, that were unavailable experimentally. We discuss possible issues connected with the accelerator setup and propose a simpler and more robust variation of the scheme to generate XFEL pulses shorter than 3 fs.

Authors:
ORCiD logo; ORCiD logo; ; ; ; ; ORCiD logo
Publication Date:
Research Org.:
SLAC National Accelerator Lab., Menlo Park, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1605458
Alternate Identifier(s):
OSTI ID: 1608309
Grant/Contract Number:  
AC02-76SF00515
Resource Type:
Published Article
Journal Name:
Physical Review Accelerators and Beams
Additional Journal Information:
Journal Name: Physical Review Accelerators and Beams Journal Volume: 23 Journal Issue: 3; Journal ID: ISSN 2469-9888
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
47 OTHER INSTRUMENTATION; Beam optics; X-ray lasers; Free-electron lasers

Citation Formats

Guo, Zhaoheng, Guetg, Marc W., Ding, Yuantao, Marinelli, Agostino, Wu, Juhao, Huang, Zhirong, and Lutman, Alberto A. Simulation analysis and optimization of fresh-slice multistage free-electron lasers. United States: N. p., 2020. Web. doi:10.1103/PhysRevAccelBeams.23.031304.
Guo, Zhaoheng, Guetg, Marc W., Ding, Yuantao, Marinelli, Agostino, Wu, Juhao, Huang, Zhirong, & Lutman, Alberto A. Simulation analysis and optimization of fresh-slice multistage free-electron lasers. United States. doi:https://doi.org/10.1103/PhysRevAccelBeams.23.031304
Guo, Zhaoheng, Guetg, Marc W., Ding, Yuantao, Marinelli, Agostino, Wu, Juhao, Huang, Zhirong, and Lutman, Alberto A. Tue . "Simulation analysis and optimization of fresh-slice multistage free-electron lasers". United States. doi:https://doi.org/10.1103/PhysRevAccelBeams.23.031304.
@article{osti_1605458,
title = {Simulation analysis and optimization of fresh-slice multistage free-electron lasers},
author = {Guo, Zhaoheng and Guetg, Marc W. and Ding, Yuantao and Marinelli, Agostino and Wu, Juhao and Huang, Zhirong and Lutman, Alberto A.},
abstractNote = {The generation of femtosecond soft x-ray free-electron laser (XFEL) pulses with an energy of hundreds of microjoules has been demonstrated at the Linac Coherent Light Source (LCLS) based on fresh-slice multistage amplifications. In this paper, we present a comprehensive simulation analysis and methods to improve fresh-slice multistage XFELs. A time-dependent transverse kick along the bunch is generated by two passive corrugated structures. The resulting oscillating orbit is controlled by downstream kickers, enabling different slices of the bunch to lase. The simulations reproduce the LCLS experimental results in terms of the pulse energy, bandwidth, and statistics of spectral spikes. The simulations reveal time-domain pulse profile properties, such as the pulse duration and structure, that were unavailable experimentally. We discuss possible issues connected with the accelerator setup and propose a simpler and more robust variation of the scheme to generate XFEL pulses shorter than 3 fs.},
doi = {10.1103/PhysRevAccelBeams.23.031304},
journal = {Physical Review Accelerators and Beams},
number = 3,
volume = 23,
place = {United States},
year = {2020},
month = {3}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
DOI: https://doi.org/10.1103/PhysRevAccelBeams.23.031304

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