Two-color x-ray free-electron laser by photocathode laser emittance spoiler
Abstract
Multispectral x-ray pump-probe experiments call for synchronized two-color free-electron lasers (FEL). This mode often implies a laborious setup or an inefficient use of the undulator. We report on a simple and noninvasive approach tested at SwissFEL for a two-color x-ray delivering almost 60% of the pulse energy compared with a single color. In this new method, a ps UV pulse is overlapped to the photocathode drive laser increasing the beam emittance, which locally inhibits the FEL process. This scheme permits high-stability in energy and spectrum and the control of the two-color duration and intensity ratio. It enables shot-to-shot switching between one and two-color FEL and, since not associate to beam losses, it is compatible with high repetition-rate and high average-power FELs.
- Authors:
-
[1];
[1];
[1];
[1]
- Paul Scherrer Inst. (PSI), Villigen (Switzerland)
- SLAC National Accelerator Lab., Menlo Park, CA (United States)
- Publication Date:
- Research Org.:
- SLAC National Accelerator Lab., Menlo Park, CA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- OSTI Identifier:
- 1819833
- Grant/Contract Number:
- AC02-76SF00515
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physical Review Accelerators and Beams
- Additional Journal Information:
- Journal Volume: 24; Journal Issue: 6; Journal ID: ISSN 2469-9888
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 43 PARTICLE ACCELERATORS; Beam injection, extraction & transport; Beam processes; Free-electron lasers
Citation Formats
Vicario, Carlo, Bettoni, Simona, Lutman, Alberto, Dax, Andreas, Huppert, Martin, and Trisorio, Alexandre. Two-color x-ray free-electron laser by photocathode laser emittance spoiler. United States: N. p., 2021.
Web. doi:10.1103/physrevaccelbeams.24.060703.
Vicario, Carlo, Bettoni, Simona, Lutman, Alberto, Dax, Andreas, Huppert, Martin, & Trisorio, Alexandre. Two-color x-ray free-electron laser by photocathode laser emittance spoiler. United States. https://doi.org/10.1103/physrevaccelbeams.24.060703
Vicario, Carlo, Bettoni, Simona, Lutman, Alberto, Dax, Andreas, Huppert, Martin, and Trisorio, Alexandre. Mon .
"Two-color x-ray free-electron laser by photocathode laser emittance spoiler". United States. https://doi.org/10.1103/physrevaccelbeams.24.060703. https://www.osti.gov/servlets/purl/1819833.
@article{osti_1819833,
title = {Two-color x-ray free-electron laser by photocathode laser emittance spoiler},
author = {Vicario, Carlo and Bettoni, Simona and Lutman, Alberto and Dax, Andreas and Huppert, Martin and Trisorio, Alexandre},
abstractNote = {Multispectral x-ray pump-probe experiments call for synchronized two-color free-electron lasers (FEL). This mode often implies a laborious setup or an inefficient use of the undulator. We report on a simple and noninvasive approach tested at SwissFEL for a two-color x-ray delivering almost 60% of the pulse energy compared with a single color. In this new method, a ps UV pulse is overlapped to the photocathode drive laser increasing the beam emittance, which locally inhibits the FEL process. This scheme permits high-stability in energy and spectrum and the control of the two-color duration and intensity ratio. It enables shot-to-shot switching between one and two-color FEL and, since not associate to beam losses, it is compatible with high repetition-rate and high average-power FELs.},
doi = {10.1103/physrevaccelbeams.24.060703},
journal = {Physical Review Accelerators and Beams},
number = 6,
volume = 24,
place = {United States},
year = {Mon Jun 28 00:00:00 EDT 2021},
month = {Mon Jun 28 00:00:00 EDT 2021}
}
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