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Title: Tailoring of an electron-bunch current distribution via space-to-time mapping of a transversely shaped, photoemission-laser pulse

Abstract

Temporally shaped electron bunches at ultrafast time scales are foreseen to support an array of applications including the development of small-footprint accelerator-based coherent light sources or as probes for, e.g., ultrafast electron-diffraction. We demonstrate a method where a transversely segmented electron bunch produced via photoemission from a transversely patterned laser distribution is transformed into an electron bunch with modulated temporal distribution. In essence, the presented transformation enables the mapping of the transverse laser distribution on a photocathode surface to the temporal coordinate and provides a proof-of-principle experiment of the method proposed in Reference [W. S. Graves, F. X. Kärtner, D. E. Moncton, and P. Piot, Intense Superradiant X Rays from a Compact Source Using a Nanocathode Array and Emittance Exchange, Phys. Rev. Lett. 108, 263904 (2012)PRLTAO0031-900710.1103/PhysRevLett.108.263904] as a path toward the realization of compact coherent x-ray sources, albeit at a larger timescale. The presented experiment is validated against numerical simulations and the versatility of the concept, e.g., to tune the current-distribution parameters, is showcased. Although our work focuses on the generation of electron bunches arranged as a temporal comb it is applicable to other temporal shapes.

Authors:
ORCiD logo; ; ; ; ORCiD logo; ;
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States); Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States); SLAC National Accelerator Lab., Menlo Park, CA (United States); UChicago, LLC., Argonne, IL (United States); Northern Illinois Univ., DeKalb, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP)
OSTI Identifier:
1573122
Alternate Identifier(s):
OSTI ID: 1560848; OSTI ID: 1573235; OSTI ID: 1615740
Report Number(s):
arXiv:1907.02089; FERMILAB-PUB-19-345-APC
Journal ID: ISSN 2469-9888; PRABCJ; 114401
Grant/Contract Number:  
SC0011831; SC0018656; AC02-06CH11357; AC02-07CH11359; 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: 22 Journal Issue: 11; Journal ID: ISSN 2469-9888
Publisher:
American Physical Society
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS

Citation Formats

Halavanau, A., Gao, Q., Conde, M., Ha, G., Piot, P., Power, J. G., and Wisniewski, E. Tailoring of an electron-bunch current distribution via space-to-time mapping of a transversely shaped, photoemission-laser pulse. United States: N. p., 2019. Web. doi:10.1103/PhysRevAccelBeams.22.114401.
Halavanau, A., Gao, Q., Conde, M., Ha, G., Piot, P., Power, J. G., & Wisniewski, E. Tailoring of an electron-bunch current distribution via space-to-time mapping of a transversely shaped, photoemission-laser pulse. United States. doi:10.1103/PhysRevAccelBeams.22.114401.
Halavanau, A., Gao, Q., Conde, M., Ha, G., Piot, P., Power, J. G., and Wisniewski, E. Tue . "Tailoring of an electron-bunch current distribution via space-to-time mapping of a transversely shaped, photoemission-laser pulse". United States. doi:10.1103/PhysRevAccelBeams.22.114401.
@article{osti_1573122,
title = {Tailoring of an electron-bunch current distribution via space-to-time mapping of a transversely shaped, photoemission-laser pulse},
author = {Halavanau, A. and Gao, Q. and Conde, M. and Ha, G. and Piot, P. and Power, J. G. and Wisniewski, E.},
abstractNote = {Temporally shaped electron bunches at ultrafast time scales are foreseen to support an array of applications including the development of small-footprint accelerator-based coherent light sources or as probes for, e.g., ultrafast electron-diffraction. We demonstrate a method where a transversely segmented electron bunch produced via photoemission from a transversely patterned laser distribution is transformed into an electron bunch with modulated temporal distribution. In essence, the presented transformation enables the mapping of the transverse laser distribution on a photocathode surface to the temporal coordinate and provides a proof-of-principle experiment of the method proposed in Reference [W. S. Graves, F. X. Kärtner, D. E. Moncton, and P. Piot, Intense Superradiant X Rays from a Compact Source Using a Nanocathode Array and Emittance Exchange, Phys. Rev. Lett. 108, 263904 (2012)PRLTAO0031-900710.1103/PhysRevLett.108.263904] as a path toward the realization of compact coherent x-ray sources, albeit at a larger timescale. The presented experiment is validated against numerical simulations and the versatility of the concept, e.g., to tune the current-distribution parameters, is showcased. Although our work focuses on the generation of electron bunches arranged as a temporal comb it is applicable to other temporal shapes.},
doi = {10.1103/PhysRevAccelBeams.22.114401},
journal = {Physical Review Accelerators and Beams},
number = 11,
volume = 22,
place = {United States},
year = {2019},
month = {11}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
DOI: 10.1103/PhysRevAccelBeams.22.114401

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Cited by: 2 works
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