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

Journal Article · · Physical Review Accelerators and Beams
ORCiD logo [1];  [2];  [3];  [3]; ORCiD logo [4];  [3];  [3]
  1. Northern Illinois Univ., DeKalb, IL (United States). Northern Illinois Center for Accelerator & Detector Development; Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States); SLAC National Accelerator Lab., Menlo Park, CA (United States)
  2. Argonne National Lab. (ANL), Argonne, IL (United States). Argonne Wakefield Accelerator; Tsinghua Univ., Beijing (China). Dept. of Engineering Physics and Accelerator Lab.
  3. Argonne National Lab. (ANL), Argonne, IL (United States). Argonne Wakefield Accelerator
  4. Northern Illinois Univ., DeKalb, IL (United States). Northern Illinois Center for Accelerator & Detector Development; Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
+ Show Author Affiliations

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 [, , , and , Intense Superradiant X Rays from a Compact Source Using a Nanocathode Array and Emittance Exchange, Phys. Rev. Lett. 108, 263904 (2012)] 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.

Research Organization:
Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States); SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States); UChicago, LLC., Argonne, IL (United States); Northern Illinois Univ., DeKalb, IL (United States); Argonne National Laboratory (ANL), Argonne, IL (United States)
Sponsoring Organization:
USDOE Office of Science (SC), High Energy Physics (HEP)
Grant/Contract Number:
AC02-76SF00515; SC0011831; SC0018656; AC02-06CH11357; AC02-07CH11359
OSTI ID:
1573122
Alternate ID(s):
OSTI ID: 1560848; OSTI ID: 1573235; OSTI ID: 1615740
Report Number(s):
arXiv:1907.02089; FERMILAB-PUB-19-345-APC; PRABCJ; TRN: US2100032
Journal Information:
Physical Review Accelerators and Beams, Vol. 22, Issue 11; ISSN 2469-9888
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 5 works
Citation information provided by
Web of Science

References (25)

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