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Title: Parallel-plate waveguides for terahertz-driven MeV electron bunch compression

Journal Article · · Optics Express
DOI:https://doi.org/10.1364/OE.27.023791· OSTI ID:1546874
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We demonstrate the electromagnetic performance of waveguides for femtosecond electron beam bunch manipulation and compression with strong-field terahertz (THz) pulses. The compressor structure is a dispersion-free exponentially-tapered parallel-plate waveguide (PPWG) that can focus single-cycle THz pulses along one dimension. We show test results of the tapered PPWG structure using electro-optic sampling (EOS) at the interaction region with peak fields of at least 300 kV/cm, given 0.9 µJ of incoming THz energy. We also present a modified shorted design of the tapered PPWG for better beam manipulation and reduced magnetic field as an alternative to a dual-feed approach. As an example, we demonstrate that with 5 µJ of THz energy, the PPWG compresses a 2.5 MeV electron bunch by a compression factor of more than 4, achieving a bunch length of about 18 fs.

Research Organization:
SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
2015-SLAC-100238-Funding; AC02-05CH11231; AC02-76SF00515
OSTI ID:
1546874
Alternate ID(s):
OSTI ID: 1562501
Journal Information:
Optics Express, Journal Name: Optics Express Vol. 27 Journal Issue: 17; ISSN 1094-4087
Publisher:
Optical Society of AmericaCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 8 works
Citation information provided by
Web of Science

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Figures / Tables (6)

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