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Title: Demonstration of Cascaded Modulator-Chicane Microbunching of a Relativistic Electron Beam

Journal Article · · Physical Review Letters

Here, we present results of an experiment showing the first successful demonstration of a cascaded microbunching scheme. Two modulator-chicane prebunchers arranged in series and a high power mid-IR laser seed are used to modulate a 52 MeV electron beam into a train of sharp microbunches phase locked to the external drive laser. This configuration is shown to greatly improve matching of the beam into the small longitudinal phase space acceptance of short-wavelength accelerators. We demonstrate trapping of nearly all (96%) of the electrons in a strongly tapered inverse free-electron laser accelerator, with an order-of-magnitude reduction in injection losses compared to the classical single-buncher scheme. These results represent a critical advance in laser-based longitudinal phase space manipulations and find application in high gradient advanced acceleration as well as in high peak and average power coherent radiation sources.

Research Organization:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Nuclear Physics (NP); USDOE
Grant/Contract Number:
SC0012704; SC0009914
OSTI ID:
1436279
Alternate ID(s):
OSTI ID: 1426327
Report Number(s):
BNL-203625-2018-JAAM; PRLTAO; TRN: US1900167
Journal Information:
Physical Review Letters, Vol. 120, Issue 11; ISSN 0031-9007
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 15 works
Citation information provided by
Web of Science

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Phase space manipulations for optimization of an inverse free electron laser
  • Sudar, Nicholas; Musumeci, Pietro; Duris, Joe
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journal September 2017
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Figures / Tables (6)


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