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

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.
Authors:
 [1] ;  [1] ;  [1] ;  [1] ;  [1] ;  [2] ;  [2] ;  [2] ;  [2] ;  [2] ;  [2] ;  [2]
  1. Univ. of California, Los Angeles, CA (United States)
  2. Brookhaven National Lab. (BNL), Upton, NY (United States)
Publication Date:
Report Number(s):
BNL-203625-2018-JAAM
Journal ID: ISSN 0031-9007; PRLTAO
Grant/Contract Number:
SC0012704; SC0009914
Type:
Accepted Manuscript
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 120; Journal Issue: 11; Journal ID: ISSN 0031-9007
Publisher:
American Physical Society (APS)
Research Org:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Org:
USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26)
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS
OSTI Identifier:
1436279
Alternate Identifier(s):
OSTI ID: 1426327

Sudar, N., Musumeci, P., Gadjev, I., Sakai, Y., Fabbri, S., Polyanskiy, M., Pogorelsky, I., Fedurin, M., Swinson, C., Kusche, K., Babzien, M., and Palmer, M.. Demonstration of Cascaded Modulator-Chicane Microbunching of a Relativistic Electron Beam. United States: N. p., Web. doi:10.1103/PhysRevLett.120.114802.
Sudar, N., Musumeci, P., Gadjev, I., Sakai, Y., Fabbri, S., Polyanskiy, M., Pogorelsky, I., Fedurin, M., Swinson, C., Kusche, K., Babzien, M., & Palmer, M.. Demonstration of Cascaded Modulator-Chicane Microbunching of a Relativistic Electron Beam. United States. doi:10.1103/PhysRevLett.120.114802.
Sudar, N., Musumeci, P., Gadjev, I., Sakai, Y., Fabbri, S., Polyanskiy, M., Pogorelsky, I., Fedurin, M., Swinson, C., Kusche, K., Babzien, M., and Palmer, M.. 2018. "Demonstration of Cascaded Modulator-Chicane Microbunching of a Relativistic Electron Beam". United States. doi:10.1103/PhysRevLett.120.114802.
@article{osti_1436279,
title = {Demonstration of Cascaded Modulator-Chicane Microbunching of a Relativistic Electron Beam},
author = {Sudar, N. and Musumeci, P. and Gadjev, I. and Sakai, Y. and Fabbri, S. and Polyanskiy, M. and Pogorelsky, I. and Fedurin, M. and Swinson, C. and Kusche, K. and Babzien, M. and Palmer, M.},
abstractNote = {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.},
doi = {10.1103/PhysRevLett.120.114802},
journal = {Physical Review Letters},
number = 11,
volume = 120,
place = {United States},
year = {2018},
month = {3}
}