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Title: Phase-Stable Self-Modulation of an Electron Beam in a Magnetic Wiggler

Abstract

Electron beams with a sinusoidal energy modulation have the potential to emit subfemtosecond x-ray pulses in a free-electron laser. An energy modulation can be generated by overlapping a powerful infrared laser with an electron beam in a magnetic wiggler. We report on a new infrared source for this modulation, coherent radiation from the electron beam itself. In this self-modulation process, the current spike on the tail of the electron beam radiates coherently at the resonant wavelength of the wiggler, producing a six-period carrier-envelope-phase (CEP)-stable infrared field with gigawatt power. This field creates a few MeV, phase-stable modulation in the electron-beam core. Lastly, the modulated electron beam is immediately useful for generating subfemtosecond x-ray pulses at any machine repetition rate, and the CEP-stable infrared field may find application as an experimental pump or timing diagnostic.

Authors:
 [1];  [2];  [2];  [2];  [3];  [2];  [1];  [1]
+ Show Author Affiliations
  1. SLAC National Accelerator Lab., Menlo Park, CA (United States); Stanford Univ., CA (United States)
  2. SLAC National Accelerator Lab., Menlo Park, CA (United States)
  3. Argonne National Lab. (ANL), Lemont, IL (United States)
Publication Date:
Research Org.:
SLAC National Accelerator Lab., Menlo Park, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES); National Science Foundation (NSF)
OSTI Identifier:
1596646
Grant/Contract Number:  
AC02-76SF00515; 100317; ACI-1339893
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 123; Journal Issue: 21; Journal ID: ISSN 0031-9007
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; Bean dynamics; Beam impedance; Radiation from moving charges; Synchroton radiation & free-electron lasers; Undulators & wigglers

Citation Formats

MacArthur, James P., Duris, Joseph, Zhang, Zhen, Lutman, Alberto, Zholents, Alexander, Xu, Xinlu, Huang, Zhirong, and Marinelli, Agostino. Phase-Stable Self-Modulation of an Electron Beam in a Magnetic Wiggler. United States: N. p., 2019. Web. doi:10.1103/PhysRevLett.123.214801.
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MacArthur, James P., Duris, Joseph, Zhang, Zhen, Lutman, Alberto, Zholents, Alexander, Xu, Xinlu, Huang, Zhirong, & Marinelli, Agostino. Phase-Stable Self-Modulation of an Electron Beam in a Magnetic Wiggler. United States. https://doi.org/10.1103/PhysRevLett.123.214801
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MacArthur, James P., Duris, Joseph, Zhang, Zhen, Lutman, Alberto, Zholents, Alexander, Xu, Xinlu, Huang, Zhirong, and Marinelli, Agostino. Wed . "Phase-Stable Self-Modulation of an Electron Beam in a Magnetic Wiggler". United States. https://doi.org/10.1103/PhysRevLett.123.214801. https://www.osti.gov/servlets/purl/1596646.
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@article{osti_1596646,
title = {Phase-Stable Self-Modulation of an Electron Beam in a Magnetic Wiggler},
author = {MacArthur, James P. and Duris, Joseph and Zhang, Zhen and Lutman, Alberto and Zholents, Alexander and Xu, Xinlu and Huang, Zhirong and Marinelli, Agostino},
abstractNote = {Electron beams with a sinusoidal energy modulation have the potential to emit subfemtosecond x-ray pulses in a free-electron laser. An energy modulation can be generated by overlapping a powerful infrared laser with an electron beam in a magnetic wiggler. We report on a new infrared source for this modulation, coherent radiation from the electron beam itself. In this self-modulation process, the current spike on the tail of the electron beam radiates coherently at the resonant wavelength of the wiggler, producing a six-period carrier-envelope-phase (CEP)-stable infrared field with gigawatt power. This field creates a few MeV, phase-stable modulation in the electron-beam core. Lastly, the modulated electron beam is immediately useful for generating subfemtosecond x-ray pulses at any machine repetition rate, and the CEP-stable infrared field may find application as an experimental pump or timing diagnostic.},
doi = {10.1103/PhysRevLett.123.214801},
journal = {Physical Review Letters},
number = 21,
volume = 123,
place = {United States},
year = {2019},
month = {11}
}
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https://doi.org/10.1103/PhysRevLett.123.214801
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    Tunable isolated attosecond X-ray pulses with gigawatt peak power from a free-electron laser
    journal, December 2019

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