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Title: Generation of ultrashort electron bunches by colliding laser pulses

Abstract

A proposed laser-plasma based relativistic electron source [E. Esarey et al., Phys. Rev. Lett. 79, 2682 (1997)] using laser triggered injection of electrons is investigated. The source generates ultrashort electron bunches by dephasing and trapping background plasma electrons undergoing fluid oscillations in an excited plasma wake. The plasma electrons are dephased by colliding two counter-propagating laser pulses which generate a slow phase velocity beat wave. Laser pulse intensity thresholds for trapping and the optimal wake phase for injection are calculated. Numerical simulations of test particles, with prescribed plasma and laser fields, are used to verify analytic predictions and to study the longitudinal and transverse dynamics of the trapped plasma electrons. Simulations indicate that the colliding laser pulse injection scheme has the capability to produce relativistic femtosecond electron bunches with fractional energy spread of order a few percent and normalized transverse emittance less than 1 mm mrad using 1 TW injection laser pulses.

Authors:
; ;  [1];  [2];  [3]
  1. Department of Physics, University of California at Berkeley, Berkeley, California 94720 (United States)
  2. Beam Physics Branch, Plasma Physics Division, Navel Research Laboratory, Washington, District of Columbia 20375 (United States)
  3. Center for Beam Physics, Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, California 94720 (United States)
Publication Date:
OSTI Identifier:
21205389
Resource Type:
Journal Article
Journal Name:
AIP Conference Proceedings
Additional Journal Information:
Journal Volume: 472; Journal Issue: 1; Conference: 8. workshop on advanced accelerator concepts, Baltimore, MD (United States), 6-11 Jul 1998; Other Information: DOI: 10.1063/1.58911; (c) 1999 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0094-243X
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; BEAM BUNCHING; BEAM INJECTION; BEAM-PLASMA SYSTEMS; COMPUTERIZED SIMULATION; ELECTRON BEAMS; ELECTRON SOURCES; ELECTRONS; LASER RADIATION; LASER-PRODUCED PLASMA; LASERS; OPTICAL SYSTEMS; PHASE VELOCITY; PULSES; RELATIVISTIC RANGE; TRAPPING; WAKEFIELD ACCELERATORS

Citation Formats

Schroeder, C B, Lee, P B, Wurtele, J S, Esarey, E, and Leemans, W P. Generation of ultrashort electron bunches by colliding laser pulses. United States: N. p., 1999. Web. doi:10.1063/1.58911.
Schroeder, C B, Lee, P B, Wurtele, J S, Esarey, E, & Leemans, W P. Generation of ultrashort electron bunches by colliding laser pulses. United States. https://doi.org/10.1063/1.58911
Schroeder, C B, Lee, P B, Wurtele, J S, Esarey, E, and Leemans, W P. 1999. "Generation of ultrashort electron bunches by colliding laser pulses". United States. https://doi.org/10.1063/1.58911.
@article{osti_21205389,
title = {Generation of ultrashort electron bunches by colliding laser pulses},
author = {Schroeder, C B and Lee, P B and Wurtele, J S and Esarey, E and Leemans, W P},
abstractNote = {A proposed laser-plasma based relativistic electron source [E. Esarey et al., Phys. Rev. Lett. 79, 2682 (1997)] using laser triggered injection of electrons is investigated. The source generates ultrashort electron bunches by dephasing and trapping background plasma electrons undergoing fluid oscillations in an excited plasma wake. The plasma electrons are dephased by colliding two counter-propagating laser pulses which generate a slow phase velocity beat wave. Laser pulse intensity thresholds for trapping and the optimal wake phase for injection are calculated. Numerical simulations of test particles, with prescribed plasma and laser fields, are used to verify analytic predictions and to study the longitudinal and transverse dynamics of the trapped plasma electrons. Simulations indicate that the colliding laser pulse injection scheme has the capability to produce relativistic femtosecond electron bunches with fractional energy spread of order a few percent and normalized transverse emittance less than 1 mm mrad using 1 TW injection laser pulses.},
doi = {10.1063/1.58911},
url = {https://www.osti.gov/biblio/21205389}, journal = {AIP Conference Proceedings},
issn = {0094-243X},
number = 1,
volume = 472,
place = {United States},
year = {Mon Jul 12 00:00:00 EDT 1999},
month = {Mon Jul 12 00:00:00 EDT 1999}
}