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Title: High quality electron beams from a plasma channel guided laser wakefield accelerator

Abstract

Laser driven accelerators, in which particles are accelerated by the electric field of a plasma wave driven by an intense laser, have demonstrated accelerating electric fields of hundreds of GV/m. These fields are thousands of times those achievable in conventional radiofrequency (RF) accelerators, spurring interest in laser accelerators as compact next generation sources of energetic electrons and radiation. To date however, acceleration distances have been severely limited by lack of a controllable method for extending the propagation distance of the focused laser pulse. The ensuing short acceleration distance results in low energy beams with 100% electron energy spread, limiting applications. Here we demonstrate that a relativistically intense laser can be guided by a preformed plasma density channel and that the longer propagation distance can result in electron beams of percent energy spread with low emittance and increased energy, containing >10{sup 9} electrons above 80 MeV. The preformed plasma channel technique forms the basis of a new class of accelerators, combining beam quality comparable to RF accelerators with the high gradients of laser accelerators to produce compact tunable high brightness electron and radiation sources.

Authors:
; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Director. Office of Science. Office of High Energy and Nuclear Physics. Division of High Energy Physics (US)
OSTI Identifier:
836978
Report Number(s):
LBNL-55732; CBP Note-576
R&D Project: 455401; TRN: US0500851
DOE Contract Number:  
AC03-76SF00098
Resource Type:
Journal Article
Resource Relation:
Journal Name: Nature; Journal Volume: 431; Journal Issue: 7008; Other Information: Submitted to Nature: Volume 431, No.7008; Journal Publication Date: 09/30/2004; PBD: 8 Jul 2004
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; ACCELERATION; ACCELERATORS; BRIGHTNESS; ELECTRIC FIELDS; ELECTRON BEAMS; ELECTRONS; LASERS; PLASMA DENSITY; PLASMA WAVES; RADIATION SOURCES; TAIL ELECTRONS; WAKEFIELD ACCELERATORS

Citation Formats

Geddes, C.G.R., Toth, Cs., van Tilborg, J., Esarey, E., Schroeder, C.B., Bruhwiler, D., Nieter, C., Cary, J., and Leemans, W.P. High quality electron beams from a plasma channel guided laser wakefield accelerator. United States: N. p., 2004. Web. doi:10.1038/nature02900.
Geddes, C.G.R., Toth, Cs., van Tilborg, J., Esarey, E., Schroeder, C.B., Bruhwiler, D., Nieter, C., Cary, J., & Leemans, W.P. High quality electron beams from a plasma channel guided laser wakefield accelerator. United States. doi:10.1038/nature02900.
Geddes, C.G.R., Toth, Cs., van Tilborg, J., Esarey, E., Schroeder, C.B., Bruhwiler, D., Nieter, C., Cary, J., and Leemans, W.P. Thu . "High quality electron beams from a plasma channel guided laser wakefield accelerator". United States. doi:10.1038/nature02900. https://www.osti.gov/servlets/purl/836978.
@article{osti_836978,
title = {High quality electron beams from a plasma channel guided laser wakefield accelerator},
author = {Geddes, C.G.R. and Toth, Cs. and van Tilborg, J. and Esarey, E. and Schroeder, C.B. and Bruhwiler, D. and Nieter, C. and Cary, J. and Leemans, W.P.},
abstractNote = {Laser driven accelerators, in which particles are accelerated by the electric field of a plasma wave driven by an intense laser, have demonstrated accelerating electric fields of hundreds of GV/m. These fields are thousands of times those achievable in conventional radiofrequency (RF) accelerators, spurring interest in laser accelerators as compact next generation sources of energetic electrons and radiation. To date however, acceleration distances have been severely limited by lack of a controllable method for extending the propagation distance of the focused laser pulse. The ensuing short acceleration distance results in low energy beams with 100% electron energy spread, limiting applications. Here we demonstrate that a relativistically intense laser can be guided by a preformed plasma density channel and that the longer propagation distance can result in electron beams of percent energy spread with low emittance and increased energy, containing >10{sup 9} electrons above 80 MeV. The preformed plasma channel technique forms the basis of a new class of accelerators, combining beam quality comparable to RF accelerators with the high gradients of laser accelerators to produce compact tunable high brightness electron and radiation sources.},
doi = {10.1038/nature02900},
journal = {Nature},
number = 7008,
volume = 431,
place = {United States},
year = {Thu Jul 08 00:00:00 EDT 2004},
month = {Thu Jul 08 00:00:00 EDT 2004}
}