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Reproducibility of electron beams from laser wakefield acceleration in capillary tubes

Desforges, F. G.; Hansson, Martin LU ; Ju, J.; Senje, Lovisa LU ; Audet, T. L.; Dobosz-Dufrenoy, S.; Persson, Anders LU ; Lundh, Olle LU ; Wahlström, Claes-Göran LU and Cros, B. (2014) In Nuclear Instruments & Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment 740. p.54-59
Abstract
The stability of accelerated electron beams produced by self injection of plasma electrons into the wakefield driven by a laser pulse guided inside capillary tubes is analyzed statistically in relation to laser and plasma parameters, and compared to results obtained in a gas jet. The analysis shows that reproducible electron beams are achieved with a charge of 66 pC +/- 11%, a FWHM beam divergence of 9 mrad +/- 14%, a maximum energy of 120 MeV +/- 10% and pointing fluctuations of 2.3 mrad using 10 mm long, 178 mu m diameter capillary tubes at an electron density of (10.0 +/- 1.5) x 10(18) cm(-3). Active stabilization of the laser pointing was used and laser parameters were recorded on each shot. Although the shot-to-shot laser energy... (More)
The stability of accelerated electron beams produced by self injection of plasma electrons into the wakefield driven by a laser pulse guided inside capillary tubes is analyzed statistically in relation to laser and plasma parameters, and compared to results obtained in a gas jet. The analysis shows that reproducible electron beams are achieved with a charge of 66 pC +/- 11%, a FWHM beam divergence of 9 mrad +/- 14%, a maximum energy of 120 MeV +/- 10% and pointing fluctuations of 2.3 mrad using 10 mm long, 178 mu m diameter capillary tubes at an electron density of (10.0 +/- 1.5) x 10(18) cm(-3). Active stabilization of the laser pointing was used and laser parameters were recorded on each shot. Although the shot-to-shot laser energy fluctuations can account for a fraction of the electrons fluctuations, gas density fluctuations are suspected to be a more important source of instability. (C) 2013 Elsevier B.V. All rights reserved. (Less)
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organization
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Contribution to journal
publication status
published
subject
keywords
Laser wakefield, Laser plasma accelerator, Electron acceleration, Capillary tube, Electron beans stability
in
Nuclear Instruments & Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment
volume
740
pages
54 - 59
publisher
Elsevier
external identifiers
  • wos:000331831100012
  • scopus:84897641289
ISSN
0167-5087
DOI
10.1016/j.nima.2013.10.062
language
English
LU publication?
yes
id
dcda4840-0f63-4de6-b2ad-9b9dbc501c04 (old id 4417546)
date added to LUP
2014-04-30 11:27:34
date last changed
2017-08-13 03:56:52
@article{dcda4840-0f63-4de6-b2ad-9b9dbc501c04,
  abstract     = {The stability of accelerated electron beams produced by self injection of plasma electrons into the wakefield driven by a laser pulse guided inside capillary tubes is analyzed statistically in relation to laser and plasma parameters, and compared to results obtained in a gas jet. The analysis shows that reproducible electron beams are achieved with a charge of 66 pC +/- 11%, a FWHM beam divergence of 9 mrad +/- 14%, a maximum energy of 120 MeV +/- 10% and pointing fluctuations of 2.3 mrad using 10 mm long, 178 mu m diameter capillary tubes at an electron density of (10.0 +/- 1.5) x 10(18) cm(-3). Active stabilization of the laser pointing was used and laser parameters were recorded on each shot. Although the shot-to-shot laser energy fluctuations can account for a fraction of the electrons fluctuations, gas density fluctuations are suspected to be a more important source of instability. (C) 2013 Elsevier B.V. All rights reserved.},
  author       = {Desforges, F. G. and Hansson, Martin and Ju, J. and Senje, Lovisa and Audet, T. L. and Dobosz-Dufrenoy, S. and Persson, Anders and Lundh, Olle and Wahlström, Claes-Göran and Cros, B.},
  issn         = {0167-5087},
  keyword      = {Laser wakefield,Laser plasma accelerator,Electron acceleration,Capillary tube,Electron beans stability},
  language     = {eng},
  pages        = {54--59},
  publisher    = {Elsevier},
  series       = {Nuclear Instruments & Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment},
  title        = {Reproducibility of electron beams from laser wakefield acceleration in capillary tubes},
  url          = {http://dx.doi.org/10.1016/j.nima.2013.10.062},
  volume       = {740},
  year         = {2014},
}