Electron beams and X ray radiation generated by laser wakefield in capillary tubes

B. Cros, J. Ju, A. Döpp, K. Cassou, H. E. Ferrari, G. Maynard, G. Genoud, F. Wojda, K. Svensson, M. Burza, O. Lundh, A. Persson, C. G. Wahlström

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

1 Citation (Scopus)


Laser wakefield is generated inside capillary tubes in order to study the conditions for self-injection of plasma electrons and their acceleration inside a large domain of parameters. Dielectric capillary tubes are employed to guide the laser pulse and collect laser energy around the central focal spot to favor laser propagation. Electrons are observed to be self-injected and accelerated to the 200 MeV range when a peak laser intensity as low as 5×1017 W/cm2 is used. X-rays emitted by betatron radiation constitute a precise diagnostic of the electron acceleration process. Furthermore, the peak brightness of X-rays is increased to 1021 ph/s/mm2/ mrad2/0.1%BW when the laser pulse is focused to 5×10 18 W/cm2, which is about 30 times higher than the value obtained by using a 2 mm gas jet.

Original languageEnglish
Title of host publicationAdvanced Accelerator Concepts: 15th Advanced Accelerator Concepts Workshop
PublisherAmerican Institute of Physics (AIP)
Number of pages6
ISBN (Print)978-0-7354-1125-8
Publication statusPublished - 1 Dec 2012
MoE publication typeNot Eligible
Event15th Advanced Accelerator Concepts Workshop, AAC 2012 - Austin, TX, United States
Duration: 10 Jun 201215 Jun 2012

Publication series

SeriesAIP Conference Proceedings


Conference15th Advanced Accelerator Concepts Workshop, AAC 2012
Country/TerritoryUnited States
CityAustin, TX


  • betatron radiation
  • capillary tube guiding
  • Laser wakefield acceleration
  • X-ray


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