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29 March 2024
 
  » arxiv » 1904.4893

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Enhanced relativistic-electron beam collimation using two consecutive laser pulses
S. Malko ; X.Vaisseau ; F.Perez ; D. Batani ; A. Curcio ; M. Ehret ; J.J. Honrubia ; K. Jakubowska ; A. Morace ; J.J. Santos ; L.Volpe ;
Date 9 Apr 2019
AbstractThe double laser pulse approach to relativistic electron beam (REB) collimation has been investigated at the LULI-ELFIE facility. In this scheme, the magnetic field generated by the first laser-driven REB is used to guide a second delayed REB. We show how electron beam collimation can be controlled by properly adjusting laser parameters. By changing the ratio of focus size and the delay time between the two pulses we found a maximum of electron beam collimation clearly dependent on the focal spot size ratio of the two laser pulses and related to the magnetic field dynamics. Cu-K alpha and CTR imaging diagnostics were implemented to evaluate the collimation effects on the respectively low energy (< 100 keV) and high energy (> MeV) components of the REB.
Source arXiv, 1904.4893
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