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Correlated x-ray and electron beam steering by pulse-front tilt in laser wakefield acceleration

Löfquist, Erik LU ; Gustafsson, Cornelia LU orcid ; Angella, Andrea LU ; Persson, Anders LU and Lundh, Olle LU orcid (2025) In Phys. Rev. Accel. Beams 28.
Abstract
Laser wakefield accelerators produce ultrashort, highly relativistic electron and x-ray pulses in plasma over millimeter distances. Crucial for investigations and applications of these pulses is a reproducible and controlled output beam pointing. Even with a perfectly stable laser, pulse-front tilt in the driving laser pulse has been shown to cause both the laser pulse and the electron beam to deviate differently from the optical axis after the plasma. We show that this steering also extends to the generated x-rays, but in such a way that they perfectly follow the electron beam. The electron beam or x-ray beam pointing can thus be noninvasively inferred from the other, even when pulse-front-tilt steering is present. This enables active... (More)
Laser wakefield accelerators produce ultrashort, highly relativistic electron and x-ray pulses in plasma over millimeter distances. Crucial for investigations and applications of these pulses is a reproducible and controlled output beam pointing. Even with a perfectly stable laser, pulse-front tilt in the driving laser pulse has been shown to cause both the laser pulse and the electron beam to deviate differently from the optical axis after the plasma. We show that this steering also extends to the generated x-rays, but in such a way that they perfectly follow the electron beam. The electron beam or x-ray beam pointing can thus be noninvasively inferred from the other, even when pulse-front-tilt steering is present. This enables active stabilization of either beam, without significant impact on key beam parameters such as energy, charge, and divergence. (Less)
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author
; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Phys. Rev. Accel. Beams
volume
28
article number
102802
pages
7 pages
publisher
American Physical Society
DOI
10.1103/cq83-8kfb
language
English
LU publication?
yes
id
794f97ff-06b2-47d6-893c-72ca99911a3c
date added to LUP
2025-12-01 11:32:21
date last changed
2025-12-01 14:21:56
@article{794f97ff-06b2-47d6-893c-72ca99911a3c,
  abstract     = {{Laser wakefield accelerators produce ultrashort, highly relativistic electron and x-ray pulses in plasma over millimeter distances. Crucial for investigations and applications of these pulses is a reproducible and controlled output beam pointing. Even with a perfectly stable laser, pulse-front tilt in the driving laser pulse has been shown to cause both the laser pulse and the electron beam to deviate differently from the optical axis after the plasma. We show that this steering also extends to the generated x-rays, but in such a way that they perfectly follow the electron beam. The electron beam or x-ray beam pointing can thus be noninvasively inferred from the other, even when pulse-front-tilt steering is present. This enables active stabilization of either beam, without significant impact on key beam parameters such as energy, charge, and divergence.}},
  author       = {{Löfquist, Erik and Gustafsson, Cornelia and Angella, Andrea and Persson, Anders and Lundh, Olle}},
  language     = {{eng}},
  month        = {{10}},
  publisher    = {{American Physical Society}},
  series       = {{Phys. Rev. Accel. Beams}},
  title        = {{Correlated x-ray and electron beam steering by pulse-front tilt in laser wakefield acceleration}},
  url          = {{http://dx.doi.org/10.1103/cq83-8kfb}},
  doi          = {{10.1103/cq83-8kfb}},
  volume       = {{28}},
  year         = {{2025}},
}