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Characterization of laser wakefield acceleration efficiency with octave spanning near-IR spectrum measurements

Streeter, M. J.V. ; Ma, Y. ; Kettle, B. ; Dann, S. J.D. ; Gerstmayr, E. ; Albert, F. ; Bourgeois, N. ; Cipiccia, S. ; Cole, J. M. and Gallardo González, I. LU orcid , et al. (2022) In Physical Review Accelerators and Beams 25(10).
Abstract

We report on experimental measurements of energy transfer efficiencies in a GeV-class laser wakefield accelerator. Both the transfer of energy from the laser to the plasma wakefield and from the plasma to the accelerated electron beam was diagnosed by simultaneous measurement of the deceleration of laser photons and the acceleration of electrons as a function of plasma length. The extraction efficiency, which we define as the ratio of the energy gained by the electron beam to the energy lost by the self-guided laser mode, was maximized at 19±3% by tuning the plasma density and length. The additional information provided by the octave-spanning laser spectrum measurement allows for independent optimization of the plasma efficiency terms,... (More)

We report on experimental measurements of energy transfer efficiencies in a GeV-class laser wakefield accelerator. Both the transfer of energy from the laser to the plasma wakefield and from the plasma to the accelerated electron beam was diagnosed by simultaneous measurement of the deceleration of laser photons and the acceleration of electrons as a function of plasma length. The extraction efficiency, which we define as the ratio of the energy gained by the electron beam to the energy lost by the self-guided laser mode, was maximized at 19±3% by tuning the plasma density and length. The additional information provided by the octave-spanning laser spectrum measurement allows for independent optimization of the plasma efficiency terms, which is required for the key goal of improving the overall efficiency of laser wakefield accelerators.

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organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Physical Review Accelerators and Beams
volume
25
issue
10
article number
101302
publisher
American Physical Society
external identifiers
  • scopus:85141565718
ISSN
2469-9888
DOI
10.1103/PhysRevAccelBeams.25.101302
language
English
LU publication?
yes
id
64b844ae-1da9-4df5-bf50-ed4010bf9ac1
date added to LUP
2022-12-05 11:33:55
date last changed
2025-04-04 15:14:26
@article{64b844ae-1da9-4df5-bf50-ed4010bf9ac1,
  abstract     = {{<p>We report on experimental measurements of energy transfer efficiencies in a GeV-class laser wakefield accelerator. Both the transfer of energy from the laser to the plasma wakefield and from the plasma to the accelerated electron beam was diagnosed by simultaneous measurement of the deceleration of laser photons and the acceleration of electrons as a function of plasma length. The extraction efficiency, which we define as the ratio of the energy gained by the electron beam to the energy lost by the self-guided laser mode, was maximized at 19±3% by tuning the plasma density and length. The additional information provided by the octave-spanning laser spectrum measurement allows for independent optimization of the plasma efficiency terms, which is required for the key goal of improving the overall efficiency of laser wakefield accelerators.</p>}},
  author       = {{Streeter, M. J.V. and Ma, Y. and Kettle, B. and Dann, S. J.D. and Gerstmayr, E. and Albert, F. and Bourgeois, N. and Cipiccia, S. and Cole, J. M. and Gallardo González, I. and Hussein, A. E. and Jaroszynski, D. A. and Falk, K. and Krushelnick, K. and Lemos, N. and Lopes, N. C. and Lumsdon, C. and Lundh, O. and Mangles, S. P.D. and Najmudin, Z. and Rajeev, P. P. and Sandberg, R. and Shahzad, M. and Smid, M. and Spesyvtsev, R. and Symes, D. R. and Vieux, G. and Thomas, A. G.R.}},
  issn         = {{2469-9888}},
  language     = {{eng}},
  number       = {{10}},
  publisher    = {{American Physical Society}},
  series       = {{Physical Review Accelerators and Beams}},
  title        = {{Characterization of laser wakefield acceleration efficiency with octave spanning near-IR spectrum measurements}},
  url          = {{http://dx.doi.org/10.1103/PhysRevAccelBeams.25.101302}},
  doi          = {{10.1103/PhysRevAccelBeams.25.101302}},
  volume       = {{25}},
  year         = {{2022}},
}