Skip to main content

Lund University Publications

LUND UNIVERSITY LIBRARIES

Experimental Generation of Wakefield Accelerator-Suitable Bunch Current Profiles by Arc-like Bunch Compressors

Svensson, J. Björklund LU orcid ; Curbis, F. LU orcid ; Lundquist, J. LU ; Mansten, E. LU ; Thorin, S. LU and Werin, S. LU (2026) In Journal of Physics: Conference Series 3266.
Abstract
Wakefield accelerators driven by linear accelerators (linacs) benefit from linearly ramped bunch current profiles, which can increase energy efficiency and reduce induced correlated energy spread in the accelerated bunch. Linacs often employ chicane bunch compressors and higher-harmonic radio-frequency cavities to tune the bunch current profiles. However, while possible, generating linearly ramped current profiles with these systems is not trivial. In this work, we demonstrate the generation of such current profiles using arc-like bunch compressors in the MAX IV linac by simply tuning the compressor sextupoles. We also find that this compression scheme can passively mitigate bunch compression jitter by appropriately setting the sextupoles.... (More)
Wakefield accelerators driven by linear accelerators (linacs) benefit from linearly ramped bunch current profiles, which can increase energy efficiency and reduce induced correlated energy spread in the accelerated bunch. Linacs often employ chicane bunch compressors and higher-harmonic radio-frequency cavities to tune the bunch current profiles. However, while possible, generating linearly ramped current profiles with these systems is not trivial. In this work, we demonstrate the generation of such current profiles using arc-like bunch compressors in the MAX IV linac by simply tuning the compressor sextupoles. We also find that this compression scheme can passively mitigate bunch compression jitter by appropriately setting the sextupoles. These results suggest the high suitability of arc-like bunch compressors for linacs driving wakefield accelerators, for use in, for example, X-ray free-electron lasers and particle colliders (Less)
Abstract (Swedish)
Wakefield accelerators driven by linear accelerators (linacs) benefit from linearly ramped bunch current profiles, which can increase energy efficiency and reduce induced correlated energy spread in the accelerated bunch. Linacs often employ chicane bunch compressors and higher-harmonic radio-frequency cavities to tune the bunch current profiles. However, while possible, generating linearly ramped current profiles with these systems is not trivial. In this work, we demonstrate the generation of such current profiles using arc-like bunch compressors in the MAX IV linac by simply tuning the compressor sextupoles. We also find that this compression scheme can passively mitigate bunch compression jitter by appropriately setting the sextupoles.... (More)
Wakefield accelerators driven by linear accelerators (linacs) benefit from linearly ramped bunch current profiles, which can increase energy efficiency and reduce induced correlated energy spread in the accelerated bunch. Linacs often employ chicane bunch compressors and higher-harmonic radio-frequency cavities to tune the bunch current profiles. However, while possible, generating linearly ramped current profiles with these systems is not trivial. In this work, we demonstrate the generation of such current profiles using arc-like bunch compressors in the MAX IV linac by simply tuning the compressor sextupoles. We also find that this compression scheme can passively mitigate bunch compression jitter by appropriately setting the sextupoles. These results suggest the high suitability of arc-like bunch compressors for linacs driving wakefield accelerators, for use in, for example, X-ray free-electron lasers and particle colliders. (Less)
Please use this url to cite or link to this publication:
author
; ; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Journal of Physics: Conference Series
volume
3266
article number
012005
publisher
IOP Publishing
ISSN
1742-6596
DOI
10.1088/1742-6596/3266/1/012005
language
English
LU publication?
yes
id
014ed88f-46ff-4f86-a668-cf6e6a81af19
date added to LUP
2026-07-20 09:32:04
date last changed
2026-07-29 12:24:44
@article{014ed88f-46ff-4f86-a668-cf6e6a81af19,
  abstract     = {{Wakefield accelerators driven by linear accelerators (linacs) benefit from linearly ramped bunch current profiles, which can increase energy efficiency and reduce induced correlated energy spread in the accelerated bunch. Linacs often employ chicane bunch compressors and higher-harmonic radio-frequency cavities to tune the bunch current profiles. However, while possible, generating linearly ramped current profiles with these systems is not trivial. In this work, we demonstrate the generation of such current profiles using arc-like bunch compressors in the MAX IV linac by simply tuning the compressor sextupoles. We also find that this compression scheme can passively mitigate bunch compression jitter by appropriately setting the sextupoles. These results suggest the high suitability of arc-like bunch compressors for linacs driving wakefield accelerators, for use in, for example, X-ray free-electron lasers and particle colliders}},
  author       = {{Svensson, J. Björklund and Curbis, F. and Lundquist, J. and Mansten, E. and Thorin, S. and Werin, S.}},
  issn         = {{1742-6596}},
  language     = {{eng}},
  month        = {{06}},
  publisher    = {{IOP Publishing}},
  series       = {{Journal of Physics: Conference Series}},
  title        = {{Experimental Generation of Wakefield Accelerator-Suitable Bunch Current Profiles by Arc-like Bunch Compressors}},
  url          = {{http://dx.doi.org/10.1088/1742-6596/3266/1/012005}},
  doi          = {{10.1088/1742-6596/3266/1/012005}},
  volume       = {{3266}},
  year         = {{2026}},
}