Skip to main content

Lund University Publications

LUND UNIVERSITY LIBRARIES

Longitudinally resolved measurement of energy-transfer efficiency in a plasma-wakefield accelerator

Boulton, L. ; Lindstrøm, C. A. ; Beinortaite, J. ; Svensson, J. Björklund LU orcid ; Garland, J. M. ; Caminal, P. González ; Hidding, B. ; Loisch, G. ; Peña, F. and Põder, K. , et al. (2026) In Physical Review Research 8(2).
Abstract
Energy-transfer efficiency is an important quantity in plasma-wakefield acceleration, especially for applications that demand high average power. Conventionally, the efficiency is measured using an electron spectrometer, an invasive method that provides an energy-transfer efficiency averaged over the full length of the plasma accelerator. Here, we experimentally demonstrate the use of the excess light emitted by the plasma after a beam-plasma interaction in a method that yields noninvasive, longitudinally resolved measurements of the local energy-transfer efficiency from the wake to the accelerated bunch. As we show, by diagnosing the acceleration process directly at the plasma location, this method can provide more insight into effects... (More)
Energy-transfer efficiency is an important quantity in plasma-wakefield acceleration, especially for applications that demand high average power. Conventionally, the efficiency is measured using an electron spectrometer, an invasive method that provides an energy-transfer efficiency averaged over the full length of the plasma accelerator. Here, we experimentally demonstrate the use of the excess light emitted by the plasma after a beam-plasma interaction in a method that yields noninvasive, longitudinally resolved measurements of the local energy-transfer efficiency from the wake to the accelerated bunch. As we show, by diagnosing the acceleration process directly at the plasma location, this method can provide more insight into effects such as trailing bunch charge loss, which typically impose systematic errors on downstream spectrometer measurements. In the future, this method would also be suitable for the online optimization of individual stages in multistage plasma accelerators. (Less)
Abstract (Swedish)
Energy-transfer efficiency is an important quantity in plasma-wakefield acceleration, especially for applications that demand high average power. Conventionally, the efficiency is measured using an electron spectrometer, an invasive method that provides an energy-transfer efficiency averaged over the full length of the plasma accelerator. Here, we experimentally demonstrate the use of the excess light emitted by the plasma after abeam-plasma interaction in a method that yields noninvasive, longitudinally resolved measurements of the local energy-transfer efficiency from the wake to the accelerated bunch. As we show, by diagnosing the acceleration process directly at the plasma location, this method can provide more insight into effects... (More)
Energy-transfer efficiency is an important quantity in plasma-wakefield acceleration, especially for applications that demand high average power. Conventionally, the efficiency is measured using an electron spectrometer, an invasive method that provides an energy-transfer efficiency averaged over the full length of the plasma accelerator. Here, we experimentally demonstrate the use of the excess light emitted by the plasma after abeam-plasma interaction in a method that yields noninvasive, longitudinally resolved measurements of the local energy-transfer efficiency from the wake to the accelerated bunch. As we show, by diagnosing the acceleration process directly at the plasma location, this method can provide more insight into effects such as trailing bunch charge loss, which typically impose systematic errors on downstream spectrometer measurements. In the future, this method would also be suitable for the online optimization of individual stages in multistage plasma accelerators. (Less)
Please use this url to cite or link to this publication:
author
; ; ; ; ; ; ; ; and , et al. (More)
; ; ; ; ; ; ; ; ; ; ; ; ; ; and (Less)
publishing date
type
Contribution to journal
publication status
published
in
Physical Review Research
volume
8
issue
2
article number
023231
publisher
American Physical Society
external identifiers
  • scopus:105042066687
ISSN
2643-1564
DOI
10.1103/b8hj-shvc
language
English
LU publication?
no
id
8f6c573d-835b-4275-a563-aea43cc2348e
date added to LUP
2026-07-20 09:50:13
date last changed
2026-07-29 12:18:01
@article{8f6c573d-835b-4275-a563-aea43cc2348e,
  abstract     = {{Energy-transfer efficiency is an important quantity in plasma-wakefield acceleration, especially for applications that demand high average power. Conventionally, the efficiency is measured using an electron spectrometer, an invasive method that provides an energy-transfer efficiency averaged over the full length of the plasma accelerator. Here, we experimentally demonstrate the use of the excess light emitted by the plasma after a beam-plasma interaction in a method that yields noninvasive, longitudinally resolved measurements of the local energy-transfer efficiency from the wake to the accelerated bunch. As we show, by diagnosing the acceleration process directly at the plasma location, this method can provide more insight into effects such as trailing bunch charge loss, which typically impose systematic errors on downstream spectrometer measurements. In the future, this method would also be suitable for the online optimization of individual stages in multistage plasma accelerators.}},
  author       = {{Boulton, L. and Lindstrøm, C. A. and Beinortaite, J. and Svensson, J. Björklund and Garland, J. M. and Caminal, P. González and Hidding, B. and Loisch, G. and Peña, F. and Põder, K. and Schröder, S. and Wesch, S. and Wing, M. and Wood, J. C. and Osterhoff, J. and D’Arcy, R.}},
  issn         = {{2643-1564}},
  language     = {{eng}},
  month        = {{06}},
  number       = {{2}},
  publisher    = {{American Physical Society}},
  series       = {{Physical Review Research}},
  title        = {{Longitudinally resolved measurement of energy-transfer efficiency in a plasma-wakefield accelerator}},
  url          = {{http://dx.doi.org/10.1103/b8hj-shvc}},
  doi          = {{10.1103/b8hj-shvc}},
  volume       = {{8}},
  year         = {{2026}},
}