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Plasma density profile reconstruction of a gas cell for Ionization Induced Laser Wakefield Acceleration

Filippi, F. ; Dickson, L. ; Backhouse, M. ; Forestier-Colleoni, P. ; Gustafsson, C. LU orcid ; Cobo, C. ; Ballage, C. ; Dobosz Dufrénoy, S. ; Löfquist, E. LU and Maynard, G. , et al. (2023) In Journal of Instrumentation 18(5).
Abstract

Laser-driven plasma wakefields can provide hundreds of MeV electron beam in mm-range distances potentially shrinking the dimension of the actual particle accelerators. The plasma density plays a fundamental role in the control and stability of the acceleration process, which is a key development for the future electron injector proposed by EuPRAXIA. A gas cell was designed by LPGP and LIDYL teams, with variable length and backing pressure, to confine the gas and tailor the gas density profile before the arrival of the laser. This cell was used during an experimental campaign with the multi TW-class laser at the Lund Laser Centre. Ionization assisted injection in a tailored density profile is used to tune the electron beam properties.... (More)

Laser-driven plasma wakefields can provide hundreds of MeV electron beam in mm-range distances potentially shrinking the dimension of the actual particle accelerators. The plasma density plays a fundamental role in the control and stability of the acceleration process, which is a key development for the future electron injector proposed by EuPRAXIA. A gas cell was designed by LPGP and LIDYL teams, with variable length and backing pressure, to confine the gas and tailor the gas density profile before the arrival of the laser. This cell was used during an experimental campaign with the multi TW-class laser at the Lund Laser Centre. Ionization assisted injection in a tailored density profile is used to tune the electron beam properties. During the experiment, we filled the gas cell with hydrogen mixed with different concentration of nitrogen. We also varied the backing pressure of the gas and the geometrical length of the gas cell. We used a transverse probe to acquire shadowgraphic images of the plasma and to measure the plasma electron density. Methods and results of the analysis with comparisons between shadowgraphic and interferometric images will be discussed.

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organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Plasma diagnostics - interferometry, spectroscopy and imaging, Wake-field acceleration (laser-driven, electron-driven)
in
Journal of Instrumentation
volume
18
issue
5
article number
C05013
publisher
IOP Publishing
external identifiers
  • scopus:85159770612
ISSN
1748-0221
DOI
10.1088/1748-0221/18/05/C05013
language
English
LU publication?
yes
id
9adbc3cf-5f79-4432-99ef-948fad6e70d1
date added to LUP
2023-08-22 13:12:20
date last changed
2024-03-08 07:37:24
@article{9adbc3cf-5f79-4432-99ef-948fad6e70d1,
  abstract     = {{<p>Laser-driven plasma wakefields can provide hundreds of MeV electron beam in mm-range distances potentially shrinking the dimension of the actual particle accelerators. The plasma density plays a fundamental role in the control and stability of the acceleration process, which is a key development for the future electron injector proposed by EuPRAXIA. A gas cell was designed by LPGP and LIDYL teams, with variable length and backing pressure, to confine the gas and tailor the gas density profile before the arrival of the laser. This cell was used during an experimental campaign with the multi TW-class laser at the Lund Laser Centre. Ionization assisted injection in a tailored density profile is used to tune the electron beam properties. During the experiment, we filled the gas cell with hydrogen mixed with different concentration of nitrogen. We also varied the backing pressure of the gas and the geometrical length of the gas cell. We used a transverse probe to acquire shadowgraphic images of the plasma and to measure the plasma electron density. Methods and results of the analysis with comparisons between shadowgraphic and interferometric images will be discussed.</p>}},
  author       = {{Filippi, F. and Dickson, L. and Backhouse, M. and Forestier-Colleoni, P. and Gustafsson, C. and Cobo, C. and Ballage, C. and Dobosz Dufrénoy, S. and Löfquist, E. and Maynard, G. and Murphy, C. and Najmudin, Z. and Panza, F. and Persson, A. and Scisció, M. and Vasilovici, O. and Lundh, O. and Cros, B.}},
  issn         = {{1748-0221}},
  keywords     = {{Plasma diagnostics - interferometry, spectroscopy and imaging; Wake-field acceleration (laser-driven, electron-driven)}},
  language     = {{eng}},
  number       = {{5}},
  publisher    = {{IOP Publishing}},
  series       = {{Journal of Instrumentation}},
  title        = {{Plasma density profile reconstruction of a gas cell for Ionization Induced Laser Wakefield Acceleration}},
  url          = {{http://dx.doi.org/10.1088/1748-0221/18/05/C05013}},
  doi          = {{10.1088/1748-0221/18/05/C05013}},
  volume       = {{18}},
  year         = {{2023}},
}