Transport and analysis of electron beams from a laser wakefield accelerator in the 100 MeV energy range with a dedicated magnetic line

A. Maitrallain, T.L. Audet, S. Dobosz Drufrénoy, A. Chancé, G. Maynard, P. Lee, A. Mosnier, J. Schwindling, O. Delferriére, N. Delerue, A. Specka, P. Monot, B. Cros

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Electron bunches generated by laser driven wakefield acceleration are transported and analyzed using a magnetic line composed of a triplet of quadrupoles and a dipole. Short pulse bunches with a total charge of ≈130pC, and broad band energy spectra in the range 45 to 150MeV are generated by ionization assisted injection in a gas cell. The electron source is imaged about one meter away from the exit of the gas cell by the magnetic line, delivering electron bunches at a stable position in the image plane where a charge density of ≈2.9pC∕mm2 at an energy of 69.4±0.6MeV is achieved. This magnetic line improves dramatically the accuracy of energy determination of this electron source, leading to an energy error as low as 8.6‰ in the 70MeV range for 5mrad divergence electron bunch and considering the resolution of the entire detection system. The transport of bunches with improved stability and energy selection paves the way to various applications including multi-stage laser plasma acceleration.
LanguageEnglish
Pages159-166
Number of pages8
JournalNuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Volume908
Early online date6 Aug 2018
DOIs
Publication statusPublished - 11 Nov 2018

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Particle accelerators
Electron sources
Electron beams
accelerators
electron beams
electron sources
Electrons
Lasers
lasers
plasma acceleration
Charge density
Gases
Band structure
Ionization
electrons
energy
cells
laser plasmas
gases
Plasmas

Keywords

  • laser wakefield acceleration
  • transport line
  • spectrometer
  • electron bunches

Cite this

Maitrallain, A. ; Audet, T.L. ; Dobosz Drufrénoy, S. ; Chancé, A. ; Maynard, G. ; Lee, P. ; Mosnier, A. ; Schwindling, J. ; Delferriére, O. ; Delerue, N. ; Specka, A. ; Monot, P. ; Cros, B. / Transport and analysis of electron beams from a laser wakefield accelerator in the 100 MeV energy range with a dedicated magnetic line. In: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 2018 ; Vol. 908. pp. 159-166.
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Transport and analysis of electron beams from a laser wakefield accelerator in the 100 MeV energy range with a dedicated magnetic line. / Maitrallain, A.; Audet, T.L.; Dobosz Drufrénoy, S.; Chancé, A.; Maynard, G.; Lee, P.; Mosnier, A.; Schwindling, J.; Delferriére, O.; Delerue, N.; Specka, A.; Monot, P.; Cros, B.

In: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 908, 11.11.2018, p. 159-166.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Transport and analysis of electron beams from a laser wakefield accelerator in the 100 MeV energy range with a dedicated magnetic line

AU - Maitrallain, A.

AU - Audet, T.L.

AU - Dobosz Drufrénoy, S.

AU - Chancé, A.

AU - Maynard, G.

AU - Lee, P.

AU - Mosnier, A.

AU - Schwindling, J.

AU - Delferriére, O.

AU - Delerue, N.

AU - Specka, A.

AU - Monot, P.

AU - Cros, B.

PY - 2018/11/11

Y1 - 2018/11/11

N2 - Electron bunches generated by laser driven wakefield acceleration are transported and analyzed using a magnetic line composed of a triplet of quadrupoles and a dipole. Short pulse bunches with a total charge of ≈130pC, and broad band energy spectra in the range 45 to 150MeV are generated by ionization assisted injection in a gas cell. The electron source is imaged about one meter away from the exit of the gas cell by the magnetic line, delivering electron bunches at a stable position in the image plane where a charge density of ≈2.9pC∕mm2 at an energy of 69.4±0.6MeV is achieved. This magnetic line improves dramatically the accuracy of energy determination of this electron source, leading to an energy error as low as 8.6‰ in the 70MeV range for 5mrad divergence electron bunch and considering the resolution of the entire detection system. The transport of bunches with improved stability and energy selection paves the way to various applications including multi-stage laser plasma acceleration.

AB - Electron bunches generated by laser driven wakefield acceleration are transported and analyzed using a magnetic line composed of a triplet of quadrupoles and a dipole. Short pulse bunches with a total charge of ≈130pC, and broad band energy spectra in the range 45 to 150MeV are generated by ionization assisted injection in a gas cell. The electron source is imaged about one meter away from the exit of the gas cell by the magnetic line, delivering electron bunches at a stable position in the image plane where a charge density of ≈2.9pC∕mm2 at an energy of 69.4±0.6MeV is achieved. This magnetic line improves dramatically the accuracy of energy determination of this electron source, leading to an energy error as low as 8.6‰ in the 70MeV range for 5mrad divergence electron bunch and considering the resolution of the entire detection system. The transport of bunches with improved stability and energy selection paves the way to various applications including multi-stage laser plasma acceleration.

KW - laser wakefield acceleration

KW - transport line

KW - spectrometer

KW - electron bunches

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JF - Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

SN - 0168-9002

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