Characterization of kHz Repetition Rate Laser-Driven Electron Beams by an Inhomogeneous Field Dipole Magnet Spectrometer

Characterization of kHz Repetition Rate Laser-Driven Electron Beams by an Inhomogeneous Field Dipole Magnet Spectrometer

We demonstrate a method to characterize the beam energy, transverse profile, charge, and dose of a pulsed electron beam generated by a 1 kHz TW laser-plasma accelerator. The method is based on imaging with a scintillating screen in an inhomogeneous, orthogonal magnetic field produced by a wide-gap m...

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Main Authors: Illia Zymak, Marco Favetta, Gabriele Maria Grittani, Carlo Maria Lazzarini, Gianfranco Tassielli, Annika Grenfell, Leonardo Goncalves, Sebastian Lorenz, Vanda Sluková, Filip Vitha, Roberto Versaci, Edwin Chacon-Golcher, Michal Nevrkla, Jiří Šišma, Roman Antipenkov, Václav Šobr, Wojciech Szuba, Theresa Staufer, Florian Grüner, Loredana Lapadula, Ezio Ranieri, Michele Piombino, Nasr A. M. Hafz, Christos Kamperidis, Daniel Papp, Sudipta Mondal, Pavel Bakule, Sergei V. Bulanov
Format: Article
Language:English
Published: MDPI AG 2024-12-01
Series:Photonics
Subjects:
laser wakefield acceleration
high repetition rate high power laser
electron beam metrology
phosphorous screen detector
Monte Carlo particle–matter interaction model
relativistic particle tracking model
Online Access:https://www.mdpi.com/2304-6732/11/12/1208
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Summary:We demonstrate a method to characterize the beam energy, transverse profile, charge, and dose of a pulsed electron beam generated by a 1 kHz TW laser-plasma accelerator. The method is based on imaging with a scintillating screen in an inhomogeneous, orthogonal magnetic field produced by a wide-gap magnetic dipole. Numerical simulations were developed to reconstruct the electron beam parameters accurately. The method has been experimentally verified and calibrated using a medical LINAC. The energy measurement accuracy in the 6–20 MeV range is proven to be better than 10%. The radiation dose has been calibrated by a water-equivalent phantom, RW3, showing a linear response of the method within 2% in the 0.05–0.5 mGy/pulse range.
ISSN:2304-6732

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