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Design and commissioning of a neutron counter adapted to high-intensity laser matter interactions

Abstract : The advent of multi-PW laser facilities world-wide opens new opportunities for nuclear physics. With this perspective, we developed a neutron counter taking into account the specifics of a high-intensity laser environment. Using GEANT4 simulations and prototype testings, we report on the design of a modular neutron counter based on boron-10 enriched scintillators and a high-density polyethylene moderator. This detector has been calibrated using a plutonium-beryllium neutron source and commissioned during an actual neutron-producing laser experiment at the LULI2000 facility (France). An overall efficiency of 4.37(59)% has been demonstrated during calibration with a recovery time of a few hundred microseconds after laser-plasma interaction.
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https://hal-insu.archives-ouvertes.fr/insu-03717913
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Submitted on : Friday, July 8, 2022 - 1:54:20 PM
Last modification on : Saturday, July 9, 2022 - 3:04:59 AM

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V. Lelasseux, P.-A. Söderström, S. Aogaki, K. Burdonov, M. Cerchez, et al.. Design and commissioning of a neutron counter adapted to high-intensity laser matter interactions. Review of Scientific Instruments, 2021, 92, ⟨10.1063/5.0057828⟩. ⟨insu-03717913⟩

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