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Investigation of the neutron-gamma ray discrimination performance at low neutron energy of a solution-grown stilbene scintillator

Abstract : The results of experiments performed with a Ø25 x 25 mm solution-grown stilbene crystal in mono-energetic neutron fields in the 80-to-230 keV energy range are presented. The goal of the measurements, performed at the AMANDE facility, was to explore the capabilities of this organic scintillator to measure neutrons at the lowest possible energy with good pulse shape discrimination (PSD). The time of flight (TOF) technique was used in order to help with the neutron-gamma discrimination. The data are collected via a programmable digital acquisition (DAQ) system CAEN DT7530 using the software CoMPASS with the charge comparison method (CCM). The data are analysed using postprocessing codes developed in the ROOT environment. The results show that the stilbene detector has discrimination capabilities for energies as low as 80 keV.
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https://hal-cea.archives-ouvertes.fr/cea-02614117
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Submitted on : Wednesday, May 20, 2020 - 4:44:34 PM
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A. Dichicco, M. Petit, R. Jacqmin, V. Gressier, B. Stout. Investigation of the neutron-gamma ray discrimination performance at low neutron energy of a solution-grown stilbene scintillator. ANIMMA 2019 - International conference on Advancements in Nuclear Instrumentation Measurement Methods and their Applications, Jun 2019, Portoro, Slovenia. ⟨cea-02614117⟩

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