A gated LaBr 3 (Ce) detector for border protection applications

Asénath Étilé Étilé (1) , David Denis-Petit (1) , Laurent Gaudefroy (1) , Vincent Méot (1) , Olivier Roig (1)

1 DAM/DIF - DAM Île-de-France

We report on the dedicated implementation of the blocking technique for a LaBr(Ce) detector as well as associated electronics and data acquisition system for border protection applications. The detector is meant to perform delayed -ray spectroscopy of fission fragments produced via photofission induced by a high intensity pulsed photon beam. The gating technique avoids saturation of the detection chain during irradiation. The resulting setup allows us to successfully perform delayed -ray spectroscopy starting only 30 ns after the gating operation. The measured energy resolution ranges from 5% to 6.5% at 662 keV depending on the -ray detection time after the gating operation

Mots clés: Gating technique; LaBr3(Ce) scintillator; Digital signal processing

Domaines: Instrumentations et Détecteurs [physics.ins-det]; Physique Nucléaire Expérimentale [nucl-ex]

Asénath Étilé Étilé, David Denis-Petit, Laurent Gaudefroy, Vincent Méot, Olivier Roig. A gated LaBr 3 (Ce) detector for border protection applications. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2018, 877, pp.323-327. ⟨10.1016/j.nima.2017.08.053⟩. ⟨cea-01993942⟩