Characterization of the Photoneutron Flux Emitted by an Electron Accelerator Using an Activation Detector

Adrien Sari 1 Mathieu Agelou 2 Igor Bessieres 3 Frederick Carrel 1 Mehdi Gmar 4 Frederic Laine 1 Abdallah Lyoussi 5 Stephane Normand 1 Aime Ostrowsky 3 Line Sommier 3
1 LCAE - Laboratoire Capteurs et Architectures Electroniques
DM2I - Département Métrologie Instrumentation & Information : DRT/LIST/DM2I
2 LM2S - Laboratoire Modélisation et Simulation de Systèmes
DM2I - Département Métrologie Instrumentation & Information : DRT/LIST/DM2I
3 LNHB - Laboratoire National Henri Becquerel
DM2I - Département Métrologie Instrumentation & Information : DRT/LIST/DM2I
Abstract : Electron accelerators are intense photoneutron sources for nuclear waste packages characterization and homeland security applications. Moreover, when considering medical accelerators, photoneutrons can cause secondary cancers for patients and also expose hospital staff to deactivation gammas after the irradiation. In this study, we investigate photoneutrons properties according to average emission intensity, energy spectrum and spatial distribution. The latter parameter was measured using an activation detector and the other two parameters were determined by simulation, and then, evaluated by comparing absolute activation simulations and measurements. Our methodology was applied to characterize the photoneutron flux generated by two electron accelerators. Our study has shown that there is a strong probability for photonuclear cross-sections to be undervalued in the energy range studied.
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https://hal-cea.archives-ouvertes.fr/cea-01816679
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Submitted on : Friday, June 15, 2018 - 3:28:28 PM
Last modification on : Monday, May 13, 2019 - 11:15:47 AM

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Adrien Sari, Mathieu Agelou, Igor Bessieres, Frederick Carrel, Mehdi Gmar, et al.. Characterization of the Photoneutron Flux Emitted by an Electron Accelerator Using an Activation Detector. IEEE Transactions on Nuclear Science, Institute of Electrical and Electronics Engineers, 2013, 60 (2), pp.693-700. ⟨10.1109/TNS.2013.2251659⟩. ⟨cea-01816679⟩

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