Bedogni, R; Calamida, A; Napolitano, T; Cantone, C; Fontanilla, A M; Castro Campoy, A I; Abbatini, G; Pietropaolo, A; Monti, V; Mafucci, E M; Bunce, M; Thomas, D; Gomez-Ros, J M; Altieri, S (2023) The NCT-WES directional neutron spectrometer: validation of the response with monoenergetic neutron fields. The European Physical Journal Plus, 138. 270

Preview

Text eid9859.pdf - Published Version Available under License Creative Commons Attribution. Download (1MB) | Preview

Abstract

A directional neutron spectrometer named NCT-WES (Neutron Capture TherapyWide Energy Spectrometer) was developed for quality assurance of the therapeutic neutron beam in NeutronCapture Therapy (NCT).NCT-WESoperates as a “parallelized” Bonner spheres spectrometer, embedding six semiconductor-based thermal neutron detectors in a collimated cylindrical moderator. With the objective of validating the simulation model used to derive its response matrix, irradiations in reference monoenergetic fields were performed at National Physical Laboratory (UK). As the energy distributions of neutron beams in NCT extend from keV to a few MeV, monoenergetic fields in this domain were chosen, namely 71.5 keV, 144.2 keV, 565.1 keV, 841.9 keV and 1200.4 keV. The results of the experiment confirm the correctness of the NCT-WES simulation model, within an overall uncertainty lower than ± 2%.

Item Type:	Article
Subjects:	Ionising Radiation > Neutron Metrology
Divisions:	Medical, Marine & Nuclear
Identification number/DOI:	10.1140/epjp/s13360-023-03840-6
Last Modified:	14 Nov 2023 14:08
URI:	https://eprintspublications.npl.co.uk/id/eprint/9859