作者
JM Gómez-Ros, R Bedogni, M Moraleda, A Esposito, Andrea Pola, MV Introini, G Mazzitelli, L Quintieri, B Buonomo
发表日期
2012/6/11
期刊
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
卷号
677
页码范围
4-9
出版商
North-Holland
简介
This communication describes the design specifications for a neutron spectrometer consisting of 31 thermal neutron detectors, namely Dysprosium activation foils, embedded in a 25cm diameter polyethylene sphere which includes a 1cm thick lead shell insert that degrades the energy of neutrons through (n,xn) reactions, thus allowing to extension of the energy range of the response up to hundreds of MeV neutrons. The new spectrometer, called SP2 (SPherical SPectrometer), relies on the same detection mechanism as that of the Bonner Sphere Spectrometer, but with the advantage of determining the whole neutron spectrum in a single exposure. The Monte Carlo transport code MCNPX was used to design the spectrometer in terms of sphere diameter, number and position of the detectors, position and thickness of the lead shell, as well as to obtain the response matrix for the final configuration. This work focuses …
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JM Gómez-Ros, R Bedogni, M Moraleda, A Esposito… - Nuclear Instruments and Methods in Physics Research …, 2012