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Descripción
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| In homeland security, neutron detection is used to prevent the smuggling of Special Nuclear Materials. Thermal neutrons are normally detected with 3He proportional counters, in the Radiation Portal Monitors, RPMs, however due to the 3He shortage new procedures are being studied. In this work Monte Carlo methods, using the MCNP6 code, have been used to study the neutron detection features of a 10B+ZnS(Ag) under real conditions inside of a RPM. The performance for neutron detection was carried out for 252Cf, 238U and 239Pu under different conditions. In order to mimic an actual situation occurring at border areas, a sample of SNM sited inside a vehicle was simulated and the RPM with 10B+ZnS(Ag) response was calculated. At 200 cm the 10B+ZnS(Ag) on RPM response is close to 2.5 cps-ng 252Cf, when the 252Cf neutron source is shielded with 0.5 cm-thick lead and 2.5 cm-thick polyethylene fulfilling the ANSI recommendations. Three different geometries of neutron detectors of 10B+ZnS(Ag) in a neutron detection system in RPM were modeled. Therefore, the 10B+ZnS(Ag) detectors are an innovative and viable replacement for the 3He detectors in the RPM. | |
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Internacional
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Si |
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Nombre congreso
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XVI International Symposium on Solid State Dosimetry |
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Tipo de participación
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970 |
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Lugar del congreso
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Chiapas Mexico |
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Revisores
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Si |
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ISBN o ISSN
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DOI
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Fecha inicio congreso
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24/09/2016 |
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Fecha fin congreso
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28/09/2016 |
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Desde la página
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1 |
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Hasta la página
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17 |
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Título de las actas
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Mesoamerican Centre for Theoretical Physics |