1. Validation of an indium-based multi-shell neutron spectrometer.
- Author
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Asuncion-Astronomo A, Balderas CV, Hila FC, Dela Cruz RMM, Dingle CAM, Solmeron WB, and Bedogni R
- Abstract
A multi-shell neutron spectrometer with indium foil detector (In-MuNS) was developed to evaluate intense neutron fields that are generated in medical accelerators. The response matrix of this new spectrometer was calculated from 1 meV to 100 MeV using MCNP5 v.1.6 with ENDF/B-VIII.0 nuclear data. An experiment with a
252 Cf source with known emission rate was performed to validate the computational model of the spectrometer. This included detailed modelling of the irradiation room to evaluate the room-scattered field. The contribution of scattered neutrons to the induced activity in the foil reached 30% for the smallest sphere configuration (diameter 5.0 cm). The quotient between the experimental and simulated foil activity remained satisfactorily constant (1.03±0.04) as the sphere diameter varied, demonstrating the validity of the simulation model. In-MuNS proved to be a portable and compact alternative to conventional Bonner spheres., (Copyright © 2021 Elsevier Ltd. All rights reserved.)- Published
- 2021
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