Experimental validation of a He-3 neutron detector Monte Carlo simulation model

  • Nicole Antoinette Sebastian Sabuag Department of Physical Sciences, Polytechnic University of the Philippines
  • Frederick Corpus Hila Philippine Nuclear Research Institute, Department of Science and Technology
  • Julius Federico Miko Jecong Philippine Nuclear Research Institute, Department of Science and Technology
  • Cheri Anne Manzano Dingle Philippine Nuclear Research Institute, Department of Science and Technology
  • Jennifer A Sagum Philippine Nuclear Research Institute, Department of Science and Technology
  • Neil Raymund D Guillermo Philippine Nuclear Research Institute, Department of Science and Technology

Abstract

Gas filled neutron detectors are used for a variety of applications. In this work, a Monte Carlo simulation model of a He-3 neutron detector was made in MCNP5. For experimental validation of the detector model, the measured neutron counts at different neutron fields were compared with simulated neutron counts. A Cf-252 radioactive source was used to produce the neutron field, while neutron scattering and absorbing materials were used to vary the neutron energy distribution of the field. Simulation results showed that the different materials were able to vary the original neutron energy spectrum of the Cf-252. Subsequently, the simulated and measured neutron counts of the detector exposed to the neutron fields, were found to agree with reasonable uncertainty. Following the validation, the He-3 model can be utilized in the design of practical applications using the detector.

Published
2019-05-19
How to Cite
[1]
N. A. Sabuag, F. Hila, J. F. Jecong, C. A. Dingle, J. Sagum, and N. R. Guillermo. Experimental validation of a He-3 neutron detector Monte Carlo simulation model, Proceedings of the Samahang Pisika ng Pilipinas 37, SPP-2019-PB-19 (2019). URL: https://paperview.spp-online.org/proceedings/article/view/SPP-2019-PB-19.