Monte Carlo Simulation of Neutron and Gamma Ray Behavior in the PGAA System of the TRIGA Reactor Using the PHITS Code

Authors

  • Jamila Yousfi Faculty of Science, Physics Department, Sidi Mohamed Ben Abdellah University, Morocco.
  • Abdessamad Didi National Energy Center of Nuclear Science and Technolog, Department of physics Faculty of Science Dhar Mehraz, Universty of Sidi Mohamed Ben Abdellah, 30000 Fez, Morocco https://orcid.org/0000-0003-4225-9232
  • Hamane Lemziouka Associate Professor, Faculty of Science, Physics Department, Sidi Mohamed Ben Abdellah University, Morocco
  • Lamiae Mrharrab Associat Professor, Faculty of Science, Physics Department, Sidi Mohamed Ben Abdellah University, Morocco.
  • Hamid Amsil National Centre for Nuclear Energy, Sciences and Technology (CNESTEN), Rabat, Morocco
  • Hassane El Bakkouri Department of Physics, Faculty of Science, Ibn Tofail University, Kenitra Morocco
  • Hamid Bounouira National Centre for Nuclear Energy, Sciences and Technology (CNESTEN), Rabat, Morocco.
  • Otman JAÏ Laboratory of Technologies and Industrial Services, Higher School of Technology, Sidi Mohamed Ben Abdellah University, Fez, Morocco

DOI:

https://doi.org/10.3329/bjphy.v32i2.81761

Keywords:

Neutron-gamma, Monte Carlo, PHITS, Sapphire, Collimator, Closed shutter, Open shutter

Abstract

This study presents a detailed simulation of the neutron and photon flux distribution as well as their energy spectra within the PGAA system of the Moroccan TRIGA Mark II reactor. The simulation was carried out using the PHITS Monte Carlo code. Several configurations were analyzed, particularly the collimator, the sapphire filter, the closed shutter, and the open shutter. The simulation results show that the sapphire filter significantly attenuates gamma rays, thereby reducing contamination of the PGAA detector. The closed shutter configuration effectively blocks neutrons and photons, especially fast neutrons, while the open shutter configuration allows the complete passage of the neutron beam with well-collimated propagation, thus providing valuable information on the performance of the PGAA system.

Bangladesh Journal of Physics, Vol. 32, Issue 2, pp. 1 – 12, December 2025

 

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Author Biography

Jamila Yousfi, Faculty of Science, Physics Department, Sidi Mohamed Ben Abdellah University, Morocco.

PhD Student

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Published

2026-02-05

How to Cite

Yousfi, J., Didi, A., Lemziouka, H., Mrharrab, L., Amsil, H., El Bakkouri, H., … JAÏ, O. (2026). Monte Carlo Simulation of Neutron and Gamma Ray Behavior in the PGAA System of the TRIGA Reactor Using the PHITS Code. Bangladesh Journal of Physics, 32(2), 1–12. https://doi.org/10.3329/bjphy.v32i2.81761

Issue

Vol. 32 No. 2 (2025)

Section

Articles

License

Copyright (c) 2025 Abdessamad Didi, Jamila Yousfi, hamane.lmziouka@usmba.ac.ma, Lamiae Mrharrab, Hamid Amsil, Hassane El Bakkouri, Hamid Bounouira, Otman JAÏ

Creative Commons License

This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.