PHITS calculation of gamma doses in the PRR-1 SATER facility

Authors

Jowi Rapha P. Cruz ⋅ PH Physics Department, De La Salle University, Manila
Alvie A. Astronomo ⋅ PH Nuclear Research Operations Section, DOST−Philippine Nuclear Research Institute
Gil Nonato C. Santos ⋅ PH Physics Department, De La Salle University, Manila
Ryan U. Olivares ⋅ PH Nuclear Research Operations Section, DOST−Philippine Nuclear Research Institute

Abstract

A computational model of the Philippine Research Reactor-1 (PRR-1) Subcritical Assembly for Training, Education, and Research (SATER) was developed using the Particle and Heavy Ion Transport code System (PHITS). Photon transport of 0.6617 MeV gamma rays was then simulated using PHITS to calculate gamma doses at specific locations in the PRR-1 SATER tank. Simulations were performed with 10⁸ particles. The results of the PHITS simulations were compared to the measured doses in the facility to evaluate the accuracy of the computational model in predicting the gamma radiation levels of the PRR-1 SATER. On average, gamma doses calculated from the PHITS model are higher by a factor of 1.07 ± 0.22 compared to measured values. These results provide a slightly conservative but closer estimate of gamma doses in the facility compared to calculation results that were obtained prior to the commissioning of the facility, which overestimated the doses by a factor of ~200.

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Issue

2023: Proceedings of the 41st Samahang Pisika ng Pilipinas Physics Conference

Article ID

SPP-2023-2C-06

Section

High Energy and Nuclear Physics

Published

2023-06-26

How to Cite

[1]

JRP Cruz, AA Astronomo, GNC Santos, and RU Olivares, PHITS calculation of gamma doses in the PRR-1 SATER facility, Proceedings of the Samahang Pisika ng Pilipinas 41, SPP-2023-2C-06 (2023). URL: https://proceedings.spp-online.org/article/view/SPP-2023-2C-06.