Monte Carlo code application to the study of 3D neutrons distribution in a radiotherapy bunker and validation with experimental measurements

Juste, B.; Morató, S.; Garcı́a, Carmen; Miró, R.; Verdú, G.

doi:10.1016/j.nima.2018.09.083

Cited by 2 publications

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“…The results of both methods were significantly consistent, which confirms the capability of the MC method. 6 The atomic number and density of the elements used in the concrete composition affect the attenuation of high-energy photons. 7 Studies have shown that adding high-density materials such as Barite, Galena, Colemanite, Lead-oxide and perlite minerals to the concrete mixture improved the linear attenuation coefficient ( ) and decreases half-value layer (HVL) and mean free path (MFP) values.…”

Section: Introductionmentioning

confidence: 99%

Monte Carlo Calculation of linear attenuation coefficients and photon scattering properties of novel concretes loaded with Osmium, Iridium and Barite nanoparticles

Jou

Mesbahi

Zamiri³

et al. 2021

Polish Journal of Medical Physics and Engineering

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Introduction: Recent studies have shown that the use of high-density nanoparticles (NPs) in concrete composition improves its radiation shielding properties. In the present study, the linear attenuation coefficients and photon scattering properties of newly developed high-density Nano-concretes have been calculated using the MCNPX Monte Carlo code. Material and methods: The shielding properties of Nano-concretes containing 10%, 20%, and 30% weight percentage of Osmium, Iridium and Barite NPs (100 nm) as well as ordinary concrete were investigated. The 6 and 18 MV photon beams of Varian Linac and 60 Co photons were used for simulation. Photon scattering flux was calculated for all Nano-concretes with 30 wt% of NPs and ordinary concrete at different angles. Results: In general, by adding Iridium, Osmium and Barite NPs to ordinary concrete, the linear attenuation coefficients increased. Despite a lower density relative to Iridium and Osmium, Nano-concretes containing Barite exhibited a higher linear attenuation coefficient due to their higher electron density. Conclusions: The results revealed a dependence between the scattered photon flux and the effective atomic number of Nano-concretes. With increasing the atomic number of fillers, the intensity of the scattered photon flux enlarged. Also, the scattered flux was higher for all types of concretes at 180 degrees relative to other angles.

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Section: Introductionmentioning

confidence: 99%

Monte Carlo Calculation of linear attenuation coefficients and photon scattering properties of novel concretes loaded with Osmium, Iridium and Barite nanoparticles

Jou

Mesbahi

Zamiri³

et al. 2021

Polish Journal of Medical Physics and Engineering

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“…These kind of problems are very common in shielding calculations to calculate the least amount of shielding material minimizing the neutron or photon dose [Morató et al, 2015]. This methodology could serve to design radiotherapy bunkers [Juste et al, 2018a] or to know what components of the radiotherapy treatment devices receive more radiation than other to select the adequate materials [Juste et al, 2018b, Morató et al, 2016.…”

Section: Scientific Contributionsmentioning

confidence: 99%

Contributions to solve the Multi-group Neutron Transport equation with different Angular Approaches

Rafet¹

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The most accurate way to know the movement of the neutrons through matter is achieved by solving the Neutron Transport Equation. Three different approaches to solve this equation have been investigated in this thesis: Discrete Ordinates Neutron Transport Equation, Neutron Diffusion Equation and Simplified Spherical Harmonics Equations.In order to solve the equations, different schemes of the Finite Differences Method were studied. The solution of these equations describes the population of neutrons and the occurred reactions inside a nuclear system. These variables are related with the flux and power, fundamental parameters for the Nuclear Safety Analysis.Por último, pero no menos importante, agradezco el apoyo de mi familia, mis hermanos y mi padre; y a los que me hacen sentir como tal, Jesús y Nati. Muy especialmente quiero dar las gracias a María, por estar siempre a mi lado e invitar a superarme. Finalmente, sería injusto no acordarme de mi madre a quien debo todo lo que soy.

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Monte Carlo code application to the study of 3D neutrons distribution in a radiotherapy bunker and validation with experimental measurements

Cited by 2 publications

References 4 publications

Monte Carlo Calculation of linear attenuation coefficients and photon scattering properties of novel concretes loaded with Osmium, Iridium and Barite nanoparticles

Monte Carlo Calculation of linear attenuation coefficients and photon scattering properties of novel concretes loaded with Osmium, Iridium and Barite nanoparticles

Contributions to solve the Multi-group Neutron Transport equation with different Angular Approaches

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