Simulating Araponga - The High-Resolution Diffractometer of Brazilian Multipurpose Reactor

Alexandre Pinho dos Santos Souza; Luiz Paulo de Oliveira; Frederico Antonio Genezini; Adimir dos Santos

doi:10.15392/2319-0612.2022.1861

Authors

Alexandre Pinho dos Santos Souza Instituto de Pesquisas Energéticas e Nucleares - IPEN - Projeto do Reator Multipropósito Brasileiro - RMB
Luiz Paulo de Oliveira Instituto de Pesquisas Energéticas e Nucleares - IPEN - Projeto do Reator Multipropósito Brasileiro - RMB
Frederico Antonio Genezini Instituto de Pesquisas Energéticas e Nucleares - IPEN - Projeto do Reator Multipropósito Brasileiro - RMB
Adimir dos Santos Instituto de Pesquisas Energéticas e Nucleares - IPEN - Projeto do Reator Multipropósito Brasileiro - RMB

DOI:

https://doi.org/10.15392/2319-0612.2022.1861

Keywords:

Brazilian Multipurpose Reactor, Monte Carlo Simulations, High-Resolution Diffractometer

Abstract

The Brazilian Multipurpose Reactor (RMB) is a fundamental project that aims to turn Brazil into a self-sufficient country in the production of radioisotopes and radiopharmaceuticals to supply the Unified Health System (SUS) as much as the private institutions. In addition, the RMB project describes other applications as irradiation and testing of nuclear fuels and structural material analysis, for instance. There are many techniques in the project to study structural aspects of materials, where neutron diffraction represents one of the priorities for implementation. This technique will take place mainly on two diffractometers on Thermal Neutron Guide 1 (TG1), namely Araponga, a high-resolution diffractometer, and Flautim, a high-intensity diffractometer. In this work, we study the performance of the Araponga diffractometer through McStas simulations with input produced by the MCNP code of the RMB core. We investigate the neutron flux values considering a state-of-art high-resolution diffractometer, and the results are promising since some simulated scenarios present values compatible with high-intensity devices.

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References

J. A. PERROTTA and A. J. SOARES, “RMB: The New Brazilian Multipurpose Research Reactor”, International Journal for Nuclear Power, vol. 60, pp.30-34 (2015).

J. A. PERROTTA et al., “Future Perspectives for Neutron Beam Utilization in Brazil”, Neutron News, vol. 25:4, pp.3-5 (2015). DOI: https://doi.org/10.1080/10448632.2014.955415

A. P. S. SOUZA et al., “Neutron Guide Building Instruments of the Brazilian Multipurpose Reactor (RMB) Project”, Journal of Instrumentation, vol. 15, pp.04011-04011 (2020). DOI: https://doi.org/10.1088/1748-0221/15/04/P04011

J. I. LANGFORD and D. LOUER, “Powder Diffraction”, Reports on Progress in Physics, vol. 59, pp. 131–234 (1996). DOI: https://doi.org/10.1088/0034-4885/59/2/002

B. A. HUNTER, “Report on Neutron Powder Diffraction for the Australian Replacement Research Reactor”, Neutron Powder Diffraction Workshop, Sydney, 17-18 October, vol. 1, pp. 1–26 (2000).

A. W. HEWAT, “Design for a conventional high-resolution neutron powder diffractometer”, Nuclear Instruments and Methods, vol. 127, pp.361-370 (1975). DOI: https://doi.org/10.1016/S0029-554X(75)80006-1

K. D. LISS et al., “Echidna: the new high-resolution powder diffractometer being built at OPAL”, Physica B, vol. 385, pp. 1010–1012 (2006). DOI: https://doi.org/10.1016/j.physb.2006.05.322

K. LEFMANN and K. NIELSEN, “A general software package for neutron ray-tracing simulations”, Neutron News, vol. 10:3, pp. 20-23 (1999). DOI: https://doi.org/10.1080/10448639908233684

A. P. S. SOUZA et al., “A diffractometer project for Brazilian Multipurpose Reactor (RMB): McStas simulations and instrument optimization”, Brazilian Journal of Radiation Sciences, vol. 9, pp. 1-17 (2021). DOI: https://doi.org/10.15392/bjrs.v9i1A.1499

“Monte Carlo simulations of the S-shaped neutron guides with asymmetric concave and convex surface coatings”, http://arxiv.org/abs/2106.13916 (2021).