A diffractometer project for Brazilian Multipurpose Reactor (RMB): McStas simulations and instrument optimization

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
  • Fabiano Yokaichiya Universidade Federal do Paraná - UFPR, departamento de física.
  • Frederico Antonio Genezini Instituto de Pesquisas Energéticas e Nucleares - IPEN - Projeto do Reator Multipropósito Brasileiro - RMB
  • Margareth Kazuyo Kobayashi Dias Franco Instituto de Pesquisas Energéticas e Nucleares - IPEN - Projeto do Reator Multipropósito Brasileiro - RMB

DOI:

https://doi.org/10.15392/bjrs.v9i1A.1499

Keywords:

diffractometer, McStas simulations, neutron flux

Abstract

High-resolution diffractometer is one of the first instruments of the set of 15 priority neutron scattering instruments to be installed at the Brazilian Multipurpose Reactor (RMB). A basic project of this instrument consists of the existence of three guides through which neutrons pass from source to sample to guarantee maximum neutron flux at the sample position. In this study, we investigate guide geometry performance considering fixed diffractometer geometry and spatial arrangement. Comparisons between different guide shapes and supermirrors are performed using software based on the Monte Carlo method, McStas. Our conclusion shows that a better solution is splitting the initial flux into two different guides to obtain the maximum flux at the sample position. 

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References

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Published

2021-04-30

How to Cite

Souza, A. P. dos S., de Oliveira, L. P., Yokaichiya, F., Genezini, F. A., & Franco, M. K. K. D. (2021). A diffractometer project for Brazilian Multipurpose Reactor (RMB): McStas simulations and instrument optimization. Brazilian Journal of Radiation Sciences, 9(1A). https://doi.org/10.15392/bjrs.v9i1A.1499

Issue

Section

The Meeting on Nuclear Applications (ENAN) 2019

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