OLIVEIRA, L.P.SOUZA, A.P.S.YOKAICHIYA, F.GENEZINI, F.A.FRANCO, M.K.K.D.2021-08-132021-08-132021OLIVEIRA, L.P.; SOUZA, A.P.S.; YOKAICHIYA, F.; GENEZINI, F.A.; FRANCO, M.K.K.D. Study on s-shaped guide using mcstas software. <b>Brazilian Journal of Radiation Sciences</b>, v. 9, n. 1A, p. 1-8, 2021. DOI: <a href="https://dx.doi.org/10.15392/bjrs.v9i1A.1549">10.15392/bjrs.v9i1A.1549</a>. Disponível em: http://repositorio.ipen.br/handle/123456789/32152.2319-0612http://repositorio.ipen.br/handle/123456789/32152Monte Carlo simulations are performed for a vertical S-shaped neutron guide for the cold neutron sources of the FRM-II, HZB and PSI reactors through the McStas software. The aim of our study is investigate a relation between the cutoff in the cold neutron spectrum and the sources. Results for the neutron flux at the sample position are presented for different supermirrors with m = 1, 2 and 3. The vertical S-shaped neutron guides additionally provide a vertical displacement between beam hole and sample position, which can facilitate the implementation and manipulation of sample environments.1-8openAccesscold neutronsfrm-ii reactorm codesmonte carlo methodneutron fluxneutron sourcessmall angle scatteringArtigo de periódico1A910.15392/bjrs.v9i1A.15490000-0002-6318-6805https://orcid.org/0000-0002-6318-6805Sem Percentil