Optimization of a polarizer device for SANS-2 instrument at the PIK reactor

International Conference on Polarised Neutrons for Condensed Matter Investigations

Pavlov, K.A.^1,2 ; Konik, P.I.^1,2 ; Syromyatnikov, V.G.^1,2 ; Grigoriev, S.V.^1,2 ; Moskvin, E.V.^1,2

Petersburg Nuclear Physics Institute NRC KI, Gatchina, 188300, Russia^1

Saint Petersburg State University, St-Petersburg

199034, Russia^2

关键词: Beam polarization;    Device performance;    Input parameter;    Supermirrors;    Wavelength ranges;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/862/1/012020/pdf
DOI  :  10.1088/1742-6596/862/1/012020

来源: IOP

【 摘 要 】

A polarizer of V-cavity type for small angle diffractometer was considered. The device performance was simulated using McStas ray tracing package with the input parameters for supermirrors of PNPI home production (CoFe/TiZr, m = 2.13). Two replaceable devices with lengths 0.75 m and 1.8 m are proposed to cover the wavelength range 4-25 Å with beam polarization not less than 95%.