Conceptual Design of the ARMAN Neutron Reflectometer at the WWR-K Reactor (INP, Almaty, Kazakhstan)

Abstract

The concept of the new experimental setup − neutron reflectometer ARMAN (Almaty Reflectometer of MonochromАtic Neutrons) is presented. The instrument is to be placed at beamline 4 with thermal neutrons at the WWR-K reactor of the Institute of Nuclear Physics, Almaty, Kazakhstan. The instrument features a horizontal scattering geometry with a vertically oriented sample with the size of beam 2×50 mm². The reflectometer will operate with a monochromatic neutron beam in two modes: with and without polarization of the incident beam. The monochromatization will be provided by a double-crystal monochromator of pyrolytic graphite plates with the working wavelength range of 1.8−2.8 Å and expected resolution ∆λ/λ in the range of 1-3%. The schematics and main elements together with the numerical estimates of the expected neutron flux in different places of the beamline are discussed.
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Recommended Citation
Nazarov, K.M.; Kulikbayeva, D.; Nurullin, R.; Mukhametuly, B.; Bekbayev, , A. K.; Kenessarin, M.; Bodnarchuk, V.I.; Churakov, A.V.; Zernin, N.D.; Murashkevich, S.M.; Petukhova, T.B.; Avdeev, M.V.; and Yerdauletov, Meir (2025) "Conceptual Design of the ARMAN Neutron Reflectometer at the WWR-K Reactor (INP, Almaty, Kazakhstan)," Eurasian Journal of Physics and Functional Materials: Vol. 9: No. 4, Article 3.
DOI: https://doi.org/10.69912/2616-8537.1260