Time-of-flight Fourier UCN spectrometer

We describe a new time-of-flight Fourier spectrometer for investigation of UCN diffraction by a moving grating. The device operates in the regime of a discrete set of modulation frequencies. The results of the first experiments show that the spectrometer may be used for obtaining UCN energy spectra...

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Bibliographic Details
Published in:Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment Accelerators, spectrometers, detectors and associated equipment, 2016-05, Vol.819, p.67-72
Main Authors: Kulin, G.V., Frank, A.I., Goryunov, S.V., Kustov, D.V., Geltenbort, P., Jentschel, M., Lauss, B., Schmidt-Wellenburg, P.
Format: Article
Language:English
Subjects:
Accelerators
Devices
Diffraction gratings
Energy spectra
Fourier analysis
Gratings (spectra)
Modulation
Moving diffraction grating
Neutron interference filters
Spectrometers
Time-of-flight Fourier spectrometry
Ultra-cold neutrons
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Summary:We describe a new time-of-flight Fourier spectrometer for investigation of UCN diffraction by a moving grating. The device operates in the regime of a discrete set of modulation frequencies. The results of the first experiments show that the spectrometer may be used for obtaining UCN energy spectra in the energy range of 60–200neV with a resolution of about 5neV. The accuracy of determination of the line position was estimated to be several units of 10−10eV.
ISSN:0168-9002
1872-9576
DOI:10.1016/j.nima.2016.02.091