Design and experimental tests of a novel neutron spin analyzer for wide angle spin echo spectrometers

Journal Article · Tue Sep 15 00:00:00 EDT 2009 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.3212669· OSTI ID:22051045

Fouquet, Peter; Farago, Bela; Andersen, Ken H; Bentley, Phillip M; Pastrello, Gilles; Sutton, Iain; Thaveron, Eric; Thomas, Frederic ^[1]; Moskvin, Evgeny ^[2]; Pappas, Catherine ^[2]

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1. Institut Laue-Langevin, BP 156, F-38042 Grenoble Cedex 9 (France)
2. Helmholtzzentrum Berlin, Glienicker Strasse 100, D-14109 Berlin (Germany)

This paper describes the design and experimental tests of a novel neutron spin analyzer optimized for wide angle spin echo spectrometers. The new design is based on nonremanent magnetic supermirrors, which are magnetized by vertical magnetic fields created by NdFeB high field permanent magnets. The solution presented here gives stable performance at moderate costs in contrast to designs invoking remanent supermirrors. In the experimental part of this paper we demonstrate that the new design performs well in terms of polarization, transmission, and that high quality neutron spin echo spectra can be measured.

• OSTI ID: 22051045
• Journal Information: Review of Scientific Instruments, Vol. 80, Issue 9; Other Information: (c) 2009 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0034-6748
• Country of Publication: United States
• Language: English

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
DESIGN
MAGNETIC FIELDS
NEUTRON DIFFRACTION
NEUTRON SPECTRA
NEUTRON SPECTROMETERS
NEUTRONS
PERFORMANCE
PERMANENT MAGNETS
POLARIZATION
SPIN
SPIN ECHO
TRANSMISSION