%0 Journal Article
%A Salhi, Zahir
%A Babcock, Earl
%A Bingöl, Kendal
%A Starostin, Denis
%A Pistel, Patrick
%A Lumma, Nils
%A Radulescu, Aurel
%A Ioffe, Alexander
%T An ultra-compact in-situ 3 He polarizer for high Q-range SANS: on-beam test and future upgrades
%J Journal of physics / Conference Series
%V 862
%@ 1742-6596
%C Bristol
%I IOP Publ.
%M FZJ-2018-00749
%P 012022 -
%D 2017
%X We present an ultra-compact 3He polarizer to be used as a polarization analyzer for separation of incoherent background for soft matter research. The 3He will be polarized in-situ within a very compact, 18 cm long, magnetic cavity that can be placed between the sample and the detector tank of small-angle scattering diffractometer KWS2 at MLZ [1]. This allows for the angular coverage of 38°, that corresponds to the maximal momentum transfer Qmaxλ=0.85 Å−1 for neutrons with wavelength λ=4.5Å. The Qmax can be extended to 1.28 Å−1 following the recent upgrade of KWS2 for neutron wavelength λ=3Å. The optical pumping will be done by the diode laser array bar frequency narrowed by the ultra-compact volume Bragg grating. The full system will be readily hand transportable and thus useful as an instrument add-on.
%F PUB:(DE-HGF)16
%9 Journal Article
%U <Go to ISI:>//WOS:000417442500022
%R 10.1088/1742-6596/862/1/012022
%U https://juser.fz-juelich.de/record/842525