TY  - JOUR
AU  - Salhi, Zahir
AU  - Babcock, Earl
AU  - Bingöl, Kendal
AU  - Starostin, Denis
AU  - Pistel, Patrick
AU  - Lumma, Nils
AU  - Radulescu, Aurel
AU  - Ioffe, Alexander
TI  - An ultra-compact in-situ 3 He polarizer for high Q-range SANS: on-beam test and future upgrades
JO  - Journal of physics / Conference Series
VL  - 862
SN  - 1742-6596
CY  - Bristol
PB  - IOP Publ.
M1  - FZJ-2018-00749
SP  - 012022 -
PY  - 2017
AB  - 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.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000417442500022
DO  - DOI:10.1088/1742-6596/862/1/012022
UR  - https://juser.fz-juelich.de/record/842525
ER  -