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@ARTICLE{Nemkovskiy:838624,
author = {Nemkovskiy, Kirill and Ioffe, Alexander and Su, Y. and
Babcock, E. and Schweika, W. and Brückel, Thomas},
title = {{S}imulation and optimization of a new focusing polarizing
bender for the diffuse neutrons scattering spectrometer
{DNS} at {MLZ}6{G}4},
journal = {Journal of physics / Conference Series},
volume = {862},
issn = {1742-6596},
address = {Bristol},
publisher = {IOP Publ.},
reportid = {FZJ-2017-07201},
pages = {012018 -},
year = {2017},
abstract = {We present the concept and the results of the simulations
of a new polarizer for the diffuse neutron scattering
spectrometer DNS at MLZ. The concept of the polarizer is
based on the idea of a bender made from the stack of the
silicon wafers with a double-side supermirror polarizing
coating and absorbing spacers in between. Owing to its
compact design, such a system provides more free space for
the arrangement of other instrument components. To reduce
activation of the polarizer in the high intensity neutron
beam of the DNS spectrometer we plan to use the Fe/Si
supermirrors instead of currently used FeCoV/Ti:N ones.
Using the VITESS simulation package we have performed
simulations for horizontally focusing polarizing benders
with different geometries in the combination with the
double-focusing crystal monochromator of DNS. Neutron
transmission and polarization efficiency as well as the
effects of the focusing for convergent conventional
C-benders and S-benders have been analyzed both for
wedge-like and plane-parallel convergent geometries of the
channels. The results of these simulations and the
advantages/disadvantages of the various configurations are
discussed.},
cin = {JCNS (München) ; Jülich Centre for Neutron Science JCNS
(München) ; JCNS-FRM-II / JCNS-2 / PGI-4 / JARA-FIT},
ddc = {530},
cid = {I:(DE-Juel1)JCNS-FRM-II-20110218 /
I:(DE-Juel1)JCNS-2-20110106 / I:(DE-Juel1)PGI-4-20110106 /
$I:(DE-82)080009_20140620$},
pnm = {6G15 - FRM II / MLZ (POF3-6G15) / 6G4 - Jülich Centre for
Neutron Research (JCNS) (POF3-623) / 524 - Controlling
Collective States (POF3-524) / 6212 - Quantum Condensed
Matter: Magnetism, Superconductivity (POF3-621)},
pid = {G:(DE-HGF)POF3-6G15 / G:(DE-HGF)POF3-6G4 /
G:(DE-HGF)POF3-524 / G:(DE-HGF)POF3-6212},
experiment = {EXP:(DE-MLZ)DNS-20140101},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000417442500018},
doi = {10.1088/1742-6596/862/1/012018},
url = {https://juser.fz-juelich.de/record/838624},
}