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@ARTICLE{Manoshin:201089,
author = {Manoshin, S. and Rubtsov, A. and Bodnarchuk, V. and
Mattauch, S. and Ioffe, A.},
title = {{E}xtension of the {VITESS} polarized neutron suite towards
the use of imported magnetic field distributions},
journal = {Journal of physics / Conference Series},
volume = {528},
issn = {1742-6596},
address = {Bristol},
publisher = {IOP Publ.},
reportid = {FZJ-2015-03399},
pages = {012033},
year = {2014},
abstract = {Latest developments of the polarized neutron suite in the
VITESS simulation package allowed for simulations of
time-dependent spin handling devices (e.g. radio-frequency
(RF) flippers, adiabatic gradient RF-flippers) and the
instrumentation built upon them (NRSE, SESANS, MIEZE, etc.).
However, till now the magnetic field distribution in such
devices have been considered as "ideal" (sinusoidal,
triangular or rectangular), when the main practical interest
is in the use of arbitrary magnetic field distributions
(either obtained by the field mapping or by FEM
calculations) that may significantly influence the
performance of real polarized neutron instruments and is the
key issue in the practical use of the simulation packages.
Here we describe modified VITESS modules opening the
possibility to load the magnetic field 3-dimensional space
map from an external source (file). Such a map can be either
obtained by direct measurements or calculated by dedicated
FEM programs (such as ANSYS, MagNet, Maxwell or similar).
The successful use of these new modules is demonstrated by a
very good agreement of neutron polarimetric experiments with
performance of the spin turner with rotating magnetic field
and an adiabatic gradient RF-flipper simulated by VITESS
using calculated 3-dimensional field maps (using MagNet) and
magnetic field mapping, respectively.},
cin = {JCNS (München) ; Jülich Centre for Neutron Science JCNS
(München) ; JCNS-FRM-II / Neutronenstreuung ; JCNS-1 /
JCNS-2},
ddc = {530},
cid = {I:(DE-Juel1)JCNS-FRM-II-20110218 /
I:(DE-Juel1)JCNS-1-20110106 / I:(DE-Juel1)JCNS-2-20110106},
pnm = {54G - JCNS (POF2-54G24)},
pid = {G:(DE-HGF)POF2-54G24},
experiment = {EXP:(DE-MLZ)NOSPEC-20140101},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000340245000033},
doi = {10.1088/1742-6596/528/1/012033},
url = {https://juser.fz-juelich.de/record/201089},
}