TY  - JOUR
AU  - Manoshin, S.
AU  - Rubtsov, A.
AU  - Bodnarchuk, V.
AU  - Mattauch, S.
AU  - Ioffe, A.
TI  - Extension of the VITESS polarized neutron suite towards the use of imported magnetic field distributions
JO  - Journal of physics / Conference Series
VL  - 528
SN  - 1742-6596
CY  - Bristol
PB  - IOP Publ.
M1  - FZJ-2015-03399
SP  - 012033
PY  - 2014
AB  - 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.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000340245000033
DO  - DOI:10.1088/1742-6596/528/1/012033
UR  - https://juser.fz-juelich.de/record/201089
ER  -