Polarization analysis for the thermal chopper spectrometer TOPAS

Polarization analysis for the thermal chopper spectrometer TOPAS

We report on the progress of the construction of the thermal time-of-flight spectrometer with polarization analysis TOPAS at the Mayer-Leibnitz Zentrum (MLZ). The instrument components approach the status to be ready for installation. The special feature of the instrument is its capability for wide...

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Main Authors: Voigt Jörg, Soltner Helmut, Babcock Earl, Aldus Robert J., Salhi Zahir, Gainov Ramil R., Brückel Thomas
Format: Article
Language:English
Published: EDP Sciences 2015-01-01
Series:EPJ Web of Conferences
Online Access:http://dx.doi.org/10.1051/epjconf/20158303016
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spelling doaj-afef0aace2704c4f98c9bf13d3e1b9982021-08-02T05:03:04ZengEDP SciencesEPJ Web of Conferences2100-014X2015-01-01830301610.1051/epjconf/20158303016epjconf-Qens-Wins2014_03016Polarization analysis for the thermal chopper spectrometer TOPASVoigt Jörg0Soltner Helmut1Babcock Earl2Aldus Robert J.3Salhi Zahir4Gainov Ramil R.Brückel Thomas5Jülich Centre for Neutron Science JCNS and Peter Grünberg Institut PGI, JARA-FITCentral Institute of Engineering, Electronics and AnalyticsJülich Centre for Neutron Science JCNS and Peter Grünberg Institut PGI, JARA-FITJülich Centre for Neutron Science JCNS and Peter Grünberg Institut PGI, JARA-FITJülich Centre for Neutron Science JCNS and Peter Grünberg Institut PGI, JARA-FITJülich Centre for Neutron Science JCNS and Peter Grünberg Institut PGI, JARA-FIT We report on the progress of the construction of the thermal time-of-flight spectrometer with polarization analysis TOPAS at the Mayer-Leibnitz Zentrum (MLZ). The instrument components approach the status to be ready for installation. The special feature of the instrument is its capability for wide-angle polarization analysis in the thermal spectral range. Here we describe a novel approach to rotate the neutron spin adiabatically into the X, Y or Z direction of the laboratory frame by combination of permanent magnets aligned as Halbach rings and electrically generated fields. Despite the severe spatial restrictions the design exhibits a very high adiabaticity and interacts only weakly with the coil layout for the analyzing 3He spin filter cell (SFC). http://dx.doi.org/10.1051/epjconf/20158303016
collection DOAJ
language English
format Article
sources DOAJ
author Voigt Jörg
Soltner Helmut
Babcock Earl
Aldus Robert J.
Salhi Zahir
Gainov Ramil R.
Brückel Thomas
spellingShingle Voigt Jörg
Soltner Helmut
Babcock Earl
Aldus Robert J.
Salhi Zahir
Gainov Ramil R.
Brückel Thomas
Polarization analysis for the thermal chopper spectrometer TOPAS
EPJ Web of Conferences
author_facet Voigt Jörg
Soltner Helmut
Babcock Earl
Aldus Robert J.
Salhi Zahir
Gainov Ramil R.
Brückel Thomas
author_sort Voigt Jörg
title Polarization analysis for the thermal chopper spectrometer TOPAS
title_short Polarization analysis for the thermal chopper spectrometer TOPAS
title_full Polarization analysis for the thermal chopper spectrometer TOPAS
title_fullStr Polarization analysis for the thermal chopper spectrometer TOPAS
title_full_unstemmed Polarization analysis for the thermal chopper spectrometer TOPAS
title_sort polarization analysis for the thermal chopper spectrometer topas
publisher EDP Sciences
series EPJ Web of Conferences
issn 2100-014X
publishDate 2015-01-01
description We report on the progress of the construction of the thermal time-of-flight spectrometer with polarization analysis TOPAS at the Mayer-Leibnitz Zentrum (MLZ). The instrument components approach the status to be ready for installation. The special feature of the instrument is its capability for wide-angle polarization analysis in the thermal spectral range. Here we describe a novel approach to rotate the neutron spin adiabatically into the X, Y or Z direction of the laboratory frame by combination of permanent magnets aligned as Halbach rings and electrically generated fields. Despite the severe spatial restrictions the design exhibits a very high adiabaticity and interacts only weakly with the coil layout for the analyzing 3He spin filter cell (SFC).
url http://dx.doi.org/10.1051/epjconf/20158303016
work_keys_str_mv AT voigtjorg polarizationanalysisforthethermalchopperspectrometertopas
AT soltnerhelmut polarizationanalysisforthethermalchopperspectrometertopas
AT babcockearl polarizationanalysisforthethermalchopperspectrometertopas
AT aldusrobertj polarizationanalysisforthethermalchopperspectrometertopas
AT salhizahir polarizationanalysisforthethermalchopperspectrometertopas
AT gainovramilr polarizationanalysisforthethermalchopperspectrometertopas
AT bruckelthomas polarizationanalysisforthethermalchopperspectrometertopas
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