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@ARTICLE{Babcock:150947,
      author       = {Babcock, Earl and Ioffe, Alexander and Salhi, Zahir},
      title        = {{C}onsiderations on {Q}uality {F}actors from {S}uper
                      {M}irrors and $^{3}${H}e {S}pin {F}ilters for {P}olarization
                      {A}nalyzers on {W}ide {Q}-range {I}nstrumentation},
      journal      = {Journal of the Physical Society of Japan},
      volume       = {82},
      number       = {SI},
      issn         = {0031-9015},
      address      = {Tokyo},
      publisher    = {The Physical Society of Japan},
      reportid     = {FZJ-2014-00980},
      pages        = {SA030-1 - SA030-10},
      year         = {2013},
      abstract     = {Polarization analysis will be needed on modern neutron
                      scattering instrumentation designed to measure wide dynamic
                      Q-ranges. These instruments will often use large area
                      detectors and potentially multiple neutron wavelength bands
                      or pulsed sources. This will place high demands on the
                      method used for the polarization analysis. Two methods,
                      super mirrors and 3He neutron spin filters, are often
                      considered as the only solutions. In this paper we will
                      discuss the basic differences in these two methods for
                      applications measuring a wide dynamic Q-range via the use of
                      large area detectors. First we will present the simplified
                      theory for conceptual understanding of how both wide angle
                      SM and wide angle 3He analyzer devices perform. Then we
                      discuss how the properties of each method will effect
                      neutron performance taking into account practical
                      considerations. Such a conceptual understanding of the
                      basics of design, performance and limitations of the two
                      main options for such wide angle polarization analysis is
                      timely given the growing momentum toward the use of such
                      techniques as an extension of capability on current neutron
                      instrumentation and for the planing of the many new
                      instruments that will be designed in the near future, e.g.,
                      the future ESS source in Sweden},
      organization  = {QENS/WINS 2012, Nikko (Japan)},
      cin          = {JCNS-2 / JCNS (München) ; Jülich Centre for Neutron
                      Science JCNS (München) ; JCNS-FRM-II / PGI-4 / JARA-FIT},
      ddc          = {530},
      cid          = {I:(DE-Juel1)JCNS-2-20110106 /
                      I:(DE-Juel1)JCNS-FRM-II-20110218 /
                      I:(DE-Juel1)PGI-4-20110106 / $I:(DE-82)080009_20140620$},
      pnm          = {422 - Spin-based and quantum information (POF2-422) / 424 -
                      Exploratory materials and phenomena (POF2-424) / 542 -
                      Neutrons (POF2-542) / 544 - In-house Research with PNI
                      (POF2-544) / 54G - JCNS (POF2-54G24)},
      pid          = {G:(DE-HGF)POF2-422 / G:(DE-HGF)POF2-424 /
                      G:(DE-HGF)POF2-542 / G:(DE-HGF)POF2-544 /
                      G:(DE-HGF)POF2-54G24},
      experiment   = {EXP:(DE-MLZ)NOSPEC-20140101},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000341649900030},
      doi          = {10.7566/JPSJS.82SA.SA030},
      url          = {https://juser.fz-juelich.de/record/150947},
}