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@INPROCEEDINGS{Schrader:188515,
      author       = {Schrader, Tobias Erich and Ostermann, Andreas and
                      Monkenbusch, Michael and Laatsch, Bernhard and Jüttner,
                      Philipp and Petry, Winfried and Richter, Dieter},
      title        = {{B}io{D}iff - a neutron diffractometer optimized for
                      crystals with large unit cell dimensions},
      reportid     = {FZJ-2015-01874},
      year         = {2014},
      abstract     = {The research reactor Heinz Maier-Leibnitz (FRM II) is a
                      modern high flux neutron source which feeds some 30 state of
                      the art neutron beam instruments. Currently 24 are
                      operational, others in commissioning or under construction.
                      The newly built neutron single crystal diffractometer
                      BIODIFF is especially designed to collect data from crystals
                      with large unit cells. The main field of application is the
                      structural analysis of proteins, especially the
                      determination of hydrogen atom positions. BIODIFF is a joint
                      project of the Jülich Centre for Neutron Science (JCNS) and
                      the FRM II. Typical scientific questions addressed are the
                      determination of protonation states of amino acid side
                      chains (see e. g. [1,2]) and the characterization of the
                      hydrogen bonding network between the protein active centre
                      and an inhibitor or substrate. BIODIFF is designed as a
                      monochromatic instrument. By using a highly orientated
                      pyrolytic graphite monochromator (PG002) the diffractometer
                      is able to operate in the wavelength range of 2.4 Å to
                      about 5.6 Å. Contaminations of higher order wavelengths are
                      removed by a neutron velocity selector. To cover a large
                      solid angle the main detector of BIODIFF consists of a
                      neutron imaging plate in a cylindrical geometry with online
                      read-out capability. A fast Li/ZnS scintillator CCD camera
                      is available for additional detection abilities. An optical
                      CCD-camera pointing at the sample position is used to
                      quickly align the crystal with respect to the neutron beam.
                      The main advantage of BIODIFF is the possibility to adapt
                      the wavelength to the size of the unit cell of the sample
                      crystal while operating with a clean monochromatic beam that
                      keeps the background level low. BIODIFF is equipped with a
                      standard Oxford Cryosystem “Cryostream 700+” which
                      allows measurements in the temperature regime from 90K up to
                      500K (see Figure underneath).},
      month         = {Aug},
      date          = {2014-08-05},
      organization  = {23rd Congress and General Assembly of
                       the International Union of
                       Crystallography, Montreal (Canada), 5
                       Aug 2014 - 12 Aug 2014},
      cin          = {JCNS (München) ; Jülich Centre for Neutron Science JCNS
                      (München) ; JCNS-FRM-II / Neutronenstreuung ; JCNS-1 /
                      ZEA-1},
      cid          = {I:(DE-Juel1)JCNS-FRM-II-20110218 /
                      I:(DE-Juel1)JCNS-1-20110106 / I:(DE-Juel1)ZEA-1-20090406},
      pnm          = {451 - Soft Matter Composites (POF2-451) / 54G - JCNS
                      (POF2-54G24)},
      pid          = {G:(DE-HGF)POF2-451 / G:(DE-HGF)POF2-54G24},
      experiment   = {EXP:(DE-MLZ)BIODIFF-20140101},
      typ          = {PUB:(DE-HGF)24},
      url          = {https://juser.fz-juelich.de/record/188515},
}