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@INPROCEEDINGS{Schrader:827763,
      author       = {Schrader, Tobias Erich and Ostermann, Andreas and
                      Monkenbusch, Michael and Laatsch, Bernhard and Jüttner,
                      philip and Petry, Winfried and Richter, Dieter},
      title        = {{B}io{D}iff - a neutron diffractometer optimized for
                      crystals with largeunit cell dimensions},
      reportid     = {FZJ-2017-01869},
      year         = {2016},
      abstract     = {The neutron single crystal diffractometer BIODIFF at the
                      research reactor Heinz Maier-Leibnitz (FRM II) 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 and the
                      characterization of the hydrogen bonding network between the
                      protein active centre and an inhibitor or substrate. BIODIFF
                      (see scheme below) is designed as a monochromatic instrument
                      with a narrow wavelength spread of less than 3 $\%.$ By
                      using a highly orientated pyrolytic graphite monochromator
                      (PG002) the diffractometer is able to change its central
                      wavelength in the range between 2.4 Å and 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.
                      With a radius of 200 mm and a height of 450 mm it covers a
                      solid angle of approximately 2π with a spatial resolution
                      of up to 125 µm. 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 sample 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. BIODFF is equipped with a
                      standard Oxford Cryosystem “Cryostream 700+” which
                      allows measurements in the temperature range from 90 K up to
                      500 K (see picture below). A standard closed cycle cryostat
                      is also available for measurements down to 4 K in vacuum.
                      This may be used for the determination of magnetic unit
                      cells of inorganic crystals in zero magnetic field. Recent
                      applications of BIODIFF also include clay powder diffraction
                      and diffraction from lipid membranes in a controlled
                      humidity environment.},
      month         = {Mar},
      date          = {2016-03-14},
      organization  = {24th Annual Meeting of the German
                       Crystallographic Society, Stuttgart
                       (Germany), 14 Mar 2016 - 17 Mar 2016},
      subtyp        = {Outreach},
      cin          = {JCNS (München) ; Jülich Centre for Neutron Science JCNS
                      (München) ; JCNS-FRM-II / Neutronenstreuung ; JCNS-1 /
                      JCNS-2 / ZEA-1},
      cid          = {I:(DE-Juel1)JCNS-FRM-II-20110218 /
                      I:(DE-Juel1)JCNS-1-20110106 / I:(DE-Juel1)JCNS-2-20110106 /
                      I:(DE-Juel1)ZEA-1-20090406},
      pnm          = {6G15 - FRM II / MLZ (POF3-6G15) / 6G4 - Jülich Centre for
                      Neutron Research (JCNS) (POF3-623) / 6215 - Soft Matter,
                      Health and Life Sciences (POF3-621)},
      pid          = {G:(DE-HGF)POF3-6G15 / G:(DE-HGF)POF3-6G4 /
                      G:(DE-HGF)POF3-6215},
      experiment   = {EXP:(DE-MLZ)BIODIFF-20140101},
      typ          = {PUB:(DE-HGF)24},
      url          = {https://juser.fz-juelich.de/record/827763},
}