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@INPROCEEDINGS{Schwab:906988,
      author       = {Schwab, Alexander and Eisenhut, Sebastian and Beßler,
                      Yannick and Baggemann, Johannes and Li, Jingjing and
                      Gutberlet, Thomas and Rücker, Ulrich and Zakalek, Paul and
                      Brückel, Thomas and Natour, Ghaleb},
      title        = {{C}old moderators for the {H}igh {B}rilliance {N}eutron
                      {S}ource},
      reportid     = {FZJ-2022-01800},
      year         = {2022},
      abstract     = {Long-wavelength neutrons for the investigation of
                      nano-scale materials are an indispensable tool in
                      neutronresearch. With the decommissioning of several
                      European nuclear research reactors in recent times
                      compactaccelerator-driven neutron sources (CANS) are of
                      interest in providing scientists with the necessary
                      capacityof neutrons to conduct experiments.At the High
                      Brilliance Neutron Source (HBS) project, multiple cold
                      moderators will be positioned inside thesame
                      Target-Moderator-Reflector unit (TMR), each providing its
                      own instrument with cold or even verycold neutrons. All of
                      these moderators can therefore be optimized in terms of
                      material, operating temperatureand geometry, depending on
                      the requirements of the instrument.In a first approach, two
                      cryogenic moderator systems for a prototype TMR have been
                      designed and arecurrently being manufactured at
                      Forschungszentrum Jülich. While one is a closed-cycle
                      liquid parahydrogensystem, the other one allows the
                      batch-wise production of solid moderators, e. g. frozen
                      methane. Bothmoderators are positioned as close to the
                      target as possible by using so-called moderator plugs (MPs).
                      Theseconsist of a vacuum-insulated cryostat with a
                      detachable fluid transfer and moderator section, a
                      neutronguide and surrounding radiation shielding.The planned
                      operation of these cryogenic moderator prototypes from
                      summer 2022 will enable theexperimental investigation of
                      different cold moderator geometries, as well as various
                      options for thesurrounding thermal moderator and reflector.
                      The obtained results can then be used to validate
                      andcomplement nuclear simulations, proof efficient operation
                      and will allow more reliable future designs ofsuch cold
                      neutron sources.},
      month         = {Mar},
      date          = {2022-03-28},
      organization  = {International Symposium UCANS9, online
                       by RIKEN, Japan (online event), 28 Mar
                       2022 - 31 Mar 2022},
      cin          = {JCNS-2 / PGI-4 / JARA-FIT / JCNS-HBS / ZEA-1},
      cid          = {I:(DE-Juel1)JCNS-2-20110106 / I:(DE-Juel1)PGI-4-20110106 /
                      $I:(DE-82)080009_20140620$ / I:(DE-Juel1)JCNS-HBS-20180709 /
                      I:(DE-Juel1)ZEA-1-20090406},
      pnm          = {632 - Materials – Quantum, Complex and Functional
                      Materials (POF4-632) / 6G4 - Jülich Centre for Neutron
                      Research (JCNS) (FZJ) (POF4-6G4)},
      pid          = {G:(DE-HGF)POF4-632 / G:(DE-HGF)POF4-6G4},
      typ          = {PUB:(DE-HGF)1},
      url          = {https://juser.fz-juelich.de/record/906988},
}