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@ARTICLE{Ma:893081,
      author       = {Ma, Z. and Lieutenant, K. and Voigt, J. and Gutberlet, T.
                      and Feygenson, M. and Brückel, T.},
      title        = {{P}erformance of neutron guide systems for low energy
                      accelerator-driven neutron facilities},
      journal      = {Nuclear instruments $\&$ methods in physics research / A},
      volume       = {1009},
      issn         = {0168-9002},
      address      = {Amsterdam},
      publisher    = {North-Holland Publ. Co.},
      reportid     = {FZJ-2021-02549},
      pages        = {165479 -},
      year         = {2021},
      abstract     = {Low Energy accelerator-driven Neutron Facilities have the
                      potential to become competitive to research reactors and
                      spallation sources to generate neutron beams for scattering
                      experiments. A low energy accelerator-driven neutron
                      facility is developed at the Jülich Centre for Neutron
                      Science. This source is expected to provide thermal and cold
                      neutrons with high brilliance and is therefore called
                      “High Brilliance neutron Source” (HBS). In this work, we
                      study the performance of neutron guide systems at HBS by
                      using neutron ray-tracing simulations. Elliptical and
                      ballistic guides with elliptic diverging/converging section
                      have been used in simulations for various moderator-to-guide
                      distances and guide entrance cross-sections. Results show
                      that the beam properties have a strong dependence on the
                      distance between guide entry and moderator. We demonstrate
                      that the ballistic guide system can achieve a comparable
                      neutron flux and brilliance transfer as the true elliptical
                      guide for thermal neutrons if a proper distance between
                      guide entrance and moderator is chosen. For low-divergence
                      cold neutrons, the selected ballistic guide is showing even
                      better performance than the elliptical one},
      cin          = {JCNS-2 / PGI-4 / JARA-FIT / JCNS-HBS},
      ddc          = {530},
      cid          = {I:(DE-Juel1)JCNS-2-20110106 / I:(DE-Juel1)PGI-4-20110106 /
                      $I:(DE-82)080009_20140620$ / I:(DE-Juel1)JCNS-HBS-20180709},
      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)16},
      UT           = {WOS:000663784300002},
      doi          = {10.1016/j.nima.2021.165479},
      url          = {https://juser.fz-juelich.de/record/893081},
}