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@INPROCEEDINGS{Ma:877649,
      author       = {Ma, Zhanwen and Lieutenant, K. and Voigt, J.},
      title        = {{C}onsiderations about guide configuration of the {TOF}
                      diffractometer at high brilliance source},
      reportid     = {FZJ-2020-02362},
      year         = {2020},
      abstract     = {A time of flight diffractometer for the study of the
                      nanoscale and disordered materials samples with a high
                      neutron flux is envisioned for the HBS. To transfer neutrons
                      from moderator to sample over a long-distance effectively,
                      several neutron guide systems, including a truly elliptical
                      guide and ballistic guides with elliptical diverging and
                      focusing sections were studied via Monte-Carlo simulation,
                      varying the moderator to guide distance and the guide entry
                      cross section. The neutron flux, spatial distribution, and
                      divergence distribution and brilliance transfer ratio with
                      different guide shape geometries were calculated and
                      discussed. Simulation results indicate that a well-designed
                      ballistic guide system can achieve a comparable neutron flux
                      $(96.3\%$ of the true elliptical guide system) and
                      brilliance transfer ratio compared to the true elliptical
                      guide.},
      month         = {Jun},
      date          = {2020-06-22},
      organization  = {The Japanese RIKEN Center for Advanced
                       Photonics (RAP) and the Jülich Centre
                       for Neutron Science (JCNS) fourth joint
                       workshop on compact accelerator-driven
                       neutron sources (CANS) special webinar,
                       Forschungszentrum Jülich (Germany), 22
                       Jun 2020 - 24 Jun 2020},
      subtyp        = {Invited},
      cin          = {JCNS-2 / PGI-4 / JARA-FIT / JCNS-HBS},
      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          = {144 - Controlling Collective States (POF3-144) / 524 -
                      Controlling Collective States (POF3-524) / 6212 - Quantum
                      Condensed Matter: Magnetism, Superconductivity (POF3-621) /
                      6213 - Materials and Processes for Energy and Transport
                      Technologies (POF3-621) / 6G4 - Jülich Centre for Neutron
                      Research (JCNS) (POF3-623)},
      pid          = {G:(DE-HGF)POF3-144 / G:(DE-HGF)POF3-524 /
                      G:(DE-HGF)POF3-6212 / G:(DE-HGF)POF3-6213 /
                      G:(DE-HGF)POF3-6G4},
      typ          = {PUB:(DE-HGF)6},
      url          = {https://juser.fz-juelich.de/record/877649},
}