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@INPROCEEDINGS{Shabani:1017360,
      author       = {Shabani, Doruntin and Rücker, Ulrich and Li, Jingjing and
                      Zakalek, Paul and Schmidt, Norberto and Langer, Christoph
                      and Gutberlet, Thomas and Brückel, Thomas},
      title        = {{I}nvestigation of the mutual influence of multiple
                      extraction channels for accelerator-based neutron sources},
      reportid     = {FZJ-2023-04070},
      year         = {2023},
      abstract     = {Compact accelerator-based neutron sources (CANS) are an
                      emerging technology that enables scientists to analyze the
                      dynamics and structure of matter. One of these projects is
                      the High Brilliance neutron Source (HBS) project, which aims
                      to tailor the neutron beams to meet requirements for
                      different instruments [1]. A key component in the
                      optimization process is the development of the
                      target-moderator-reflector (TMR) system, where the moderator
                      plays an important role in accumulation, moderating, and
                      emitting neutrons towards several instruments through
                      extraction channels. This study investigates the mutual
                      influences of several extraction channels on the neutron
                      flux and the beam divergence compared to a one extraction
                      channel system.To understand the production, moderation and
                      propagation of neutrons Monte Carlo particle-tracking codes,
                      such as MCNP and PHITS can be used. Simulations using the
                      PHITS program have first been performed for a single
                      extraction channel system to observe moderator design
                      effects on the beam divergence and the peak neutron flux
                      emitted towards the instrument. Lastly, several arrangements
                      of multiple extraction channels have been simulated to
                      investigate the influence of additional extraction channels
                      on the flux and the beam divergence.The results achieved in
                      this study show that the influence of multiple extraction
                      channels on the thermal neutron flux is minimal depending on
                      the amount of moderator material that is used and on the
                      arrangement of the channels. The insights gained from this
                      work contribute to the continuous development of the HBS
                      project and provide helpful information for the optimization
                      of such a neutron source and design of neutron extraction
                      channels in forthcoming neutron source facilities.[1] T.
                      Brückel, T. Gutberlet (Eds.), Conceptual Design Report –
                      Jülich High Brilliance Neutron Source (HBS), (2020)},
      month         = {Oct},
      date          = {2023-10-16},
      organization  = {10th Annual Meeting of the Union for
                       Compact Accelerator-driven Neutron
                       Sources, Budapest (Hungary), 16 Oct
                       2023 - 19 Oct 2023},
      subtyp        = {Invited},
      cin          = {JCNS-2 / PGI-4 / JCNS-HBS / JARA-FIT},
      cid          = {I:(DE-Juel1)JCNS-2-20110106 / I:(DE-Juel1)PGI-4-20110106 /
                      I:(DE-Juel1)JCNS-HBS-20180709 / $I:(DE-82)080009_20140620$},
      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)24},
      url          = {https://juser.fz-juelich.de/record/1017360},
}