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@INPROCEEDINGS{LIU:246047,
      author       = {LIU, RUNXUAN},
      title        = {{JUNO} {OSIRIS} {ONLINE} {TRIGGER}},
      publisher    = {Zenodo},
      reportid     = {GSI-2022-00309},
      pages        = {5045635},
      year         = {2021},
      abstract     = {JUNO is a 20 kt liquid scintillator detector under
                      construction in Jiangmen, China, whose goal is to determine
                      the neutrino mass hierarchy. Decay of radioactive isotopes
                      in the liquid scintillator can mimic neutrino signal events.
                      In order to meet the stringent requirements on the
                      radiopurity of the liquid scintillator in JUNO experiment,
                      the OSIRIS pre-detector is being designed to monitor the
                      liquid scintillator during the several months of filling the
                      large volume of JUNO. OSIRIS will contain 20 ton of
                      scintillator and will be equipped with 76 20-inch PMTs. The
                      data acquisition system will have no global hardware
                      trigger: instead, each PMT will provide a data-stream
                      composed of the digitized PMT pulses, each containing a time
                      stamp. Based on the latter, dedicated software will organize
                      these data streams into events by sorting the time stamps
                      and apply trigger logics. To optimize the trigger
                      conditions, physics events are generated from the
                      Geant4-based OSIRIS simulation software. Then the output of
                      photon hits on all PMTs are transferred into our DAQ
                      simulation software where dark counts are also simulated.
                      Afterwards, different trigger conditions are applied in the
                      event builder. This talk will discuss the final trigger
                      setup as a function of $^{14}$C beta-decay event rate and
                      dark rates of PMTs. Our goal is to achieve the optimal
                      trade-off of maintaining a low dark noise event rate with a
                      high trigger efficiency to detect $^{14}$C events.},
      month         = {Feb},
      date          = {2021-02-18},
      organization  = {XIX International Workshop on Neutrino
                       Telescopes, Online (Padova) (Italy), 18
                       Feb 2021 - 26 Feb 2021},
      keywords     = {Neutrino Telescopes - New Facilities (Other)},
      cin          = {FZJ},
      cid          = {I:(DE-588b)5008462-8},
      pnm          = {899 - ohne Topic (POF4-899)},
      pid          = {G:(DE-HGF)POF4-899},
      experiment   = {EXP:(DE-Ds200)JUNO-2022},
      typ          = {PUB:(DE-HGF)8},
      doi          = {10.5281/ZENODO.5045635},
      url          = {https://repository.gsi.de/record/246047},
}