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Integration of the Supernova Early Warning System with the NOvA Trigger

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Submitted by:
Alec T Habig
Updated by:
Maury Goodman
Document Created:
01 Apr 2015, 09:43
Contents Revised:
06 Apr 2015, 09:20
Metadata Revised:
08 Jun 2015, 14:37
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The long-baseline NOvA experiment samples Fermilab's upgraded NuMI beam with a Near Detector on-site and a Far Detector (FD) on the surface at Ash River, MN, to observe oscillations of muon neutrinos over 810 km. The 344,064 liquid scintillator-filled cells of the 14 kton FD provide high granularity and a large detector mass and enable the study of non-accelerator based neutrinos using a Data Driven Trigger framework. This poster will focus on the real time integration of the Supernova Early Warning System (SNEWS) with the NOvA Trigger. An XML-RPC based messaging system injects a SNEWS supernova alert directly into Nova's trigger, allowing Nova to save neutrino data from a galactic supernova even if its own SN trigger is too swamped by cosmic ray background noise. This is in parallel to the E-Mail based notification mechanism generally used by SNEWS and allows NOvA more control over trigger propagation and transmission timing. Message propagation time studies are discussed, as well as DAQ upgrades to accommodate larger data buffers and improved data readout.
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Notes and Changes:
minor layout corrections to get ready to send to printer
Referenced by:
  • NOVA-doc-14638: SNEWS trigger status
Associated with Events:
held on 13 Apr 2015
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