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HALO

Neutrinos

Status

Running

Participation

4 Countries
12 Institutions
46 People

Neutrinos

HALO (the helium and lead observatory) uses lead blocks and helium to detect neutrinos. When a neutrino hits lead, it creates neutrons. These neutrons are then recorded by the helium neutron detectors in HALO, creating a signal in the data.

Did you know?

  • HALO is part of SNEWS (the supernova early-warning system), a group of detectors around the world that alert astronomers to supernovae so they can view them with telescopes.
  • The lead in HALO came from a cosmic ray experiment at Chalk River Laboratory.
  • Most supernova neutrino detectors are only sensitive to one flavour of neutrinos, but HALO is sensitive to all three (elecron, muon, and tau).

Photos of HALO

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Visit the HALO website