Helium and Lead Observatory

The Helium And Lead Observatory (HALO) is a neutrino detector at SNOLab for the Supernova Early Warning System. It began engineering operation on May 8, 2012, and joined as an operational part of SNEWS in October 2015. It was designed to be a low-cost, low-maintenance detector with limited capabilities sufficient for the burst of neutrinos generated by a nearby supernova. Its major components are left over from other decommissioned experiments: 76 tons of lead from an earlier cosmic-ray experiment, and 128 three-metre-long helium-3 neutron detectors from the Sudbury Neutrino Observatory.

Helium and Lead Observatory

The Helium And Lead Observatory (HALO) is a neutrino detector at SNOLab for the Supernova Early Warning System. It began engineering operation on May 8, 2012, and joined as an operational part of SNEWS in October 2015. It was designed to be a low-cost, low-maintenance detector with limited capabilities sufficient for the burst of neutrinos generated by a nearby supernova. Its major components are left over from other decommissioned experiments: 76 tons of lead from an earlier cosmic-ray experiment, and 128 three-metre-long helium-3 neutron detectors from the Sudbury Neutrino Observatory.