First study of neutron tagging with a water Cherenkov detector
Abstract
A first study of neutron tagging is conducted in Super-Kamiokande, a 50,000 ton water Cherenkov detector. The tagging efficiencies of thermal neutrons are evaluated in a 0.2% GdCl-water solution and pure water. They are determined to be, respectively, 66.7% for events above 3 MeV and 20% with corresponding background probabilities of 2×10-4 and 3×10-2. This newly developed technique may enable water Cherenkov detectors to identify ν’s from astrophysical sources as well as those produced by commercial reactors via the delayed coincidence scheme.
- Publication:
-
Astroparticle Physics
- Pub Date:
- May 2009
- DOI:
- 10.1016/j.astropartphys.2009.03.002
- arXiv:
- arXiv:0811.0735
- Bibcode:
- 2009APh....31..320S
- Keywords:
-
- 29.40.Ka;
- Cherenkov detectors;
- High Energy Physics - Experiment
- E-Print:
- 17 pages, 11 figures