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% GdCl3-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 over(ν, ̄)e's from astrophysical sources as well as those produced by commercial reactors via the delayed coincidence scheme.
Original language | English |
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Pages (from-to) | 320-328 |
Number of pages | 9 |
Journal | Astroparticle Physics |
Volume | 31 |
Issue number | 4 |
DOIs | |
Publication status | Published - 2009 May |
Externally published | Yes |
Keywords
- Gadolinium
- Neutron tagging
- Water Cherenkov detector
ASJC Scopus subject areas
- Astronomy and Astrophysics