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Neutron tagging following atmospheric neutrino events in a water Cherenkov detector
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(2022) Neutron tagging following atmospheric neutrino events in a water Cherenkov detector. Journal of Instrumentation, 17 (10). P10029. doi:10.1088/1748-0221/17/10/P10029 ISSN 1748-0221.
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Official URL: http://dx.doi.org/10.1088/1748-0221/17/10/P10029
Abstract
We present the development of neutron-tagging techniques in Super-Kamiokande IV using a neural network analysis. The detection efficiency of neutron capture on hydrogen is estimated to be 26%, with a mis-tag rate of 0.016 per neutrino event. The uncertainty of the tagging efficiency is estimated to be 9.0%. Measurement of the tagging efficiency with data from an Americium-Beryllium calibration agrees with this value within 10%. The tagging procedure was performed on 3,244.4 days of SK-IV atmospheric neutrino data, identifying 18,091 neutrons in 26,473 neutrino events. The fitted neutron capture lifetime was measured as 218±9 μs.
| Item Type: | Journal Article | ||||||||||||||||||||||||||||||||||||||||||
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| Subjects: | Q Science > QC Physics | ||||||||||||||||||||||||||||||||||||||||||
| Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | ||||||||||||||||||||||||||||||||||||||||||
| Library of Congress Subject Headings (LCSH): | Particles (Nuclear physics) , Cherenkov counters , Nuclear counters, Neutrinos | ||||||||||||||||||||||||||||||||||||||||||
| Journal or Publication Title: | Journal of Instrumentation | ||||||||||||||||||||||||||||||||||||||||||
| Publisher: | IOP Publishing Ltd | ||||||||||||||||||||||||||||||||||||||||||
| ISSN: | 1748-0221 | ||||||||||||||||||||||||||||||||||||||||||
| Official Date: | 18 October 2022 | ||||||||||||||||||||||||||||||||||||||||||
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| Volume: | 17 | ||||||||||||||||||||||||||||||||||||||||||
| Number: | 10 | ||||||||||||||||||||||||||||||||||||||||||
| Number of Pages: | 40 | ||||||||||||||||||||||||||||||||||||||||||
| Article Number: | P10029 | ||||||||||||||||||||||||||||||||||||||||||
| DOI: | 10.1088/1748-0221/17/10/P10029 | ||||||||||||||||||||||||||||||||||||||||||
| Status: | Peer Reviewed | ||||||||||||||||||||||||||||||||||||||||||
| Publication Status: | Published | ||||||||||||||||||||||||||||||||||||||||||
| Access rights to Published version: | Open Access (Creative Commons) | ||||||||||||||||||||||||||||||||||||||||||
| Date of first compliant deposit: | 8 November 2022 | ||||||||||||||||||||||||||||||||||||||||||
| Date of first compliant Open Access: | 9 November 2022 | ||||||||||||||||||||||||||||||||||||||||||
| RIOXX Funder/Project Grant: |
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