High energy reactor neutrinos

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Authors
Raper, Neill
Issue Date
2016-05
Type
Electronic thesis
Thesis
Language
ENG
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Physics
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Abstract
We present the first measurement of a nonzero reactor neutrino flux with energies above 8 MeV. Measurements are taken with the Daya Bay Reactor Neutrino Experiments detectors, using the Guangdong Nuclear Power Station as a source. Disagreement between data and theory regarding rate and shape of reactor neutrino spectra have made the need for direct measurement clear. Data are especially useful at high energies, where far fewer isotopes contribute. Neutrino candidates are correlated to reactor power and reactor power is extrapolated to zero in order to separate neutrino events from background. We find evidence of reactor neutrinos up to ~12.5 MeV at 1.92 σ above 0 and include a survey of isotopes likely to be contributing neutrinos in this energy range.
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May 2016
School of Science
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Rensselaer Polytechnic Institute, Troy, NY
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