Precise Measurement of Reactor Antineutrino Spectra from Joint Analyses of PROSPECT, STEREO, and Daya Bay
ORAL
Abstract
The PROSPECT, Daya Bay, and STEREO reactor antineutrino experiments have made world-leading measurements of the $^{235}$U antineutrino spectra from fission reactors using high-performance liquid scintillator detectors.
PROSPECT and STEREO have made modern measurements of antineutrinos at highly enriched uranium (HEU) research reactors where over 99\% of the antineutrino flux comes from $^{235}$U, while the Daya Bay experiment has studied antineutrino emission at commercial power reactors which use a mixture of fissile isotopes.
Recently PROSPECT has performed joint analyses with Daya Bay and STEREO yielding the most precise determination of the measured $^{235}$U reactor antineutrino spectrum.
The work with STEREO directly combines the two pure $^{235}$U measurements and jointly unfolds the spectra to provide and improved result in antineutrino energy, independent of assumptions regarding other isotopes' contributions.
PROSPECT's combination with the high-statistics measurement from Daya Bay improves the deconvolution of the power reactor spectrum to obtain a more precise unfolded $^{235}$U antineutrino spectrum.
In this talk, I will present the results of both analyses.
PROSPECT and STEREO have made modern measurements of antineutrinos at highly enriched uranium (HEU) research reactors where over 99\% of the antineutrino flux comes from $^{235}$U, while the Daya Bay experiment has studied antineutrino emission at commercial power reactors which use a mixture of fissile isotopes.
Recently PROSPECT has performed joint analyses with Daya Bay and STEREO yielding the most precise determination of the measured $^{235}$U reactor antineutrino spectrum.
The work with STEREO directly combines the two pure $^{235}$U measurements and jointly unfolds the spectra to provide and improved result in antineutrino energy, independent of assumptions regarding other isotopes' contributions.
PROSPECT's combination with the high-statistics measurement from Daya Bay improves the deconvolution of the power reactor spectrum to obtain a more precise unfolded $^{235}$U antineutrino spectrum.
In this talk, I will present the results of both analyses.
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Publication: @article{Prospect:2021lbs,
author = "Almaz\'an, H. and others",
collaboration = "Prospect, Stereo",
title = "{Joint Measurement of the $^{235}$U Antineutrino Spectrum by Prospect and Stereo}",
eprint = "2107.03371",
archivePrefix = "arXiv",
primaryClass = "nucl-ex",
month = "7",
year = "2021"
}
Presenters
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Benjamin T Foust
Yale University
Authors
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Benjamin T Foust
Yale University