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 235U 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 235U, 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 235U reactor antineutrino spectrum.
The work with STEREO directly combines the two pure 235U 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 235U 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 235U, 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 235U reactor antineutrino spectrum.
The work with STEREO directly combines the two pure 235U 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 235U antineutrino spectrum.
In this talk, I will present the results of both analyses.
–
Publication: joint paper with Daya Bay: arXiv:2106.12251, also submitted to PRL;<br>planned paper with STEREO, will also be submitted to PRL
Presenters
-
Benjamin T Foust
Yale University
Authors
-
Benjamin T Foust
Yale University