# Improved Measurement of the Reactor Antineutrino Flux at Daya Bay

title={Improved Measurement of the Reactor Antineutrino Flux at Daya Bay},
author={D. Adey and F. An and A. Balantekin and H. Band and M. Bishai and S. Blyth and D. Cao and G. Cao and J. Cao and Y. Chan and J. Chang and Y. Chang and H. Chen and S. Chen and Y. Chen and J. Cheng and Z. Cheng and J. Cherwinka and M. Chu and A. Chukanov and J. Cummings and F. Deng and Y. Ding and M. Diwan and M. Dolgareva and J. Dove and D. Dwyer and W. Edwards and M. Gonchar and G. Gong and H. Gong and W. Gu and L. Guo and X. Guo and Y. H. Guo and Z. Guo and R. Hackenburg and S. Hans and M. He and K. Heeger and Y. Heng and A. Higuera and Y. Hsiung and B. Hu and T. Hu and Z. Hu and H. Huang and X. Huang and Y. Huang and P. Huber and W. Huo and G. Hussain and D. Jaffe and K. Jen and X. Ji and R. Johnson and D. Jones and L. Kang and S. Kettell and L. Koerner and S. Kohn and M. Kramer and T. Langford and L. Lebanowski and J. Lee and R. Lei and R. Leitner and J. Leung and C. Li and F. Li and H. Li and Q. J. Li and S. Li and S. J. Li and W. D. Li and X. Li and Y. Li and Z. Li and H. Liang and C. J. Lin and G. Lin and S. Lin and Y-c Lin and J. Ling and J. Link and L. Littenberg and B. Littlejohn and J. Liu and Y. Liu and Chang Wei Loh and C. Lu and H. Lu and J. Lu and K. Luk and X. Ma and Y. Ma and Y. Malyshkin and C. Marshall and D. M. Caicedo and K. McDonald and R. McKeown and I. Mitchell and L. Lepin and J. Napolitano and D. Naumov and E. Naumova and J. P. Ochoa-Ricoux and A. Olshevskiy and H. Pan and J. Park and S. Patton and V. Pě{\vc} and J. C. Peng and L. Pinsky and C. Pun and F. Qi and M. Qi and X. Qian and R. Qiu and N. Raper and J. Ren and R. Rosero and B. Roskovec and X. Ruan and H. Steiner and J. L. Sun and K. Treskov and W.-H. Tse and C. Tull and B. Viren and V. Vorobel and C. Wang and J. Wang and M. Wang and N. Y. Wang and R. G. Wang and W. Wang and X. Wang and Y. F. Wang and Z. Wang and H. Wei and L. Wei and L. Wen and K. Whisnant and C. White and T. Wise and H. Wong and S. Wong and E. orcester and Q. Wu and W. J. Wu and D. Xia and Z. Xing and J. Xu and T. Xue and C. Yang and H. Yang and L. Yang and M. S. Yang and M. T. Yang and Y. Yang and M. Ye and M. Yeh and B. Young and H. Z. Yu and Z. Y. Yu and B. Yue and S. Zeng and L. Zhan and C. Zhang and F. Y. Zhang and H. H. Zhang and J. Zhang and Q. Zhang and R. Zhang and X. Zhang and X. T. Zhang and Y. Zhang and Z. Zhang and J. Zhao and P. Zheng and L. Zhou and H. Zhuang and J. Zou},
journal={arXiv: High Energy Physics - Experiment},
year={2018}
}
• D. Adey, +196 authors J. Zou
• Published 2018
• Physics
• arXiv: High Energy Physics - Experiment
This work reports a precise measurement of the reactor antineutrino flux using 2.2 million inverse beta decay (IBD) events collected with the Daya Bay near detectors in 1230 days. The dominant uncertainty on the neutron detection efficiency is reduced by 56% with respect to the previous measurement through a comprehensive neutron calibration and detailed data and simulation analysis. The new average IBD yield is determined to be $(5.91\pm0.09)\times10^{-43}~\rm{cm}^2/\rm{fission}$ with total… Expand

#### Figures and Tables from this paper

Reactor antineutrino flux and spectrum measurement of Daya Bay Experiment
The Daya Bay Reactor Neutrino Experiment utilizes eight functionally identical detectors with large target volume to measure the antineutrino flux emitted from three pairs of powerful nuclearExpand
TAO Conceptual Design Report: A Precision Measurement of the Reactor Antineutrino Spectrum with Sub-percent Energy Resolution
The Taishan Antineutrino Observatory (TAO, also known as JUNO-TAO) is a satellite experiment of the Jiangmen Underground Neutrino Observatory (JUNO). A ton-level liquid scintillator detector will beExpand
A Decade of Discoveries by the Daya Bay Reactor Neutrino Experiment
The Daya Bay reactor antineutrino experiment ended data-taking operations on 12 December 2020, over nine years from the start of data-taking in September 2011. Over this period, Daya Bay accumulatedExpand
Latest Results from Neutrino Oscillation Experiment Daya Bay
The Daya Bay Reactor Neutrino Experiment was designed to measure θ13, the smallest mixing angle in the three-neutrino mixing framework, with unprecedented precision. The experiment consists of eightExpand
Improved STEREO simulation with a new gamma ray spectrum of excited gadolinium isotopes using FIFRELIN
Abstract.The STEREO experiment measures the electron antineutrino spectrum emitted in a research reactor using the inverse beta decay reaction on H nuclei in a gadolinium loaded liquid scintillator.Expand
Geoneutrinos in Large Direct Detection Experiments
• Physics
• 2018
Geoneutrinos can provide a unique insight into Earth's interior, its central engine and its formation history. We study the detection of geoneutrinos in large direct detection experiments, which hasExpand
Observing the Potassium Geoneutrinos with Liquid Scintillator Cherenkov Neutrino Detectors
• Physics
• 2017
In this article, we present the concept of using liquid scintillator Cherenkov neutrino detectors to detect geoneutrinos, especially the potassium-40 ($^\text{40}$K) component. Geoneutrinos can beExpand
A high precision calibration of the nonlinear energy response at Daya Bay
A high precision calibration of the nonlinearity in the energy response of the Daya Bay Reactor Neutrino Experiment’s antineutrino detectors is presented in detail. The energy nonlinearity originatesExpand
Natural gadolinium is widely used for its excellent thermal neutron capture cross section, because of its two major isotopes: $^{\rm 155}$Gd and $^{\rm 157}$Gd. We measured the $\gamma$-ray spectraExpand
Hunting potassium geoneutrinos with liquid scintillator Cherenkov neutrino detectors
• Physics
• 2017
In this article we present an idea of using liquid scintillator Cherenkov neutrino detectors to detect the mantle and K-40 components of geoneutrinos. Liquid scintillator Cherenkov detectors featureExpand

#### References

SHOWING 1-10 OF 63 REFERENCES
Improved Measurement of the Reactor Antineutrino Flux and Spectrum at Daya Bay
A new measurement of the reactor antineutrino flux and energy spectrum by the Daya Bay reactor neutrino experiment is reported. The antineutrinos were generated by six 2.9~GW$_{\mathrm{th}}$ nuclearExpand
Evolution of the Reactor Antineutrino Flux and Spectrum at Daya Bay.
• F. An, +202 authors J. Zou
• Medicine, Physics
• Physical review letters
• 2017
While measurements of the evolution in the IBD spectrum show general agreement with predictions from recent reactor models, the measured evolution in total IBD yield disagrees with recent predictions at 3.1σ, indicating that an overall deficit in the measured flux with respect to predictions does not result from equal fractional deficits from the primary fission isotopes. Expand
The Detector System of The Daya Bay Reactor Antineutrino Experiment
The Daya Bay experiment was the first to report simultaneous measurements of reactor antineutrinos at multiple baselines leading to the discovery of $\bar{\nu}_e$ oscillations over km-baselines.Expand
Measurement of the Reactor Antineutrino Flux and Spectrum at Daya Bay.
• F. An, +221 authors J. Zou
• Physics, Medicine
• Physical review letters
• 2016
A measurement of the flux and energy spectrum of electron antineutrinos from six 2.9 GWth nuclear reactors with six detectors deployed in two near and far underground experimental halls in the Daya Bay experiment finds the measured IBD positron energy spectrum deviates from both spectral predictions by more than 2σ over the full energy range. Expand
Determination of antineutrino spectra from nuclear reactors
In this paper we study the effect of well-known higher-order corrections to the allowed $\ensuremath{\beta}$-decay spectrum on the determination of antineutrino spectra resulting from the decays ofExpand
Improved Predictions of Reactor Antineutrino Spectra
Precise predictions of the antineutrino spectra emitted by nuclear reactors is a key ingredient in measurements of reactor neutrino oscillations as well as in recent applications to the surveillanceExpand
Prospects for improved understanding of isotopic reactor antineutrino fluxes
• Physics
• 2018
Predictions of antineutrino fluxes produced by fission isotopes in a nuclear reactor have recently received increased scrutiny due to observed differences in predicted and measured inverse beta decayExpand
New measurement of θ13 via neutron capture on hydrogen at Daya Bay
This article reports an improved independent measurement of neutrino mixing angle θ_(13) at the Daya Bay Reactor Neutrino Experiment. Electron antineutrinos were identified by inverse β-decays withExpand
Measurement of electron antineutrino oscillation based on 1230 days of operation of the Daya Bay experiment
A measurement of electron antineutrino oscillation by the Daya Bay Reactor Neutrino Experiment is described in detail. Six 2.9-GWth nuclear power reactors of the Daya Bay and Ling Ao nuclear powerExpand
Observation of electron-antineutrino disappearance at Daya Bay.
• F. An, +264 authors J. Zou
• Physics, Medicine
• Physical review letters
• 2012
The Daya Bay Reactor Neutrino Experiment has measured a nonzero value for the neutrino mixing angle θ(13) with a significance of 5.2 standard deviations. Antineutrinos from six 2.9 GWth reactors wereExpand