A high precision calibration of the nonlinear energy response at Daya Bay

Adey, D.; An, Fengpeng; Balantekin, A. B.; Band, H. R.; Bishai, M.; Blyth, S.; Cao, D.; Cao, G. F.; Cao, Jun; Chang, J. F.; Chang, Yun Hsuan; Chen, H.S.; Chen, S.M.; Chen, Y.; Chen, Y.X.; Cheng, Jie; Cheng, Z. K.; Cherwinka, J. J.; Chu, M. C.; Chukanov, A.; Cummings, J. P.; Dash, N.; Deng, F. S.; Ding, Yayun; Diwan, M. V.; Dohnal, Tadeáš; Dove, J.; Dvořák, Martin; Dwyer, D. A.; Gonchar, M.; Gong, Guanghua; Gong, H.; Gu, W.; Guo, Jingyuan; Guo, L.; Guo, Xin-Heng; Guo, Yuhang; Guo, Ziyi; Hackenburg, R.; Hans, S.; He, M.; Heeger, K. M.; Heng, Y. K.; Higuera, A.; Hor, YuenKeung; Hsiung, Y.; Hu, Bei-Zhen; Hu, Jun; Hu, T.; Hu, Z. J.; Huang, Hanxiong; Huang, X. T.; Huang, Yongbo; Huber, Patrick; Jaffe, D. E.; Jen, K. L.; Jetter, S.; Ji, X. L.; Ji, Xingzhao; Johnson, R. A.; Jones, D.; Li, Kang; Kettell, S. H.; Koerner, L. W.; Kohn, S.; Krämer, M.; Langford, T.; Lebanowski, L.; Lee, J.; Lee, J.H.C.; Lei, Ruiting; Leitner, R.; Leung, J. K. C.; Li, C.; Li, F.; Li, H.L.; Li, Q.J.; Li, Sai; Li, S.C.; Li, S.J.; Li, W.D.; Li, X.N.; Li, X.Q.; Li, Y.F.; Li, Z.B.; Liang, H.; Lin, C. J.; Lin, G. L.; Lin, Shengxin; Lin, S.; Ling, Jiajie; Link, J. M.; Littenberg, L.; Littlejohn, B. R.; Liu, J.C.; Liu, J.L.; Liu, Y.; Liu, Y.H.; Lu, C.; Lu, Haoqi; Lu, J. S.; Luk, K. B.; Ma, Xubo; Ma, Xiaoyan; Ma, Y.; Marshall, C.; Caicedo, D. A. Martínez; McDonald, Kirk T.; McKeown, R. D.; Mitchell, I.V.; Lepin, L. Mora; Napolitano, J.; Naumov, D.; Наумова, Э.; Ochoa-Ricoux, J. P.; Olshevskiy, A.; Pan, Hsiao-Ru; Park, J.; Patton, S.; Pec, V.; Peng, J. C.; Pinsky, L.; Pun, C. S. J.; Qi, F. Z.; Qi, M.; Qian, X.; Raper, N.; Ren, Jie; Rosero, R.; Roskovec, B.; Ruan, X. C.; Steiner, H.; Sun, Jian; Treskov, Konstantin; Tse, W.-H.; Tull, C. E.; Viren, B.; Vorobel, V.; Wang, C.H.; Wang, J.; Wang, M.; Wang, Naizhou; Wang, R.G.; Wang, W.; Wang, X.; Wang, Y.; Wang, Y.F.; Wang, Z.; Wang, Z.M.; Wei, H.; Wei, Lianghong; Wen, L.; Whisnant, K.; White, C.; Wong, H. L. H.; Wong, Steven Chan-Fai; Worcester, E.; Wu, Qun; Wu, W.; Xia, Dongmei; Xing, Zhi-zhong; Xu, Jing; Xue, T.; Yang, Chaowen; Yang, Lei; Yang, M. S.; Yang, Yifan; Ye, M.; Yeh, M.; Young, Ben; Yu, Hongzhao; Yu, Zezhong; Yue, Baobiao; Zeng, S.; Zeng, Yuda; Zhan, Liang; Zhang, C.; Zhang, C.C.; Zhang, F.Y.; Zhang, H.H.; Zhang, J.W.; Zhang, Q.M.; Zhang, R.; Zhang, X.F.; Zhang, X.T.; Zhang, Y.M.; Zhang, Y.X.; Zhang, Y.Y.; Zhang, Z.J.; Zhang, Z.P.; Zhang, Z.Y.; Zhao, J.; Li, Zhou; Zhuang, H. L.; Zou, J. H.

doi:10.1016/j.nima.2019.06.031

Cited by 36 publications

(55 citation statements)

References 30 publications

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“…The expression of the weak magnetism correction is varied between the original approximate formula in [62] and a more recent calculation [63]. In a recent publication of Daya Bay [64], it is argued that radiative corrections should not be applied to the simulated 12 B spectrum because the virtual loop corrections do not change the detected kinematics and the energy taken by the emitted real photons is actually deposited in the liquid scintillator. In the case of the smaller STEREO detector, real photons could escape the active volume and their 1=E probability density also induces some quenching.…”

Section: E Information From Continuous Energy Spectramentioning

confidence: 99%

Improved sterile neutrino constraints from the STEREO experiment with 179 days of reactor-on data

Almazán¹,

Bernard²,

Blanchet³

et al. 2020

Phys. Rev. D

119

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The STEREO experiment is a very short baseline reactor antineutrino experiment. It is designed to test the hypothesis of light sterile neutrinos being the cause of a deficit of the observed antineutrino interaction rate at short baselines with respect to the predicted rate, known as the reactor antineutrino anomaly. The STEREO experiment measures the antineutrino energy spectrum in six identical detector cells covering baselines between 9 and 11 m from the compact core of the ILL research reactor. In this article, results from 179 days of reactor turned on and 235 days of reactor turned off are reported at a high degree of detail. The current results include improvements in the modelling of detector optical properties and the γ-cascade after neutron captures by gadolinium, the treatment of backgrounds, and the statistical method of the oscillation analysis. Using a direct comparison between antineutrino spectra of all cells, largely independent of any flux prediction, we find the data compatible with the null oscillation hypothesis. The best-fit point of the reactor antineutrino anomaly is rejected at more than 99.9% C.L.

show abstract

Section: E Information From Continuous Energy Spectramentioning

confidence: 99%

Improved sterile neutrino constraints from the STEREO experiment with 179 days of reactor-on data

Almazán¹,

Bernard²,

Blanchet³

et al. 2020

Phys. Rev. D

119

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show abstract

“…The predicted prompt energy spectrum is determined from theν e spectrum taking into account the effects of IBD kinematics, energy leakage, and energy resolution. A model of the nonlinear energy response is used to correct the measured prompt energy spectrum of the IBD candidates [41] to facilitate the comparison of spectra between different experiments [42]. The magnitude of the nonlinear correction is ∼10% at maximum with a 0.5% uncertainty at 3 MeV [41], improved from 1% previously [12].…”

mentioning

confidence: 99%

Extraction of the U235 and Pu239
Adey¹,
An²,
Balantekin³
et al. 2019
Phys. Rev. Lett.
Self Cite
65
6
110
0
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This Letter reports the first extraction of individual antineutrino spectra from 235 U and 239 Pu fission and an improved measurement of the prompt energy spectrum of reactor antineutrinos at Daya Bay. The analysis uses 3.5 × 10 6 inverse beta-decay candidates in four near antineutrino detectors in 1958 days. The individual antineutrino spectra of the two dominant isotopes, 235 U and 239 Pu, are extracted using the evolution of the prompt spectrum as a function of the isotope fission fractions. In the energy window of 4-6 MeV, a 7% (9%) excess of events is observed for the 235 U (239 Pu) spectrum compared with the normalized Huber-Mueller model prediction. The significance of discrepancy is 4.0σ for 235 U spectral shape compared with the Huber-Mueller model prediction. The shape of the measured inverse beta-decay prompt energy spectrum disagrees with the prediction of the Huber-Mueller model at 5.3σ. In the energy range of 4-6 MeV, a maximal local discrepancy of 6.3σ is observed.

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“…From the initial concentration to the 6 th step in Table 1, this electronics nonlinearity was carefully measured and corrected with the help of a full Flash ADC readout system following the method reported in Ref. [25]. From the 7 th to 12 th steps, the Flash ADC readout system was not working well.…”

Section: The Light Yield Measurementsmentioning

confidence: 99%

Optimization of the JUNO liquid scintillator composition using a Daya Bay antineutrino detector

Abusleme

Adam

Ahmad

et al. 2021

Nuclear Instruments and Methods in Physics Research Section A:

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This is a PDF file of an article that has undergone enhancements after acceptance, such as the addition of a cover page and metadata, and formatting for readability, but it is not yet the definitive version of record. This version will undergo additional copyediting, typesetting and review before it is published in its final form, but we are providing this version to give early visibility of the article. Please note that, during the production process, errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain.

show abstract

A high precision calibration of the nonlinear energy response at Daya Bay

Cited by 36 publications

References 30 publications

Improved sterile neutrino constraints from the STEREO experiment with 179 days of reactor-on data

Improved sterile neutrino constraints from the STEREO experiment with 179 days of reactor-on data

Extraction of the U235 and Pu239
Adey¹,
An²,
Balantekin³
et al. 2019
Phys. Rev. Lett.
Self Cite
65
6
110
0
View full text Add to dashboard Cite

Optimization of the JUNO liquid scintillator composition using a Daya Bay antineutrino detector

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A high precision calibration of the nonlinear energy response at Daya Bay

Cited by 36 publications

References 30 publications

Improved sterile neutrino constraints from the STEREO experiment with 179 days of reactor-on data

Improved sterile neutrino constraints from the STEREO experiment with 179 days of reactor-on data

Extraction of the U235 and Pu239Adey1, An2, Balantekin3 et al. 2019Phys. Rev. Lett.Self Cite6561100View full textAdd to dashboardCite

Optimization of the JUNO liquid scintillator composition using a Daya Bay antineutrino detector

Contact Info

Product

Resources

About

Extraction of the U235 and Pu239
Adey¹,
An²,
Balantekin³
et al. 2019
Phys. Rev. Lett.
Self Cite
65
6
110
0
View full text Add to dashboard Cite