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Joint Determination of Reactor Antineutrino Spectra from ²³⁵U and ²³⁹Pu Fission by Daya Bay and PROSPECT

An, F.  P. and Andriamirado, M. and Balantekin, A. B. and Band, H. R. and Bass, C. D. and Bergeron, D. E. and Berish, D. and Bishai, M. and Blyth, S. and Bowden, N. S. and Bryan, C. D. and Cao, G. F. and Cao, J. and Chang, J. F. and Chang, Y. and Chen, H. S. and Chen, S. M. and Chen, Y. and Chen, Y. X. and Cheng, J. and Cheng, Z. K. and Cherwinka, J. J. and Chu, M. C. and Classen, T. and Conant, A. J. and Cummings, J. P. and Dalager, O. and Deichert, G. and Delgado, A. and Deng, F. S. and Ding, Y. Y. and Diwan, M. V. and Dohnal, T. and Dolinski, M. J. and Dolzhikov, D. and Dove, J. and Dvořák, M. and Dwyer, D. A. and Erickson, A. and Foust, B. T. and Gaison, J. K. and Galindo-Uribarri, A. and Gallo, J. P. and Gilbert, C. E. and Gonchar, M. and Gong, G. H. and Gong, H. and Grassi, M. and Gu, W. Q. and Guo, J. Y. and Guo, L. and Guo, X. H. and Guo, Y. H. and Guo, Z. and Hackenburg, R. W. and Hans, S. and Hansell, A. B. and He, M. and Heeger, K. M. and Heffron, B. and Heng, Y. K. and Hor, Y. K. and Hsiung, Y. B. and Hu, B. Z. and Hu, J. R. and Hu, T. and Hu, Z. J. and Huang, H. X. and Huang, J. H. and Huang, X. T. and Huang, Y. B. and Huber, P. and Koblanski, J. and Jaffe, D. E. and Jayakumar, S. and Jen, K. L. and Ji, X. L. and Ji, X. P. and Johnson, R. A. and Jones, D. C. and Kang, L. and Kettell, S. H. and Kohn, S. and Kramer, M. and Kyzylova, O. and Lane, C. E. and Langford, T. J. and LaRosa, J. and Lee, J. and Lee, J. H. C. and Lei, R. T. and Leitner, R. and Leung, J. K. C. and Li, F. and Li, H. L. and Li, J. J. and Li, Q. J. and Li, R. H. and Li, S. and Li, S. C. and Li, W. D. and Li, X. N. and Li, X. Q. and Li, Y. F. and Li, Z. B. and Liang, H. and Lin, C. J. and Lin, G. L. and Lin, S. and Ling, J. J. and Link, J. M. and Littenberg, L. and Littlejohn, B. R. and Liu, J. C. and Liu, J. L. and Liu, J. X. and Lu, C. and Lu, H. Q. and Lu, X. and Luk, K. B. and Ma, B. Z. and Ma, X. B. and Ma, X. Y. and Ma, Y. Q. and Mandujano, R. C. and Maricic, J. and Marshall, C. and McDonald, K. T. and McKeown, R. D. and Mendenhall, M. P. and Meng, Y. and Meyer, A. M. and Milincic, R. and Mueller, P. E. and Mumm, H. P. and Napolitano, J. and Naumov, D. and Naumova, E. and Neilson, R. and Nguyen, T. M. T. and Nikkel, J. A. and Nour, S. and Ochoa-Ricoux, J. P. and Olshevskiy, A. and Palomino, J. L. and Pan, H.-R. and Park, J. and Patton, S. and Peng, J. C. and Pun, C. S. J. and Pushin, D. A. and Qi, F. Z. and Qi, M. and Qian, X. and Raper, N. and Ren, J. and Morales Reveco, C. and Rosero, R. and Roskovec, B. and Ruan, X. C. and Searles, M. and Steiner, H. and Sun, J. L. and Surukuchi, P. T. and Tmej, T. and Treskov, K. and Tse, W.-H. and Tull, C. E. and Tyra, M. A. and Varner, R. L. and Venegas-Vargas, D. and Viren, B. and Vorobel, V. and Wang, C. H. and Wang, J. and Wang, M. and Wang, N. Y. and Wang, R. G. and Wang, W. and Wang, W. and Wang, X. and Wang, Y. and Wang, Y. F. and Wang, Z. and Wang, Z. and Wang, Z. M. and Weatherly, P. B. and Wei, H. Y. and Wei, L. H. and Wen, L. J. and Whisnant, K. and White, C. and Wilhelmi, J. and Wong, H. L. H. and Woolverton, A. and Worcester, E. and Wu, D. R. and Wu, F. L. and Wu, Q. and Wu, W. J. and Xia, D. M. and Xie, Z. Q. and Xing, Z. Z. and Xu, H. K. and Xu, J. L. and Xu, T. and Xue, T. and Yang, C. G. and Yang, L. and Yang, Y. Z. and Yao, H. F. and Ye, M. and Yeh, M. and Young, B. L. and Yu, H. Z. and Yu, Z. Y. and Yue, B. B. and Zavadskyi, V. and Zeng, S. and Zeng, Y. and Zhan, L. and Zhang, C. and Zhang, F. Y. and Zhang, H. H. and Zhang, J. W. and Zhang, Q. M. and Zhang, S. Q. and Zhang, X. and Zhang, X. T. and Zhang, Y. M. and Zhang, Y. X. and Zhang, Y. Y. and Zhang, Z. J. and Zhang, Z. P. and Zhang, Z. Y. and Zhao, J. and Zhao, R. Z. and Zhou, L. and Zhuang, H. L. and Zou, J. H. (2022) Joint Determination of Reactor Antineutrino Spectra from ²³⁵U and ²³⁹Pu Fission by Daya Bay and PROSPECT. Physical Review Letters, 128 (8). Art. No. 081801. ISSN 0031-9007. doi:10.1103/physrevlett.128.081801.

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A joint determination of the reactor antineutrino spectra resulting from the fission of ²³⁵U and ²³⁹Pu has been carried out by the Daya Bay and PROSPECT Collaborations. This Letter reports the level of consistency of ²³⁵U spectrum measurements from the two experiments and presents new results from a joint analysis of both data sets. The measurements are found to be consistent. The combined analysis reduces the degeneracy between the dominant ²³⁵U and ²³⁹Pu isotopes and improves the uncertainty of the ²³⁵U spectral shape to about 3%. The ²³⁵U and ²³⁹Pu antineutrino energy spectra are unfolded from the jointly deconvolved reactor spectra using the Wiener-SVD unfolding method, providing a data-based reference for other reactor antineutrino experiments and other applications. This is the first measurement of the ²³⁵U and ²³⁹Pu spectra based on the combination of experiments at low- and highly enriched uranium reactors.

Item Type:Article
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URLURL TypeDescription Paper
Gaison, J. K.0000-0001-9318-4686
Hu, J. R.0000-0003-2149-9691
Ochoa-Ricoux, J. P.0000-0001-7376-5555
Alternate Title:Joint Determination of Reactor Antineutrino Spectra from 235U and 239Pu Fission by Daya Bay and PROSPECT
Additional Information:© 2022 American Physical Society. Received 24 June 2021; revised 17 August 2021; accepted 26 October 2021; published 22 February 2022. The Daya Bay experiment is supported in part by the Ministry of Science and Technology of China, the U.S. Department of Energy, the Chinese Academy of Sciences, the CAS Center for Excellence in Particle Physics, the National Natural Science Foundation of China, the Guangdong provincial government, the Shenzhen municipal government, the China General Nuclear Power Group, the Research Grants Council of the Hong Kong Special Administrative Region of China, the Ministry of Education in Taiwan, the U.S. National Science Foundation, the Ministry of Education, Youth, and Sports of the Czech Republic, the Charles University Research Centre (UNCE), the Joint Institute of Nuclear Research in Dubna, Russia, the National Commission of Scientific and Technological Research of Chile, We acknowledge Yellow River Engineering Consulting Co., Ltd., and China Railway 15th Bureau Group Co., Ltd., for building the underground laboratory. We are grateful for the ongoing cooperation from the China Guangdong Nuclear Power Group and China Light & Power Company. The PROSPECT experiment is supported by the following sources: U.S. Department of Energy (DOE) Office of Science, Office of High Energy Physics under Awards No. DE-SC0016357 and No. DE-SC0017660 to Yale University, under Award No. DE-SC0017815 to Drexel University, University of Hawaii DOE Grant No. DE-SC0010504, under Award No. DE-SC0008347 to Illinois Institute of Technology, under Award No. DE-SC0016060 to Temple University, under Contract No. DE-SC0012704 to Brookhaven National Laboratory, and under Work Proposal No. SCW1504 to Lawrence Livermore National Laboratory. This work was performed under the auspices of the U.S. Department of Energy by Lawrence Livermore National Laboratory under Contract No. DE-AC52-07NA27344 and by Oak Ridge National Laboratory under Contract No. DE-AC05-00OR22725. Additional funding for the experiment was provided by the Heising-Simons Foundation under Grant No. 2016-117 to Yale University. J. K. G. is supported through the NSF Graduate Research Fellowship Program and A. C. performed work with support from the Nuclear Nonproliferation International Safeguards Fellowship Program sponsored by the National Nuclear Security Administrations Office of International Nuclear Safeguards (NA-241). This work was also supported by the Canada First Research Excellence Fund (CFREF), and the Natural Sciences and Engineering Research Council of Canada (NSERC) Discovery program under Grant No. RGPIN-418579, and Province of Ontario. We further acknowledge support from Yale University, the Illinois Institute of Technology, Temple University, Brookhaven National Laboratory, the Lawrence Livermore National Laboratory LDRD program, the National Institute of Standards and Technology, and Oak Ridge National Laboratory. We gratefully acknowledge the support and hospitality of the High Flux Isotope Reactor and Oak Ridge National Laboratory, managed by UT-Battelle for the U.S. Department of Energy.
Funding AgencyGrant Number
Ministry of Science and Technology (Taipei)UNSPECIFIED
Chinese Academy of SciencesUNSPECIFIED
National Natural Science Foundation of ChinaUNSPECIFIED
Guangdong Provincial GovernmentUNSPECIFIED
Shenzhen Municipal GovernmentUNSPECIFIED
China General Nuclear Power GroupUNSPECIFIED
Research Grants Council of Hong KongUNSPECIFIED
Ministry of Education (Taipei)UNSPECIFIED
Ministry of Education, Youth and Sports (Czech Republic)UNSPECIFIED
Charles UniversityUNSPECIFIED
Joint Institute of Nuclear ResearchUNSPECIFIED
Comisión Nacional de Investigación Científica y Tecnológica (CONICYT)UNSPECIFIED
Department of Energy (DOE)DE-SC0016357
Department of Energy (DOE)DE-SC0017660
Department of Energy (DOE)DE-SC0017815
Department of Energy (DOE)DE-SC0010504
Department of Energy (DOE)DE-SC0008347
Department of Energy (DOE)DE-SC0016060
Department of Energy (DOE)DE-SC0012704
Lawrence Livermore National LaboratorySCW1504
Department of Energy (DOE)DE-AC52-07NA27344
Department of Energy (DOE)DE-AC05-00OR22725
Heising-Simons Foundation2016-117
NSF Graduate Research FellowshipUNSPECIFIED
National Nuclear Security AdministrationNA-241
Canada First Research Excellence FundUNSPECIFIED
Natural Sciences and Engineering Research Council of Canada (NSERC)RGPIN-418579
Ontario Ministry of Economic Development and InnovationUNSPECIFIED
Issue or Number:8
Record Number:CaltechAUTHORS:20220415-992764900
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:114339
Deposited By: Tony Diaz
Deposited On:18 Apr 2022 17:05
Last Modified:18 Apr 2022 17:05

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