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327 results on '"D. McKeown"'

1. Negative pressure ventilation protects the brain

Author: C. M. van Rijn, J. van Egmond, D. Howard, M. G. Coulthard, P. Perella, J. H. M. Roberts, and D. McKeown
Subjects: Medical emergencies. Critical care. Intensive care. First aid, RC86-88.9
Published: 2022
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2. Charged-current non-standard neutrino interactions at Daya Bay

Author: The Daya Bay collaboration, F. P. An, W. D. Bai, A. B. Balantekin, M. Bishai, S. Blyth, G. F. Cao, J. Cao, J. F. Chang, Y. Chang, H. S. Chen, H. Y. Chen, S. M. Chen, Y. Chen, Y. X. Chen, Z. Y. Chen, J. Cheng, Y.-C. Cheng, Z. K. Cheng, J. J. Cherwinka, M. C. Chu, J. P. Cummings, O. Dalager, F. S. Deng, X. Y. Ding, Y. Y. Ding, M. V. Diwan, T. Dohnal, D. Dolzhikov, J. Dove, K. V. Dugas, H. Y. Duyang, D. A. Dwyer, J. P. Gallo, M. Gonchar, G. H. Gong, H. Gong, W. Q. Gu, J. Y. Guo, L. Guo, X. H. Guo, Y. H. Guo, Z. Guo, R. W. Hackenburg, Y. Han, S. Hans, M. He, K. M. Heeger, Y. K. Heng, Y. K. Hor, Y. B. Hsiung, B. Z. Hu, J. R. Hu, T. Hu, Z. J. Hu, H. X. Huang, J. H. Huang, X. T. Huang, Y. B. Huang, P. Huber, D. E. Jaffe, K. L. Jen, X. L. Ji, X. P. Ji, R. A. Johnson, D. Jones, L. Kang, S. H. Kettell, S. Kohn, M. Kramer, T. J. Langford, J. Lee, J. H. C. Lee, R. T. Lei, R. Leitner, J. K. C. Leung, F. Li, H. L. Li, J. J. Li, Q. J. Li, R. H. Li, S. Li, S. C. Li, W. D. Li, X. N. Li, X. Q. Li, Y. F. Li, Z. B. Li, H. Liang, C. J. Lin, G. L. Lin, S. Lin, J. J. Ling, J. M. Link, L. Littenberg, B. R. Littlejohn, J. C. Liu, J. L. Liu, J. X. Liu, C. Lu, H. Q. Lu, K. B. Luk, B. Z. Ma, X. B. Ma, X. Y. Ma, Y. Q. Ma, R. C. Mandujano, C. Marshall, K. T. McDonald, R. D. McKeown, Y. Meng, J. Napolitano, D. Naumov, E. Naumova, T. M. T. Nguyen, J. P. Ochoa-Ricoux, A. Olshevskiy, J. Park, S. Patton, J. C. Peng, C. S. J. Pun, F. Z. Qi, M. Qi, X. Qian, N. Raper, J. Ren, C. Morales Reveco, R. Rosero, B. Roskovec, X. C. Ruan, B. Russell, H. Steiner, J. L. Sun, T. Tmej, W.-H. Tse, C. E. Tull, Y. C. Tung, B. Viren, V. Vorobel, C. H. Wang, J. Wang, M. Wang, N. Y. Wang, R. G. Wang, W. Wang, X. Wang, Y. F. Wang, Z. Wang, Z. M. Wang, H. Y. Wei, L. H. Wei, W. Wei, L. J. Wen, K. Whisnant, C. G. White, H. L. H. Wong, E. Worcester, D. R. Wu, Q. Wu, W. J. Wu, D. M. Xia, Z. Q. Xie, Z. Z. Xing, H. K. Xu, J. L. Xu, T. Xu, T. Xue, C. G. Yang, L. Yang, Y. Z. Yang, H. F. Yao, M. Ye, M. Yeh, B. L. Young, H. Z. Yu, Z. Y. Yu, B. B. Yue, V. Zavadskyi, S. Zeng, Y. Zeng, L. Zhan, C. Zhang, F. Y. Zhang, H. H. Zhang, J. L. Zhang, J. W. Zhang, Q. M. Zhang, S. Q. Zhang, X. T. Zhang, Y. M. Zhang, Y. X. Zhang, Y. Y. Zhang, Z. J. Zhang, Z. P. Zhang, Z. Y. Zhang, J. Zhao, R. Z. Zhao, L. Zhou, H. L. Zhuang, and J. H. Zou
Subjects: Neutrino Mixing, Non-Standard Neutrino Properties, Neutrino Interactions, SMEFT, Nuclear and particle physics. Atomic energy. Radioactivity, QC770-798
Abstract: Abstract The full data set of the Daya Bay reactor neutrino experiment is used to probe the effect of the charged current non-standard interactions (CC-NSI) on neutrino oscillation experiments. Two different approaches are applied and constraints on the corresponding CC-NSI parameters are obtained with the neutrino flux taken from the Huber-Mueller model with a 5% uncertainty. For the quantum mechanics-based approach (QM-NSI), the constraints on the CC-NSI parameters ϵ eα and ϵ eα s $$ {\epsilon}_{e\alpha}^s $$ are extracted with and without the assumption that the effects of the new physics are the same in the production and detection processes, respectively. The approach based on the weak effective field theory (WEFT-NSI) deals with four types of CC-NSI represented by the parameters [ε X ] eα . For both approaches, the results for the CC-NSI parameters are shown for cases with various fixed values of the CC-NSI and the Dirac CP-violating phases, and when they are allowed to vary freely. We find that constraints on the QM-NSI parameters ϵ eα and ϵ eα s $$ {\epsilon}_{e\alpha}^s $$ from the Daya Bay experiment alone can reach the order O $$ \mathcal{O} $$ (0.01) for the former and O $$ \mathcal{O} $$ (0.1) for the latter, while for WEFT-NSI parameters [ε X ] eα , we obtain O $$ \mathcal{O} $$ (0.1) for both cases.
Published: 2024
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3. Evaluation of a Streptococcus suis strain that confers cross protection to serotype 1 and 1/2

Author: E. Collin, E. Bumgardner, D. McKeown, J. Alsdurf, K. Peters-Smith, and D. Stine
Published: 2022
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4. A high precision calibration of the nonlinear energy response at Daya Bay

Author: X. L. Ji, E. Naumova, D. A. Dwyer, T. J. Langford, L. Mora Lepin, H. M. Steiner, Y. Q. Ma, Xiao-yan Li, J. J. Cherwinka, N. Raper, Rupert Leitner, A. Higuera, Zhi-zhong Xing, Qinglong Wu, Kam Biu Luk, Christopher G. White, M. Qi, Tian Xue, J. L. Sun, S. H. Kettell, Artem Chukanov, X. B. Ma, Y. K. Heng, K. Whisnant, C. Li, Lawrence Pinsky, Jinjuan Ren, J. Park, Q. J. Li, Y. Z. Yang, X.F. Zhang, Tao Hu, N. Y. Wang, B. Viren, Maxim Gonchar, L. H. Wei, R. T. Lei, Qingmin Zhang, F. S. Deng, R. A. Johnson, Jiawen Zhang, J. H. C. Lee, Guanghua Gong, C. C. Zhang, Minfang Yeh, B. Z. Hu, Wei Wang, S. J. Patton, Lei Zhou, B. R. Littlejohn, Jia Xu, Yufeng Li, Y. M. Zhang, Jim Napolitano, Hongzhao Yu, K. L. Jen, Bing-Lin Young, Jianrun Hu, J. P. Cummings, Z. Guo, L. Guo, Y. Chang, Patrick Huber, Hanxiong Huang, L. Kang, Jun Cheng, Chao Zhang, X. T. Zhang, Baobiao Yue, H. L. Zhuang, Alexander Olshevskiy, J. K. C. Leung, Guey-Lin Lin, Honghan Gong, Shanfeng Li, Jonathan S. Lu, Yaoyu Zhang, Y. B. Huang, E. T. Worcester, F. Z. Qi, Vit Vorobel, Shengxin Lin, H. H. Zhang, Wei Li, S. Jetter, Yi Chen, Yunzhe Liu, Yuhang Guo, Siew Cheng Wong, N. Dash, K. T. McDonald, W. H. Tse, D. C. Jones, Meng Ye, Christopher L. Marshall, J. F. Chang, Jiaheng Zou, Y. K. Hor, J. J. Ling, D. A. Martinez Caicedo, Zhiyong Zhang, B. Roskovec, Zhijian Zhang, Zhibing Li, A. B. Balantekin, Richard Rosero, Z. M. Wang, H. R. Band, Changgen Yang, Jianglai Liu, X. C. Ruan, Mengsu Yang, K. Treskov, X. H. Guo, M. Dvořák, Feiyang Zhang, H. R. Pan, Michael Kramer, V. Pec, L. Lebanowski, Y. Y. Ding, C. Lu, Rui Zhang, S. Hans, R. G. Wang, Xingtao Huang, Simon Blyth, Yixue Chen, M. Z. Wang, Ming Chung Chu, R. W. Hackenburg, Chun S. J. Pun, Liang Zhan, M. Bishai, F. P. An, D. M. Xia, Z. Wang, Zhuojun Hu, K. M. Heeger, Changjian Lin, Shaomin Chen, Jun Cao, Xiaolu Ji, L. S. Littenberg, Z. K. Cheng, Z. P. Zhang, S. F. Li, Y. X. Zhang, W. J. Wu, Dmitry V. Naumov, D. Adey, L. W. Koerner, X. Wang, R. D. McKeown, D. Cao, D. E. Jaffe, C. E. Tull, Miao He, Haoqi Lu, Y. F. Wang, Haosheng Chen, J. M. Link, Yanlin Liu, Hongliang Li, Jing Wang, S. K. Lin, Hai Liang, Liangjian Wen, Guofu Cao, Jingyuan Guo, Juan Pedro Ochoa-Ricoux, Jen-Chieh Peng, Xiaohui Qian, J. Lee, H. Y. Wei, J. Dove, Yuda Zeng, S. Zeng, H. L. H. Wong, Yuman Wang, W. Q. Gu, Zeyuan Yu, S. Kohn, Chunjie Wang, M. V. Diwan, X. Q. Li, Tadeas Dohnal, Lin Yang, Jinmei Liu, Jing Zhao, S. Li, X. Y. Ma, I. Mitchell, Y. B. Hsiung, and Feng Li
Subjects: Physics, Nuclear and High Energy Physics, Physics::Instrumentation and Detectors, Scintillation counter, Detector, Calibration, Daya Bay Reactor Neutrino Experiment, Neutrino, Scintillator, Kinetic energy, Instrumentation, Energy (signal processing), Computational physics
Abstract: 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 originates from the particle-dependent light yield of the scintillator and charge-dependent electronics response. The nonlinearity model is constrained by γ calibration points from deployed and naturally occurring radioactive sources, the β spectrum from ^(12)B decays, and a direct measurement of the electronics nonlinearity with a new flash analog-to-digital converter readout system. Less than 0.5% uncertainty in the energy nonlinearity calibration is achieved for positrons of kinetic energies greater than 1 MeV.
Published: 2019
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5. Abstracts from the Tri-Service Emergency Medicine Conference, 2018Major incident triage and the evaluation of the Triage Sort as a secondary triage method.A retrospective analysis of frequent attenders to an urban tertiary paediatric Emergency Department.The FLURO Project 'FLURO BRAVO': a review of the approach and understanding of fluid resuscitation in the Tri-Service Emergency Medicine cadre from the perspective of care providers in a non-deployed care setting.What kills on the battlefield?6 months of Code Red Trauma – can we improve the management of traumatic haemorrhage?The use of supplemental oxygen in emergency patients – an evidence-based review and recommendations for clinical practice.Catastrophic haemorrhage in military major trauma patients: a retrospective database analysis of haemostatic agents used on the battlefield.Need for Recovery within a UK Emergency Department—results of a cross-sectional survey

Author: L Cottey, M Winstanley, L J Cottey, P Lewis, S Webster, J Lowe, M Thompson, J Vassallo, J E Smith, R Taylor, R Thorpe, C Wright, N Batrick, D Mckeown, F Chowdhury, C Aylwin, S Jefferys, T Woolley, B Graham, and M Mills
Subjects: General Medicine
Published: 2019
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6. Antineutrino Energy Spectrum Unfolding Based on the Daya Bay Measurement and Its Applications

Author: Jinjuan Ren, Dmitry Dolzhikov, Haifeng Li, Yuman Wang, S. Zeng, W. Q. Gu, Z. M. Wang, X. L. Ji, Minfang Yeh, Y. X. Zhang, C. Morales Reveco, Michael Kramer, Yufeng Li, K. L. Jen, Tomas Tmej, J. P. Gallo, Chun S. J. Pun, Zhuojun Hu, Shaomin Chen, Jun Cao, Haifeng Yao, J. J. Cherwinka, S. F. Li, Bangzheng Ma, Dmitry V. Naumov, Yinhong Zhang, Yongzhu Chen, Yue Meng, Q. J. Li, H. R. Pan, Kam-Biu Luk, N. Raper, H. Liang, Yixue Chen, Hongzhao Yu, Olivia Dalager, Z. Guo, D. C. Jones, Hanxiong Huang, L. Kang, N. Y. Wang, B. Viren, X. T. Huang, Tianpeng Xu, A. B. Balantekin, C. G. Yang, Zhi-zhong Xing, Baobiao Yue, W. J. Wu, Y. Z. Yang, R. D. McKeown, C. E. Tull, S. Kohn, L. H. Wei, Rong Zhao, R. T. Lei, F. Li, Simon Blyth, R. C. Mandujano, Guanghua Gong, Li Zhou, S. Hans, M. Z. Wang, Ming Chung Chu, W. H. Tse, Diru Wu, M. Ye, Jingyuan Guo, Chi Lin, K. T. McDonald, F. L. Wu, Jen-Chieh Peng, Y. K. Hor, Jianrun Hu, Qinglong Wu, Junwei Huang, Jianglai Liu, J. Dove, Yuda Zeng, J. M. Link, J. P. Cummings, L. Guo, Alexander Olshevskiy, M. Qi, Tian Xue, M. Bishai, Chao Zhang, S. J. Patton, Y. K. Heng, H. S. Chen, Xiaohui Qian, J. Lee, H. Y. Wei, K. M. Heeger, Zhijian Zhang, Rupert Leitner, L. S. Littenberg, H. L. H. Wong, H. H. Zhang, H. L. Zhuang, K. Treskov, Richard Rosero, Juan Pedro Ochoa-Ricoux, X. Wang, J. J. Ling, B. R. Littlejohn, M. Grassi, D. E. Jaffe, Miao He, E. Naumova, D. A. Dwyer, B. Z. Hu, Haoqi Lu, T. J. Langford, Ruhui Li, Yaoyu Zhang, Y. B. Huang, Vitalii Zavadskyi, Y. F. Wang, Y. H. Chang, Vit Vorobel, S. Zhang, Jing Wang, T. Hu, Xiaolu Ji, Wei Li, H. M. Steiner, R. W. Hackenburg, Y. Q. Ma, Z. Wang, Honghan Gong, K. Whisnant, Zhiyong Zhang, J. Cheng, Yuhang Guo, B. Roskovec, Jiaheng Zou, D. M. Xia, F. S. Deng, Bing-Lin Young, Liangjian Wen, Guofu Cao, X. C. Ruan, Z. K. Cheng, Z. P. Zhang, Jianmin Li, Y. Y. Ding, Fengpeng An, Zhangquan Xie, Qingmin Zhang, Jim Napolitano, W. Wang, Y. B. Hsiung, Z. Y. Yu, M. V. Diwan, X. Q. Li, H. K. Xu, Patrick Huber, Tadeas Dohnal, J. L. Sun, X. T. Zhang, J. Park, T. M. T. Nguyen, J. H. C. Lee, Z. B. Li, Shengxin Lin, E. T. Worcester, Lin Yang, F. Z. Qi, Jinmei Liu, Jing Zhao, X. Y. Ma, Christopher L. Marshall, J. F. Chang, X. H. Guo, Jiawen Zhang, M. Dvořák, C. H. Wang, R. G. Wang, Feiyang Zhang, Liang Zhan, Christopher G. White, C. Lu, J. L. Xu, Shanfeng Li, Guey-Lin Lin, Jian Liu, J. K. C. Leung, S. H. Kettell, X. B. Ma, Maxim Gonchar, Xinglong Li, and R. A. Johnson
Subjects: Physics, Nuclear and High Energy Physics, Isotope, Fissile material, 010308 nuclear & particles physics, Fission, Detector, FOS: Physical sciences, Astronomy and Astrophysics, 01 natural sciences, Spectral line, Physics::Geophysics, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), Inverse beta decay, 0103 physical sciences, Energy spectrum, High Energy Physics::Experiment, 010306 general physics, Nuclear Experiment, Instrumentation, Energy (signal processing)
Abstract: The prediction of reactor antineutrino spectra will play a crucial role as reactor experiments enter the precision era. The positron energy spectrum of 3.5 million antineutrino inverse beta decay reactions observed by the Daya Bay experiment, in combination with the fission rates of fissile isotopes in the reactor, is used to extract the positron energy spectra resulting from the fission of specific isotopes. This information can be used to produce a precise, data-based prediction of the antineutrino energy spectrum in other reactor antineutrino experiments with different fission fractions than Daya Bay. The positron energy spectra are unfolded to obtain the antineutrino energy spectra by removing the contribution from detector response with the Wiener-SVD unfolding method. Consistent results are obtained with other unfolding methods. A technique to construct a data-based prediction of the reactor antineutrino energy spectrum is proposed and investigated. Given the reactor fission fractions, the technique can predict the energy spectrum to a 2% precision. In addition, we illustrate how to perform a rigorous comparison between the unfolded antineutrino spectrum and a theoretical model prediction that avoids the input model bias of the unfolding method., 22 pages, 10 figures, 6 supplemental materials
Published: 2021

7. Improved Constraints on Sterile Neutrino Mixing from Disappearance Searches in the MINOS, MINOS+ , Daya Bay, and Bugey-3 Experiments

Author: J. L. Sun, E. T. Worcester, F. Z. Qi, Jingyuan Guo, X. H. Guo, M. Dvořák, C. H. Wang, Feiyang Zhang, Richard Rosero, Jen-Chieh Peng, X. L. Ji, J. Park, J. H. C. Lee, J. P. Gallo, Miao He, A. E. Kreymer, S. V. Cao, J. Dove, Yuda Zeng, P. Lucas, Marvin L Marshak, Shanfeng Li, Chun S. J. Pun, Zhuojun Hu, D. C. Jones, Li Zhou, Christopher L. Marshall, J. F. Chang, A. B. Balantekin, Diru Wu, N. Poonthottathil, Yunzhe Liu, D. M. Xia, Shaomin Chen, Jun Cao, R. Chen, N. Graf, Y. Y. Ding, S. Hans, C. Lu, J. L. Xu, Rakesh Sharma, R. W. Hackenburg, S. R. Hahn, Haifeng Yao, S. Childress, S. H. Kettell, X. B. Ma, A. Aurisano, Honghan Gong, Maxim Gonchar, Xinglong Li, Z. Wang, S. F. Li, R. A. Johnson, H. H. Zhang, Jiawen Zhang, Fengpeng An, Yuhang Guo, Alexander Olshevskiy, Siew Cheng Wong, H. R. Band, Guey-Lin Lin, Jonathan S. Lu, Dmitry V. Naumov, Lin Yang, J. K. Nelson, D. E. Jaffe, H. Liang, Yixue Chen, G. B. Mills, Z. Y. Yu, Z. K. Cheng, K. Whisnant, J. J. Ling, Karol Lang, Z. P. Zhang, J. R. Meier, Jinmei Liu, Simon Blyth, J. Cheng, M. Kordosky, Jing Zhao, S. Li, X. Y. Ma, R. Mehdiyev, S. J. Patton, J. Schneps, Andrew Blake, M. Z. Wang, Ming Chung Chu, Zhangquan Xie, H. L. Zhuang, Michael Kramer, I. Anghel, A. Timmons, C. Morales Reveco, F. L. Wu, Y. X. Zhang, M. M. Pfützner, R. K. Plunkett, Yufeng Li, K. L. Jen, Ž. Pavlović, W. J. Wu, Vit Vorobel, R. D. McKeown, Wei Li, Artem Chukanov, N. Dash, Yue Meng, P. Sail, M. V. Diwan, Zhiyong Zhang, B. Roskovec, John Evans, X. Q. Li, M. Qi, M. Bishai, Tadeas Dohnal, Hongzhao Yu, Jing Wang, A. Schreckenberger, Nasir Shaheed, Hanxiong Huang, Z. B. Li, Y. Z. Yang, L. Kang, Qingmin Zhang, J. K. C. Leung, Gregory J Pawloski, R. T. Lei, Hongliang Li, P. Gouffon, X. Qiu, M. Ye, W. Wang, B. Z. Hu, N. Y. Wang, M. A. Thomson, D. Naples, B. Viren, Jianrun Hu, Stanley G. Wojcicki, L. Guo, Zhijian Zhang, Jiachen Li, J. O'Connor, Alec Habig, Y. B. Hsiung, Chao Zhang, K. Grzelak, J. J. Cherwinka, Xiaolu Ji, Liangjian Wen, D. D. Phan, Guofu Cao, L. H. Wei, K. Treskov, N. Raper, Jinjuan Ren, Q. J. Li, W. A. Mann, R. Hatcher, R. A. Gomes, Jim Napolitano, N. Tagg, A. Radovic, Qinglong Wu, G.D. Barr, Junwei Huang, Kam Biu Luk, G. J. Feldman, Yinhong Zhang, Z. Guo, Tian Xue, A. Holin, Juergen Thomas, Y. K. Heng, K. T. McDonald, J. Todd, Yanhui Liu, A. C. Weber, A. Perch, X. C. Ruan, Xin Qian, Guanghua Gong, Joao A B Coelho, Chi Lin, Juan Pedro Ochoa-Ricoux, L. Mora Lepin, A. Higuera, X. T. Huang, C. G. Yang, H. R. Pan, Zhi-zhong Xing, S. De Rijck, C. E. Tull, D. Torretta, J. Lee, H. Y. Wei, H. L. H. Wong, J. Hartnell, H. S. Chen, T. J. Carroll, P. Adamson, Y. K. Hor, Jianglai Liu, L. W. Koerner, X. Wang, Haoqi Lu, Y. F. Wang, W. Flanagan, T. Tmej, S. Kohn, S. Germani, Warner A. Miller, R. Toner, E. Naumova, D. A. Dwyer, T. J. Langford, A. Sousa, Yuman Wang, S. Zeng, W. Q. Gu, H. M. Steiner, P. Vahle, Y. Q. Ma, F. S. Deng, Bing-Lin Young, B. R. Littlejohn, Yaoyu Zhang, Y. B. Huang, Patrick Huber, Y. H. Chang, X. T. Zhang, Shengxin Lin, C. M. Castromonte, T. Hu, D. A. Martinez Caicedo, Minfang Yeh, Yongzhu Chen, Baobiao Yue, F. Li, R. G. Wang, W. H. Tse, R. J. Nichol, N. Mayer, Liang Zhan, K. M. Heeger, Christopher G. White, S. C. Tognini, Rupert Leitner, D. Dolzhikov, T. Xu, J. M. Link, J. P. Cummings, mrow, Leigh H. Whitehead, M. Y. Gabrielyan, L. S. Littenberg, M. C. Sanchez, R. B. Pahlka, and Z. M. Wang
Subjects: Physics, Particle physics, Sterile neutrino, Muon, General Physics and Astronomy, 01 natural sciences, MiniBooNE, MINOS, 0103 physical sciences, Muon neutrino, Neutron, 010306 general physics, Electron neutrino, Mixing (physics)
Abstract: Searches for electron antineutrino, muon neutrino, and muon antineutrino disappearance driven by sterile neutrino mixing have been carried out by the Daya Bay and MINOS+ collaborations. This Letter presents the combined results of these searches, along with exclusion results from the Bugey-3 reactor experiment, framed in a minimally extended four-neutrino scenario. Significantly improved constraints on the θ_{μe} mixing angle are derived that constitute the most constraining limits to date over five orders of magnitude in the mass-squared splitting Δm_{41}^{2}, excluding the 90% C.L. sterile-neutrino parameter space allowed by the LSND and MiniBooNE observations at 90% CL_{s} for Δm_{41}^{2}
Published: 2020
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8. Search For Electron-Antineutrinos Associated With Gravitational-Wave Events GW150914, GW151012, GW151226, GW170104, GW170608, GW170814, and GW170817 at Daya Bay

Author: B. R. Littlejohn, Yaoyu Zhang, Y. B. Huang, J. P. Gallo, R. W. Hackenburg, Y. H. Chang, Z. Wang, Chun S. J. Pun, Zhuojun Hu, Shaomin Chen, Y. K. Hor, Jun Cao, Hongzhao Yu, Hanxiong Huang, L. Kang, Haifeng Yao, Jianglai Liu, S. F. Li, Dmitry V. Naumov, Xin Qian, Z. Y. Yu, S. J. Patton, K. Whisnant, J. Cheng, X. Wang, Haoqi Lu, A. Higuera, X. T. Huang, C. G. Yang, Olivia Dalager, M. V. Diwan, X. Q. Li, Tadeas Dohnal, J. K. C. Leung, X. C. Ruan, Zhi-zhong Xing, Z. B. Li, D. M. Xia, H. L. Zhuang, Y. F. Wang, Michael Kramer, E. T. Worcester, F. Z. Qi, S. H. Kettell, X. B. Ma, Jinjuan Ren, Christopher L. Marshall, J. F. Chang, Christopher G. White, H. R. Band, H. Liang, Yixue Chen, N. Y. Wang, B. Viren, Q. J. Li, Y. Z. Yang, L. H. Wei, H. S. Chen, R. T. Lei, W. J. Wu, R. D. McKeown, Qingmin Zhang, Maxim Gonchar, Xinglong Li, R. A. Johnson, X. L. Ji, Rupert Leitner, Z. M. Wang, D. E. Jaffe, Guanghua Gong, C. Lu, Chi Lin, Jim Napolitano, Jiawen Zhang, Jingyuan Guo, Jen-Chieh Peng, Jianrun Hu, Qinglong Wu, Yinhong Zhang, Z. Guo, J. J. Cherwinka, Li Zhou, J. Dove, Yuda Zeng, N. Raper, Tian Xue, Miao He, L. Guo, Xiaolu Ji, C. Morales Reveco, Chao Zhang, X. H. Guo, Guey-Lin Lin, Jonathan S. Lu, D. A. Martinez Caicedo, Jia Xu, Yufeng Li, Y. K. Heng, K. T. McDonald, M. Dvořák, C. H. Wang, Vit Vorobel, K. L. Jen, Tomas Tmej, Feiyang Zhang, Jianmin Li, M. Ye, Wei Li, S. Kohn, Y. Y. Ding, D. C. Jones, H. H. Zhang, R. G. Wang, A. B. Balantekin, Liang Zhan, F. L. Wu, Zhiyong Zhang, B. Roskovec, Fengpeng An, Tianpeng Xu, Patrick Huber, X. T. Zhang, Minfang Yeh, Shengxin Lin, Shanfeng Li, S. Hans, J. L. Sun, Juan Pedro Ochoa-Ricoux, J. Park, J. H. C. Lee, Alexander Olshevskiy, Yongzhu Chen, J. J. Ling, Baobiao Yue, Honghan Gong, Zhijian Zhang, J. Lee, H. Y. Wei, Yuhang Guo, H. L. H. Wong, Jiaheng Zou, K. Treskov, T. Hu, F. Li, Richard Rosero, W. H. Tse, H. R. Pan, C. E. Tull, Y. X. Zhang, K. M. Heeger, Yue Meng, Kam-Biu Luk, Simon Blyth, M. Z. Wang, Ming Chung Chu, Yuman Wang, S. Zeng, W. Q. Gu, M. Qi, M. Bishai, B. Z. Hu, F. S. Deng, Bing-Lin Young, Diru Wu, L. S. Littenberg, E. Naumova, D. A. Dwyer, W. Wang, T. J. Langford, Y. B. Hsiung, Lin Yang, Jinmei Liu, Jing Zhao, X. Y. Ma, H. M. Steiner, Y. Q. Ma, J. M. Link, J. P. Cummings, Jing Wang, Liangjian Wen, Guofu Cao, Z. K. Cheng, Z. P. Zhang, and Zhangquan Xie
Subjects: Physics, High Energy Astrophysical Phenomena (astro-ph.HE), Nuclear and High Energy Physics, Range (particle radiation), Physics - Instrumentation and Detectors, 010308 nuclear & particles physics, Gravitational wave, FOS: Physical sciences, Astronomy and Astrophysics, Electron, Astrophysics, Instrumentation and Detectors (physics.ins-det), 01 natural sciences, Spectral line, High Energy Physics - Experiment, Neutron star, High Energy Physics - Experiment (hep-ex), 0103 physical sciences, GW151226, Monochromatic color, Neutrino, 010306 general physics, Astrophysics - High Energy Astrophysical Phenomena, Instrumentation
Abstract: Providing a possible connection between neutrino emission and gravitational-wave (GW) bursts is important to our understanding of the physical processes that occur when black holes or neutron stars merge. In the Daya Bay experiment, using data collected from December 2011 to August 2017, a search has been performed for electron-antineutrino signals coinciding with detected GW events, including GW150914, GW151012, GW151226, GW170104, GW170608, GW170814, and GW170817. We used three time windows of $\mathrm{\pm 10~s}$, $\mathrm{\pm 500~s}$, and $\mathrm{\pm 1000~s}$ relative to the occurrence of the GW events, and a neutrino energy range of 1.8 to 100 MeV to search for correlated neutrino candidates. The detected electron-antineutrino candidates are consistent with the expected background rates for all the three time windows. Assuming monochromatic spectra, we found upper limits (90% confidence level) on electron-antineutrino fluence of $(1.13~-~2.44) \times 10^{11}~\rm{cm^{-2}}$ at 5 MeV to $8.0 \times 10^{7}~\rm{cm^{-2}}$ at 100 MeV for the three time windows. Under the assumption of a Fermi-Dirac spectrum, the upper limits were found to be $(5.4~-~7.0)\times 10^{9}~\rm{cm^{-2}}$ for the three time windows., Comment: 16 pages, 12 figures, 9 tables
Published: 2020
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9. The Assessment and Sustainable Management of Sickle Cell Disease in the Indigenous Tharu Population of Nepal

Author: Brendan Arnold, Monica D. McKeown, Videsh Kapoor, Carson Gill, Jordan Yeo, Carolyn M Bell, Eric Busto, Abhiram Cherukupalli, Armaan K. Malhotra, and Miles Marchand
Subjects: Male, Hemoglobin, Sickle, 030231 tropical medicine, Clinical Biochemistry, Population, Anemia, Sickle Cell, Disease, Indigenous, 03 medical and health sciences, 0302 clinical medicine, Nepal, Environmental health, Prevalence, medicine, Humans, 030212 general & internal medicine, education, Genetics (clinical), Disease burden, Sickle cell trait, education.field_of_study, business.industry, Homozygote, Biochemistry (medical), Hematology, medicine.disease, Sickle cell anemia, Hemoglobinopathy, Sustainable management, Female, business
Abstract: Sickle cell disease is an inherited hemoglobinopathy associated with significant morbidity and mortality. Reports suggest a high sickle cell disease burden among the indigenous Tharu population of Nepal, who for centuries have inhabited regions where malaria is endemic. Unfortunately, health care resources are limited and often inaccessible for Tharu individuals suffering from sickle cell disease. We conducted a large-scale screening effort to estimate the prevalence of Hb S (HBB: c.20AT) among the Tharu population and delivered community-based education sessions to increase sickle cell disease awareness. A total of 2899 Tharu individuals aged 6 months to 40 years in the rural district of Dang in Western Nepal were screened using a sickling test, of whom, 271 [9.3%; 95% confidence interval (95% CI): 8.3-10.4%] screened positive for Hb S. Those who screened positive were offered diagnostic gel electrophoresis testing. Of the 133 individuals who underwent diagnostic testing, 75.9% (n = 101) were confirmed to be Hb AS heterozygotes, 4.5% (n = 6) were confirmed to be Hb SS homozygotes and 19.5% (n = 26) were false positives. These findings support a large burden of sickle cell disease among the Tharu population and highlight the importance of appropriate resource allocation and management. With a positive predictive value of 80.0% (95% CI: 73.0-87.0%), the sickling test in conjunction with raising local sickle cell disease awareness may be a simple and sustainable way to promote access to health resources.
Published: 2017
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10. Study of the wave packet treatment of neutrino oscillation at Daya Bay

Author: Ya Ping Cheng, Jie Ren, David E. Jaffe, Xin Qian, Ze Yuan Yu, Qiu Mei Ma, Ji Liang Sun, Christopher G. White, Zhe Ning, Yufeng Li, Wenju Huo, Jia Jie Ling, Meng Ting Yang, Simon Blyth, Ming Chung Chu, Han Yu Wei, Zhi-zhong Xing, Rupert Leitner, Ya Yun Ding, Chang Gen Yang, T. Wise, N. Raper, Simon John Patton, Qiu Ju Li, Jun Cao, Akif Baha Balantekin, Shao Min Chen, S. Jetter, Yu-Cheng Lin, John Kon Chong Leung, Jia Heng Zou, Qun Wu, M. Bishai, Yi Ming Zhang, Yue Kun Heng, William R Edwards, Xiao Lu Ji, Min Fang Yeh, Zhe Wang, Zhaokan Cheng, Hao Liang, Jason C.S. Pun, Ka Vang Tsang, Sam Kohn, Zheng Wang, Wei Wang, Dmitry V. Naumov, Yat Long Chan, Xiang Pan Ji, Yasuhiro Nakajima, de Arcos Jose, Xuantong Zhang, Yu Qian Ma, L. Whitehead, Meng Yun Guan, W. Tang, Yun Chang, Jia Hua Cheng, Vit Vorobel, Zhipeng Lv, Jim Napolitano, Jason Dove, Kin Keung Kwan, Xiao Yan Ma, Yi Xin Zhang, W. J. Wu, Tao Hu, Alexander Olshevskiy, Bing Lin Young, Xi Wang, R. D. McKeown, Zhijian Zhang, Zhimin Wang, J. Joshi, Herbert M Steiner, H. R. Pan, Jia Shu Lu, Ronald Gill, Richard Rosero, K. Treskov, Sheng Chao Li, Yi Fang Wang, Gao Song Li, Chang Guo Lu, Chia-Hao Wu, Ghulam Hussain, Maxim Gonchar, Xing Tao Huang, Hui Gong, Nan Zhou, Zhiyong Zhang, Jian Yi Xu, Han Xiong Huang, Randy Allan Johnson, P. Jaffke, Bedrich Roskovec, David A Martinez Caicedo, D. W. Liu, Li Kang, Tao Xue, B. Viren, Yee Bob Hsiung, Wen Qiang Gu, Shan Zeng, Ran Han, Fei Li, Maria Dolgareva, Jin Fan Chang, Juan Pedro Ochoa-Ricoux, H. H. Zhang, C. E. Tull, M. V. Diwan, H. R. Band, V. Pec, Shanfeng Li, Ziyi Guo, E. T. Worcester, Dong Mei Xia, Zi Ping Zhang, Yu Chen, Wei Hu, Jen-Chieh Peng, M. H. Ye, S. Hans, Ming Qi, Rui Guang Wang, Ian Mitchell, Rui Ting Lei, Deng Jie Li, Meng Wang, Qing Wang Zhao, Kam Biu Luk, Shih Kai Lin, Artem Chukanov, Wei Li Zhong, Chan Fai Wong, He Sheng Chen, Kou Lun Jen, Lawrence Pinsky, Chao Li, Jing Kai Xia, Nai Yan Wang, Michael Mooney, T. Kwok, Guey-Lin Lin, Xue Feng Ding, B. R. Littlejohn, Jia Wen Zhang, Aaron Higuera, Qing Min Zhang, Z. B. Li, Jian Bin Jiao, Jongmin Lee, Marco Grassi, Dmitriy Taychenachev, Miao He, Jiang Lai Liu, Lei Guo, Man-wai Kwok, Hong Lin Zhuang, Jie Cheng, Chao Zhang, Jenny Hc Lee, En Chuan Huang, Yury Malyshkin, Xin Heng Guo, JohnP Cummings, Feng Peng An, Nicolás Viaux, Lei Yang, Jonathan M. Link, K. M. Heeger, JeffJ Cherwinka, Quan You Chen, Joseph Yuen-Keung Hor, Yumei Zhang, S H Kettell, Hao Qi Lu, K. Whisnant, Bei Zhen Hu, Cheng-Ju Stephen Lin, Guang Hua Gong, Matt Kramer, Jimmy Ngai, E. Naumova, D. A. Dwyer, T. J. Langford, Jaewon Park, Xu Bo Ma, Jin Chang Liu, Liangjian Wen, Guofu Cao, Cen Wuron, Gong Xing Sun, Zi Yan Deng, Jie Zhao, Chung Hsiang Wang, Y. Xu, Hin-Lok Henoch Wong, De Wen Cao, R. W. Hackenburg, Weidong Li, Xi Chao Ruan, Fa Zhi Qi, Liang Zhan, Patrick Huber, Shengxin Lin, Li Zhou, Changwei Loh, Ji Lei Xu, Li Chu Chang, Yu Bin Zhao, Zi Ping Ye, Kwong Lau, L. S. Littenberg, Yi Chen, Hai Bo Yang, Ma Sheng Yang, X. N. Li, and L. Lebanowski
Subjects: Physics and Astronomy (miscellaneous), Plane wave, FOS: Physical sciences, lcsh:Astrophysics, Atomic, 01 natural sciences, High Energy Physics - Experiment, Nuclear physics, Momentum, High Energy Physics - Experiment (hep-ex), Particle and Plasma Physics, High Energy Physics - Phenomenology (hep-ph), 0103 physical sciences, lcsh:QB460-466, Nuclear, lcsh:Nuclear and particle physics. Atomic energy. Radioactivity, 010306 general physics, Dispersion (water waves), Neutrino oscillation, Engineering (miscellaneous), Physics, Quantum Physics, hep-ex, 010308 nuclear & particles physics, Oscillation, Detector, Molecular, hep-ph, Nuclear & Particles Physics, High Energy Physics - Phenomenology, lcsh:QC770-798, High Energy Physics::Experiment, Neutrino, Energy (signal processing)
Abstract: The disappearance of reactor $$\bar{\nu }_e$$ ν ¯ e observed by the Daya Bay experiment is examined in the framework of a model in which the neutrino is described by a wave packet with a relative intrinsic momentum dispersion $$\sigma _\mathrm{{rel}}$$ σ rel . Three pairs of nuclear reactors and eight antineutrino detectors, each with good energy resolution, distributed among three experimental halls, supply a high-statistics sample of $$\bar{\nu }_e$$ ν ¯ e acquired at nine different baselines. This provides a unique platform to test the effects which arise from the wave packet treatment of neutrino oscillation. The modified survival probability formula was used to fit Daya Bay data, providing the first experimental limits: $$2.38 \times 10^{-17}< \sigma _\mathrm{{rel}} < 0.23$$ 2.38 × 10 - 17 < σ rel < 0.23 . Treating the dimensions of the reactor cores and detectors as constraints, the limits are improved: $$10^{-14} \lesssim \sigma _\text {rel} < 0.23$$ 10 - 14 ≲ σ rel < 0.23 , and an upper limit of $$\sigma _\text {rel}
Published: 2017
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11. Extraction of the U235 and Pu239 Antineutrino Spectra at Daya Bay

Author: W. Wang, J. Park, Yuman Wang, S. Zeng, W. Q. Gu, Y. B. Hsiung, J. H. C. Lee, Hongzhao Yu, J. K. C. Leung, Minfang Yeh, Hanxiong Huang, L. Kang, V. Pec, S. Hans, Patrick Huber, S. H. Kettell, X. B. Ma, M. Qi, Yongzhu Chen, Alexander Olshevskiy, M. Bishai, Baobiao Yue, Jingyuan Guo, Jen-Chieh Peng, S. J. Patton, X. T. Zhang, Yunzhe Liu, J. Dove, Yuda Zeng, Miao He, H. H. Zhang, J. J. Ling, E. T. Worcester, M. V. Diwan, Shengxin Lin, Maxim Gonchar, Honghan Gong, F. Z. Qi, Michael Kramer, F. Li, B. Z. Hu, X. Q. Li, Xinglong Li, W. J. Wu, R. D. McKeown, H. L. Zhuang, R. A. Johnson, W. H. Tse, Vit Vorobel, Z. Y. Yu, Z. K. Cheng, Z. P. Zhang, D. C. Jones, Wei Li, A. B. Balantekin, Yuhang Guo, Y. Z. Yang, R. T. Lei, D. M. Xia, Siew Cheng Wong, Jiaheng Zou, Tadeas Dohnal, Jiawen Zhang, N. Dash, L. S. Littenberg, H. S. Chen, Y. X. Zhang, Yinhong Zhang, J. P. Cummings, Z. Guo, Jianrun Hu, Zhiyong Zhang, B. Roskovec, S. Kohn, X. C. Ruan, Rui Zhang, X. H. Guo, Xiaolu Ji, D. A. Martinez Caicedo, M. Dvořák, C. H. Wang, Feiyang Zhang, Kam-Biu Luk, K. M. Heeger, D. Cao, K. T. McDonald, Z. B. Li, J. J. Cherwinka, X. L. Ji, Richard Rosero, R. W. Hackenburg, D. E. Jaffe, Z. Wang, Yanhui Liu, N. Raper, Haifeng Li, E. Naumova, Juan Pedro Ochoa-Ricoux, Guey-Lin Lin, Jonathan S. Lu, Y. K. Hor, Lin Yang, J. M. Link, T. Hu, Y. Y. Ding, H. R. Band, Zhijian Zhang, Jianglai Liu, H. Liang, Yixue Chen, B. R. Littlejohn, K. Treskov, K. Whisnant, R. G. Wang, Shanfeng Li, J. Cheng, Jinmei Liu, Jing Zhao, Li Zhou, D. A. Dwyer, J. L. Sun, T. J. Langford, D. Adey, Yaoyu Zhang, Y. B. Huang, C. Li, Xin Qian, Liang Zhan, Simon Blyth, M. Z. Wang, S. Li, Ming Chung Chu, X. Y. Ma, Y. H. Chang, Guanghua Gong, Jing Wang, Chi Lin, L. Mora Lepin, Fengpeng An, Christopher L. Marshall, J. F. Chang, I. Mitchell, Artem Chukanov, Lawrence Pinsky, N. Y. Wang, B. Viren, Qingmin Zhang, A. Higuera, X. T. Huang, C. G. Yang, L. Guo, Zhi-zhong Xing, Chao Zhang, C. C. Zhang, L. H. Wei, Jinjuan Ren, Q. J. Li, Mengsu Yang, C. Lu, J. L. Xu, Christopher G. White, Qinglong Wu, Jim Napolitano, J. Lee, Tian Xue, Liangjian Wen, H. Y. Wei, Y. K. Heng, Guofu Cao, H. M. Steiner, H. L. H. Wong, Y. Q. Ma, H. R. Pan, C. E. Tull, F. S. Deng, M. Ye, Bing-Lin Young, Yufeng Li, K. L. Jen, Z. M. Wang, Chun S. J. Pun, Zhuojun Hu, Shaomin Chen, Jun Cao, S. F. Li, Dmitry V. Naumov, L. W. Koerner, X. Wang, Haoqi Lu, Y. F. Wang, Rupert Leitner, and X.F. Zhang
Subjects: Physics, Semileptonic decay, Isotope, Fission, General Physics and Astronomy, Inverse, 01 natural sciences, Spectral line, Nuclear physics, Inverse beta decay, 0103 physical sciences, 010306 general physics, Spectroscopy, Energy (signal processing)
Abstract: 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.
Published: 2019
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12. Improved measurement of the reactor antineutrino flux at Daya Bay

Author: Yinhong Zhang, J. P. Cummings, Z. Guo, X. L. Ji, H. S. Chen, K. T. McDonald, H. Y. Wei, F. S. Deng, Christopher L. Marshall, J. F. Chang, Jing Wang, S. K. Lin, F. Li, Z. K. Cheng, Z. P. Zhang, Y. Malyshkin, Liangjian Wen, Guofu Cao, Bing-Lin Young, W. H. Tse, C. Lu, T. Wise, M. Qi, J. J. Cherwinka, Li Zhou, Lin Yang, N. Raper, Jinmei Liu, Jing Zhao, S. Li, Jianglai Liu, X. Y. Ma, Yang Yang, H. R. Band, I. Mitchell, Yi Chen, Artem Chukanov, Michael Kramer, K. M. Heeger, Y. Chang, B. Z. Hu, Lawrence Pinsky, Chun S. J. Pun, Zhuojun Hu, Chang-Wei Loh, L. Mora Lepin, S. Kohn, Shanfeng Li, C. Li, H. Liang, Yixue Chen, S. J. Patton, Hongliang Li, L. Lebanowski, Y. Y. Ding, W. R. Edwards, Shaomin Chen, Jun Cao, Xiao-yan Li, A. Higuera, C. G. Yang, E. Naumova, D. A. Dwyer, W. Wang, J. M. Link, T. J. Langford, H. L. Zhuang, Rupert Leitner, Zhi-zhong Xing, Christopher G. White, Jinjuan Ren, Y. C. Lin, T. Hu, S. F. Li, Q. J. Li, Y. L. Chan, L. W. Koerner, H. M. Steiner, X.F. Zhang, X. Wang, M. Ye, Dmitry V. Naumov, Y. B. Hsiung, M. T. Yang, Haoqi Lu, Minfang Yeh, Y. F. Wang, Y. Q. Ma, M. V. Diwan, Honghan Gong, D. C. Jones, R. M. Qiu, X. Q. Li, Haijun Yang, Baobiao Yue, J. Park, B. R. Littlejohn, W. J. Wu, D. A. Martinez Caicedo, W. Gu, Jia Xu, Yufeng Li, K. L. Jen, Yuhang Guo, Siew Cheng Wong, A. B. Balantekin, R. D. McKeown, R. G. Wang, Jiaheng Zou, Z. M. Wang, Wenju Huo, N. Y. Wang, Liang Zhan, B. Viren, Patrick Huber, Yaoyu Zhang, Y. B. Huang, X. T. Zhang, Juan Pedro Ochoa-Ricoux, Shengxin Lin, Miao He, Yunzhe Liu, S. H. Kettell, X. B. Ma, Richard Rosero, Simon Blyth, M. Z. Wang, Ming Chung Chu, Maxim Gonchar, L. H. Wei, G. Hussain, R. A. Johnson, Yang Liu, Rui Zhang, Jiawen Zhang, J. H. C. Lee, Hongzhao Yu, Hanxiong Huang, L. Kang, K. Whisnant, Guey-Lin Lin, Jonathan S. Lu, J. Cheng, J. K. C. Leung, Chunjie Wang, Z. Y. Yu, R. W. Hackenburg, L. Guo, Qinglong Wu, Kam Biu Luk, H. H. Zhang, Tian Xue, Z. Wang, Chao Zhang, Y. K. Heng, Zhibing Li, Jen-Chieh Peng, H. R. Pan, J. Dove, X. C. Ruan, Guanghua Gong, C. E. Tull, Chi Lin, D. Adey, Xiaohui Qian, J. Lee, S. Zeng, M. Dolgareva, H. L. H. Wong, J. L. Sun, E. T. Worcester, F. Z. Qi, Xiaolu Ji, B. Roskovec, D. M. Xia, X. H. Guo, P. Zheng, Feiyang Zhang, Qingmin Zhang, D. Cao, R. T. Lei, D. E. Jaffe, Alexander Olshevskiy, Jim Napolitano, J. J. Ling, Zhijian Zhang, K. Treskov, F. P. An, Y. X. Zhang, C. C. Zhang, Xingtao Huang, M. Bishai, L. S. Littenberg, V. Pec, S. Hans, Mengsu Yang, Vit Vorobel, Wei Li, and Zhiyong Zhang
Subjects: Physics, Physics - Instrumentation and Detectors, hep-ex, 010308 nuclear & particles physics, Fission, Daya bay, Astrophysics::High Energy Astrophysical Phenomena, Analytical chemistry, FOS: Physical sciences, Flux, Instrumentation and Detectors (physics.ins-det), Detailed data, 01 natural sciences, High Energy Physics - Experiment, High Energy Physics - Experiment (hep-ex), 0103 physical sciences, Yield ratio, Neutron, High Energy Physics::Experiment, 010306 general physics, physics.ins-det
Abstract: 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 uncertainty improved by 29%. The corresponding mean fission fractions from the four main fission isotopes $^{235}$U, $^{238}$U, $^{239}$Pu, and $^{241}$Pu are 0.564, 0.076, 0.304, and 0.056, respectively. The ratio of measured to predicted antineutrino yield is found to be $0.952\pm0.014\pm0.023$ ($1.001\pm0.015\pm0.027$) for the Huber-Mueller (ILL-Vogel) model, where the first and second uncertainty are experimental and theoretical model uncertainty, respectively. This measurement confirms the discrepancy between the world average of reactor antineutrino flux and the Huber-Mueller model., 10 pages, 9 figures, and 2 tables
Published: 2019

13. Extraction of the ^{235}U and ^{239}Pu Antineutrino Spectra at Daya Bay

Author: D, Adey, F P, An, A B, Balantekin, H R, Band, M, Bishai, S, Blyth, D, Cao, G F, Cao, J, Cao, J F, Chang, Y, Chang, H S, Chen, S M, Chen, Y, Chen, Y X, Chen, J, Cheng, Z K, Cheng, J J, Cherwinka, M C, Chu, A, Chukanov, J P, Cummings, N, Dash, F S, Deng, Y Y, Ding, M V, Diwan, T, Dohnal, J, Dove, M, Dvořák, D A, Dwyer, M, Gonchar, G H, Gong, H, Gong, W Q, Gu, J Y, Guo, L, Guo, X H, Guo, Y H, Guo, Z, Guo, R W, Hackenburg, S, Hans, M, He, K M, Heeger, Y K, Heng, A, Higuera, Y K, Hor, Y B, Hsiung, B Z, Hu, J R, Hu, T, Hu, Z J, Hu, H X, Huang, X T, Huang, Y B, Huang, P, Huber, D E, Jaffe, K L, Jen, X L, Ji, X P, Ji, R A, Johnson, D, Jones, L, Kang, S H, Kettell, L W, Koerner, S, Kohn, M, Kramer, T J, Langford, J, Lee, J H C, Lee, R T, Lei, R, Leitner, J K C, Leung, C, Li, F, Li, H L, Li, Q J, Li, S, Li, S C, Li, S J, Li, W D, Li, X N, Li, X Q, Li, Y F, Li, Z B, Li, H, Liang, C J, Lin, G L, Lin, S, Lin, J J, Ling, J M, Link, L, Littenberg, B R, Littlejohn, J C, Liu, J L, Liu, Y, Liu, Y H, Liu, C, Lu, H Q, Lu, J S, Lu, K B, Luk, X B, Ma, X Y, Ma, Y Q, Ma, C, Marshall, D A, Martinez Caicedo, K T, McDonald, R D, McKeown, I, Mitchell, L, Mora Lepin, J, Napolitano, D, Naumov, E, Naumova, J P, Ochoa-Ricoux, A, Olshevskiy, H-R, Pan, J, Park, S, Patton, V, Pec, J C, Peng, L, Pinsky, C S J, Pun, F Z, Qi, M, Qi, X, Qian, N, Raper, J, Ren, R, Rosero, B, Roskovec, X C, Ruan, H, Steiner, J L, Sun, K, Treskov, W-H, Tse, C E, Tull, B, Viren, V, Vorobel, C H, Wang, J, Wang, M, Wang, N Y, Wang, R G, Wang, W, Wang, X, Wang, Y, Wang, Y F, Wang, Z, Wang, Z M, Wang, H Y, Wei, L H, Wei, L J, Wen, K, Whisnant, C G, White, H L H, Wong, S C F, Wong, E, Worcester, Q, Wu, W J, Wu, D M, Xia, Z Z, Xing, J L, Xu, T, Xue, C G, Yang, L, Yang, M S, Yang, Y Z, Yang, M, Ye, M, Yeh, B L, Young, H Z, Yu, Z Y, Yu, B B, Yue, S, Zeng, Y, Zeng, L, Zhan, 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, Zhang, J, Zhao, L, Zhou, H L, Zhuang, and J H, Zou
Abstract: 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.
Published: 2019

14. Measurement of the Antineutrino Spectrum from U235 Fission at HFIR with PROSPECT

Author: D. Davee, G. Deichert, D. Norcini, Michael Febbraro, R. L. Varner, J. M. Minock, M. V. Diwan, Chao Zhang, M. P. Mendenhall, A. B. Hansell, X. Zhang, B. Viren, J. T. Matta, Hans P. Mumm, H. R. Band, B. T. Foust, A. Galindo-Uribarri, Anna Erickson, B. R. Littlejohn, J. Nikkel, J. Wilhelmi, Y-R Yen, D. C. Jones, J. Insler, J. J. Cherwinka, A. B. Balantekin, S. Nour, K. Gilje, T. Wise, C. E. Gilbert, P. T. Surukuchi, S. Hans, D. Berish, O. Kyzylova, K. M. Heeger, D. E. Jaffe, C. D. Bryan, M. J. Dolinski, E. Romero-Romero, Aiwu Zhang, A. J. Conant, R. Neilson, J. LaRosa, P. E. Mueller, M. A. Tyra, Richard Rosero, Jim Napolitano, Denis E. Bergeron, D. J. Dean, Dmitry A. Pushin, Minfang Yeh, C.D. Bass, R. D. McKeown, B. T. Hackett, Xin Lu, Andrew A. Cox, Xiaolu Ji, J. K. Gaison, J. P. Brodsky, Xin Qian, T. Classen, Dusan Sarenac, A. B. Telles, D. A. Martinez Caicedo, C. E. Lane, T. J. Langford, Christopher G. White, J. Ashenfelter, and Nathaniel Bowden
Subjects: Semileptonic decay, Physics, Fission, General Physics and Astronomy, chemistry.chemical_element, Inverse, Uranium, Enriched uranium, 01 natural sciences, 7. Clean energy, Nuclear physics, chemistry, 0103 physical sciences, 010306 general physics, Neutrino oscillation, Energy (signal processing), High Flux Isotope Reactor
Abstract: This Letter reports the first measurement of the ^{235}U ν[over ¯]_{e} energy spectrum by PROSPECT, the Precision Reactor Oscillation and Spectrum experiment, operating 7.9 m from the 85 MW_{th} highly enriched uranium (HEU) High Flux Isotope Reactor. With a surface-based, segmented detector, PROSPECT has observed 31678±304(stat) ν[over ¯]_{e}-induced inverse beta decays, the largest sample from HEU fission to date, 99% of which are attributed to ^{235}U. Despite broad agreement, comparison of the Huber ^{235}U model to the measured spectrum produces a χ^{2}/ndf=51.4/31, driven primarily by deviations in two localized energy regions. The measured ^{235}U spectrum shape is consistent with a deviation relative to prediction equal in size to that observed at low-enriched uranium power reactors in the ν[over ¯]_{e} energy region of 5-7 MeV.
Published: 2019
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15. The Radioactive Source Calibration System of the PROSPECT Reactor Antineutrino Detector

Author: R. Rosero, Denis E. Bergeron, T. J. Langford, R. L. Varner, R. D. McKeown, Chao Zhang, M. P. Mendenhall, J. Ashenfelter, M. V. Diwan, Xin Qian, Nathaniel Bowden, X. Lu, Aiwu Zhang, J. Wilhelmi, D. A. Martinez Caicedo, D. Norcini, J. T. Matta, A. B. Telles, Y-R Yen, G. Deichert, C. D. Bass, M. J. Dolinski, Hans P. Mumm, Jim Napolitano, C.E. Gilbert, J. P. Brodsky, D. C. Jones, J. Insler, A. B. Balantekin, O. Kyzylova, J. J. Cherwinka, R. Neilson, A. B. Hansell, K. M. Heeger, P. E. Mueller, B. Hackett, H. R. Band, B. T. Foust, S. Hans, C. E. Lane, X. Zhang, Dmitry A. Pushin, A. Galindo-Uribarri, B. R. Littlejohn, E. Romero-Romero, J. LaRosa, D. E. Jaffe, Minfang Yeh, S. Nour, P. T. Surukuchi, J. A. Nikkel, Anna Erickson, T. Wise, D. Berish, Christopher G. White, T. Classen, Dusan Sarenac, M. A. Tyra, Michael Febbraro, B. Viren, C. D. Bryan, A. J. Conant, J. K. Gaison, and D. J. Dean
Subjects: Physics, Nuclear and High Energy Physics, Photomultiplier, Physics - Instrumentation and Detectors, 010308 nuclear & particles physics, Physics::Instrumentation and Detectors, Radioactive source, Nuclear engineering, Detector, FOS: Physical sciences, Instrumentation and Detectors (physics.ins-det), Nuclear reactor, Oak Ridge National Laboratory, 7. Clean energy, 01 natural sciences, law.invention, Physics::Geophysics, law, Inverse beta decay, 0103 physical sciences, High Energy Physics::Experiment, Neutrino, 010306 general physics, Instrumentation, High Flux Isotope Reactor
Abstract: The Precision Reactor Oscillation and Spectrum (PROSPECT) Experiment is a reactor neutrino experiment designed to search for sterile neutrinos with a mass on the order of 1 eV/c$^2$ and to measure the spectrum of electron antineutrinos from a highly-enriched $^{235}$U nuclear reactor. The PROSPECT detector consists of an 11 by 14 array of optical segments in $^{6}$Li-loaded liquid scintillator at the High Flux Isotope Reactor in Oak Ridge National Laboratory. Antineutrino events are identified via inverse beta decay and read out by photomultiplier tubes located at the ends of each segment. The detector response is characterized using a radioactive source calibration system. This paper describes the design, operation, and performance of the PROSPECT source calibration system.
Published: 2019

16. Analysis of low birth weight first-born babies by geography and deprivation as an aid to policy and service targeting

Author: F. Donohue, H Johnson, R Mc Dermott, T. Haase, F Cianci, Catherine D. Darker, D McKeown, and G Sayers
Subjects: Adult, R software, medicine.medical_specialty, Birth weight, Health outcomes, Logistic regression, Child health, 03 medical and health sciences, 0302 clinical medicine, Risk Factors, medicine, Birth Weight, Humans, 030212 general & internal medicine, Child, Pregnancy, Geography, 030503 health policy & services, Public health, Infant, Newborn, Public Health, Environmental and Occupational Health, General Medicine, Infant, Low Birth Weight, medicine.disease, Low birth weight, Policy, Female, medicine.symptom, 0305 other medical science, Maternal Age, Demography
Abstract: BACKGROUND Low birth weight (LBW), which is defined as a birth weight of
Published: 2019
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17. Measurement of the Antineutrino Spectrum from ^{235}U Fission at HFIR with PROSPECT

Author: J, Ashenfelter, A B, Balantekin, H R, Band, C D, Bass, D E, Bergeron, D, Berish, N S, Bowden, J P, Brodsky, C D, Bryan, J J, Cherwinka, T, Classen, A J, Conant, A A, Cox, D, Davee, D, Dean, G, Deichert, M V, Diwan, M J, Dolinski, A, Erickson, M, Febbraro, B T, Foust, J K, Gaison, A, Galindo-Uribarri, C E, Gilbert, K E, Gilje, B T, Hackett, S, Hans, A B, Hansell, K M, Heeger, J, Insler, D E, Jaffe, X, Ji, D C, Jones, O, Kyzylova, C E, Lane, T J, Langford, J, LaRosa, B R, Littlejohn, X, Lu, D A, Martinez Caicedo, J T, Matta, R D, McKeown, M P, Mendenhall, J M, Minock, P E, Mueller, H P, Mumm, J, Napolitano, R, Neilson, J A, Nikkel, D, Norcini, S, Nour, D A, Pushin, X, Qian, E, Romero-Romero, R, Rosero, D, Sarenac, P T, Surukuchi, A B, Telles, M A, Tyra, R L, Varner, B, Viren, C, White, J, Wilhelmi, T, Wise, M, Yeh, Y-R, Yen, A, Zhang, C, Zhang, and X, Zhang
Abstract: This Letter reports the first measurement of the ^{235}U ν[over ¯]_{e} energy spectrum by PROSPECT, the Precision Reactor Oscillation and Spectrum experiment, operating 7.9 m from the 85 MW_{th} highly enriched uranium (HEU) High Flux Isotope Reactor. With a surface-based, segmented detector, PROSPECT has observed 31678±304(stat) ν[over ¯]_{e}-induced inverse beta decays, the largest sample from HEU fission to date, 99% of which are attributed to ^{235}U. Despite broad agreement, comparison of the Huber ^{235}U model to the measured spectrum produces a χ^{2}/ndf=51.4/31, driven primarily by deviations in two localized energy regions. The measured ^{235}U spectrum shape is consistent with a deviation relative to prediction equal in size to that observed at low-enriched uranium power reactors in the ν[over ¯]_{e} energy region of 5-7 MeV.
Published: 2019

18. Neonatal Bicycling Movements Associated With a Basal Ganglia Stroke

Author: Justin Graveline, Monica D. McKeown, Salini Thulasirajah, and Daniela Pohl
Subjects: medicine.medical_specialty, Physical medicine and rehabilitation, Neurology, business.industry, Basal ganglia, medicine, Neurology (clinical), Case Reports, medicine.disease, business, Stroke
Published: 2019

19. Losing touch: age-related changes in plantar skin sensitivity, lower limb cutaneous reflex strength, and postural stability in older adults

Author: Monica D. McKeown, Mark G. Carpenter, J. Timothy Inglis, and Ryan M. Peters
Subjects: Adult, Male, 0301 basic medicine, Aging, medicine.medical_specialty, Physiology, Electromyography, Vibration, Young Adult, 03 medical and health sciences, 0302 clinical medicine, Physical medicine and rehabilitation, Tibialis anterior muscle, Cutaneous receptor, Physical Stimulation, Skin Physiological Phenomena, Sensory threshold, Reflex, medicine, Postural Balance, Humans, Muscle, Skeletal, Aged, Balance (ability), Aged, 80 and over, medicine.diagnostic_test, business.industry, General Neuroscience, Posturography, Middle Aged, 030104 developmental biology, Lower Extremity, Touch, Sensory Thresholds, Call for Papers, Female, business, 030217 neurology & neurosurgery
Abstract: Age-related changes in the density, morphology, and physiology of plantar cutaneous receptors negatively impact the quality and quantity of balance-relevant information arising from the foot soles. Plantar perceptual sensitivity declines with age and may predict postural instability; however, alteration in lower limb cutaneous reflex strength may also explain greater instability in older adults and has yet to be investigated. We replicated the age-related decline in sensitivity by assessing monofilament and vibrotactile (30 and 250 Hz) detection thresholds near the first metatarsal head bilaterally in healthy young and older adults. We additionally applied continuous 30- and 250-Hz vibration to drive mechanically evoked reflex responses in the tibialis anterior muscle, measured via surface electromyography. To investigate potential relationships between plantar sensitivity, cutaneous reflex strength, and postural stability, we performed posturography in subjects during quiet standing without vision. Anteroposterior and mediolateral postural stability decreased with age, and increases in postural sway amplitude and frequency were significantly correlated with increases in plantar detection thresholds. With 30-Hz vibration, cutaneous reflexes were observed in 95% of young adults but in only 53% of older adults, and reflex gain, coherence, and cumulant density at 30 Hz were lower in older adults. Reflexes were not observed with 250-Hz vibration, suggesting this high-frequency cutaneous input is filtered out by motoneurons innervating tibialis anterior. Our findings have important implications for assessing the risk of balance impairment in older adults.
Published: 2016
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20. Plantar cutaneous function in Parkinson’s disease patients ON and OFF L-dopa

Author: Ryan M. Peters, J. Timothy Inglis, Martin J. McKeown, Elizabeth P. Pasman, Mark G. Carpenter, and Monica D. McKeown
Subjects: Male, 0301 basic medicine, Motor disorder, Levodopa, medicine.medical_specialty, Parkinson's disease, Population, Disease, Electromyography, Vibration, 03 medical and health sciences, Discrimination, Psychological, 0302 clinical medicine, Physical medicine and rehabilitation, Physical Stimulation, medicine, Humans, Muscle, Skeletal, education, Aged, education.field_of_study, Reflex, Abnormal, medicine.diagnostic_test, Foot, business.industry, General Neuroscience, Carbidopa, Parkinson Disease, Middle Aged, medicine.disease, Drug Combinations, 030104 developmental biology, Lower Extremity, Touch Perception, Touch, Reflex, Physical therapy, Female, business, 030217 neurology & neurosurgery, medicine.drug
Abstract: While Parkinson's disease (PD) is traditionally viewed as a motor disorder, there is mounting evidence that somatosensory function becomes affected as well. However, conflicting reports exist regarding whether plantar sensitivity is reduced in early-onset PD patients. Plantar sensitivity was assessed using monofilaments and a gold-standard, two-interval two-alternative forced choice vibrotactile detection task at both 30 and 250Hz. Lower-limb cutaneous reflexes were assessed by delivering continuous, sinusoidal vibration at 30 and 250Hz while recording muscle activity in Tibialis Anterior. We found no evidence of elevated plantar thresholds or dysfunctional lower-limb cutaneous reflexes in PD patients ON medication. We also found no acute effect of ceasing L-dopa intake on either plantar sensitivity or cutaneous reflexes. Our finding of intact cutaneous function in PD supports the further exploration of therapeutics that enhance plantar sensitivity to minimize postural instability, a source of considerable morbidity in this clinical population.
Published: 2016
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21. A New Era for Jefferson Lab

Author: R. D. McKeown, H. E. Montgomery, and M. R. Pennington
Subjects: Physics, Nuclear and High Energy Physics, Art history, Engineering physics
Abstract: On a cool Saturday morning in late April a seemingly endless stream of cars turned off Jefferson Avenue in Newport News, Virginia, bringing 12,000 people ages 1 to 91 to the Open House to learn more about “the new era in science” at the Thomas Jefferson National Accelerator Facility. The visitors were dazzled by the complex equipment, the enthusiastic staff, and the advanced technology at the Laboratory.
Published: 2016
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22. Measurement of the Electron Antineutrino Oscillation with 1958 Days of Operation at Daya Bay

Author: Hongzhao Yu, Hanxiong Huang, L. Kang, J. K. C. Leung, Yanchu Wang, Li Zhou, Alexander Olshevskiy, D. Cao, S. H. Kettell, Miao He, J. J. Ling, S. J. Patton, D. E. Jaffe, Christopher G. White, X. B. Ma, Xingtao Huang, M. Bishai, Jinjuan Ren, Y. L. Chan, H. R. Band, H. Liang, Yixue Chen, H. L. Zhuang, S. Kohn, E. T. Worcester, M. Ye, Wenxiao Wang, Haifeng Li, F. Z. Qi, Jen-Chieh Peng, L. S. Littenberg, Juan Pedro Ochoa-Ricoux, T. Wise, Maxim Gonchar, Yanping Huang, R. T. Lei, Y. C. Lin, W. R. Edwards, D. Taychenachev, R. A. Johnson, G. Hussain, X. L. Ji, V. Vorobel, Jianrun Hu, Patrick Huber, X. Wang, Qingmin Zhang, Jiawen Zhang, Quanyin Li, Yinhong Zhang, Minfang Yeh, Chang-Wei Loh, B. R. Littlejohn, Xiaolu Ji, D. M. Xia, H. Y. Wei, F. S. Deng, X. T. Zhang, Z. Guo, B. Roskovec, R. Zhang, L. Lebanowski, Y. Y. Ding, Shengxin Lin, Z. K. Cheng, Z. P. Zhang, Jianglai Liu, Bing-Lin Young, Xiaohui Qian, D. Adey, Jim Napolitano, J. Lee, Honghan Gong, Yaoyu Zhang, Yang Yang, D. A. Martinez Caicedo, S. Zeng, M. Dolgareva, Michael Kramer, L. Mora Lepin, Y. H. Chang, E. Naumova, D. A. Dwyer, K. T. McDonald, H. L. H. Wong, T. J. Langford, Guey-Lin Lin, Jonathan S. Lu, Baobiao Yue, X.F. Zhang, Xiao-yan Li, A. Higuera, Zhi-zhong Xing, C. H. Wang, H. M. Steiner, X. C. Ruan, Huijun Zhang, P. Zheng, Feiyang Zhang, Haijun Yang, L. Guo, R. G. Wang, M. Qi, W. J. Wu, Siew Cheng Wong, R. D. McKeown, Ye Chen, Chao Zhang, J. Park, Liang Zhan, Changjian Lin, Yang Heng, Jiaheng Zou, Mengsu Yang, Haonan Lu, Shanfeng Li, H. R. Pan, T. Hu, Xiaohu Guo, M. T. Yang, J. H. C. Lee, B. Z. Hu, F. Li, Yunzhe Liu, C. E. Tull, W. H. Tse, Christopher L. Marshall, J. F. Chang, W. Gu, Z. Y. Yu, D. C. Jones, Zhibing Li, Yufeng Li, J. M. Link, J. P. Cummings, A. B. Balantekin, Rupert Leitner, Changgen Yang, K. M. Heeger, K. L. Jen, Jing Wang, C. Lu, J. L. Xu, Wenju Huo, S. K. Lin, Y. Malyshkin, Liangjian Wen, Guofu Cao, Qinglong Wu, Kam Biu Luk, Chun S. J. Pun, Artem Chukanov, Lawrence Pinsky, Zhuojun Hu, Shaomin Chen, Jun Cao, J. L. Sun, S. F. Li, Tian Xue, Y. X. Zhang, Simon Blyth, Dmitry V. Naumov, M. Z. Wang, Ming Chung Chu, C. Li, Richard Rosero, W. Tang, N. Y. Wang, B. Viren, L. H. Wei, Z. M. Wang, Yanhui Ma, K. Whisnant, J. Cheng, Yanlin Liu, Wei Li, Zhijian Zhang, K. Treskov, Zhiyong Zhang, F. P. An, C. C. Zhang, Hucheng Chen, V. Pec, S. Hans, R. W. Hackenburg, Z. Wang, Guanghua Gong, J. J. Cherwinka, N. Raper, L. W. Koerner, Yicheng Guo, Y. B. Hsiung, M. V. Diwan, R. M. Qiu, X. Q. Li, Lin Yang, Jinmei Liu, Jing Zhao, S. Li, X. Y. Ma, and I. Mitchell
Subjects: Physics, Physics - Instrumentation and Detectors, 010308 nuclear & particles physics, Oscillation, hep-ex, Daya bay, General Physics and Astronomy, Inverse, FOS: Physical sciences, Daya Bay Reactor Neutrino Experiment, Instrumentation and Detectors (physics.ins-det), 01 natural sciences, Spectral line, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), 0103 physical sciences, 010306 general physics, Electron neutrino, physics.ins-det, Energy (signal processing)
Abstract: We report a measurement of electron antineutrino oscillation from the Daya Bay Reactor Neutrino Experiment with nearly 4 million reactor $\overline{\nu}_{e}$ inverse beta decay candidates observed over 1958 days of data collection. The installation of a Flash-ADC readout system and a special calibration campaign using different source enclosures reduce uncertainties in the absolute energy calibration to less than 0.5% for visible energies larger than 2 MeV. The uncertainty in the cosmogenic $^9$Li and $^8$He background is reduced from 45% to 30% in the near detectors. A detailed investigation of the spent nuclear fuel history improves its uncertainty from 100% to 30%. Analysis of the relative $\overline{\nu}_{e}$ rates and energy spectra among detectors yields $\sin^{2}2\theta_{13} = 0.0856\pm 0.0029$ and $\Delta m^2_{32}=(2.471^{+0.068}_{-0.070})\times 10^{-3}~\mathrm{eV}^2$ assuming the normal hierarchy, and $\Delta m^2_{32}=-(2.575^{+0.068}_{-0.070})\times 10^{-3}~\mathrm{eV}^2$ assuming the inverted hierarchy., Comment: 6 pages, 4 figures, and 1 table. v4: the published version
Published: 2018

23. Seasonal variation of the underground cosmic muon flux observed at Daya Bay

Author: T. J. Langford, K. V. Tsang, H. M. Steiner, Y. Q. Ma, Artem Chukanov, Lawrence Pinsky, Michael Kramer, J. J. Cherwinka, Patrick Huber, S. J. Patton, W. Q. Gu, X. T. Zhang, Qinglong Wu, S. H. Kettell, X. B. Ma, Shengxin Lin, A. Khan, Tian Xue, W. J. Wu, Chang-Wei Loh, R. D. McKeown, Xiaohu Guo, Richard Rosero, L. Lebanowski, H. L. Zhuang, Y. K. Heng, Y. Y. Ding, M. Ye, T. Wise, J. F. Chang, M. Qi, Alexander Olshevskiy, M. T. Yang, Maxim Gonchar, D. C. Jones, D. Taychenachev, S. Hans, Changgen Yang, K. Whisnant, J. Cheng, E. T. Worcester, Y. Xu, E. C. Huang, A. B. Balantekin, G. Hussain, Y. Nakajima, H. S. Chen, C. Li, W. Tang, K. K. Kwan, Y. L. Chan, F. Z. Qi, Chun S. J. Pun, R. A. Johnson, M. W. Kwok, N. Y. Wang, C. Lu, B. Viren, J. J. Ling, Shaomin Chen, Jun Cao, N. Viaux, J. L. Xu, X. L. Ji, Christopher G. White, B. Z. Hu, Xin Qian, Jiawen Zhang, H. H. Zhang, Minfang Yeh, J. B. Jiao, Vit Vorobel, S. F. Li, W. R. Edwards, Guisen Li, Honghan Gong, Rupert Leitner, Zhijian Zhang, Z. Guo, Dmitry V. Naumov, H. R. Band, C. H. Wang, R. T. Lei, Hanxiong Huang, L. Kang, Xingtao Huang, Yang Yang, Y. C. Lin, B. Roskovec, Xiao-yan Li, K. Treskov, Wei Li, A. Higuera, S. Zeng, J. Park, Jen-Chieh Peng, Siew Cheng Wong, L. H. Whitehead, Zhi-zhong Xing, Z. Y. Yu, X. Wang, Li Zhou, H. Y. Wei, F. P. An, Wenju Huo, Yicheng Guo, K. T. McDonald, Haoqi Lu, H. Liang, Yixue Chen, Jiaheng Zou, Jinjuan Ren, D. A. Martinez Caicedo, M. Bishai, J. H. C. Lee, Haijun Yang, Q. J. Li, Dejun Li, Y. F. Wang, Yi Chen, Y. B. Hsiung, Shanfeng Li, Bing-Lin Young, J. Dove, B. R. Littlejohn, Wei Wang, C. C. Zhang, C. H. Wu, M. V. Diwan, L. S. Littenberg, R. M. Qiu, X. Q. Li, T. Kwok, Guey-Lin Lin, R. W. Hackenburg, R. G. Wang, Z. Wang, Simon Blyth, M. Z. Wang, Ming Chung Chu, Yufeng Li, K. L. Jen, N. Raper, Jonathan S. Lu, Z. Ye, Liang Zhan, Marco Grassi, Miao He, Y. X. Zhang, X. C. Ruan, Kam-Biu Luk, S. K. Lin, L. Guo, Y. H. Chang, F. Li, H. R. Pan, D. M. Xia, Chao Zhang, Z. B. Li, Zhiyong Zhang, S. Jetter, Y. Malyshkin, J. L. Sun, Lin Yang, Z. M. Wang, Jinmei Liu, C. Sebastiani, Liangjian Wen, Jing Zhao, X. Y. Ma, Guofu Cao, I. Mitchell, Jianglai Liu, S. Kohn, D. Cao, Guanghua Gong, C. E. Tull, Z. K. Cheng, Z. P. Zhang, D. E. Jaffe, Chi Lin, Juan Pedro Ochoa-Ricoux, Qingmin Zhang, Q. Y. Chen, Jim Napolitano, Y. M. Zhang, J. M. Link, J. P. Cummings, J. Lee, M. Dolgareva, H. L. H. Wong, Kwong Lau, K. M. Heeger, V. Pec, X. P. Ji, Mengsu Yang, J. K. Xia, T. Hu, H. Y. Ngai, R. L. Gill, E. Naumova, and D. A. Dwyer
Subjects: Physics - Instrumentation and Detectors, Correlation coefficient, Physics::Instrumentation and Detectors, cosmic ray experiments, neutrino detectors, neutrino experiments, Flux, FOS: Physical sciences, Atmospheric sciences, 01 natural sciences, High Energy Physics - Experiment, High Energy Physics - Experiment (hep-ex), 0103 physical sciences, medicine, 010306 general physics, Physics, COSMIC cancer database, Muon, 010308 nuclear & particles physics, Astronomy and Astrophysics, Instrumentation and Detectors (physics.ins-det), Seasonality, Atmospheric temperature, medicine.disease, Overburden, Neutrino detector, High Energy Physics::Experiment
Abstract: The Daya Bay Experiment consists of eight identically designed detectors located in three underground experimental halls named as EH1, EH2, EH3, with 250, 265 and 860 meters of water equivalent vertical overburden, respectively. Cosmic muon events have been recorded over a two-year period. The underground muon rate is observed to be positively correlated with the effective atmospheric temperature and to follow a seasonal modulation pattern. The correlation coefficient $\alpha$, describing how a variation in the muon rate relates to a variation in the effective atmospheric temperature, is found to be $\alpha_{\text{EH1}} = 0.362\pm0.031$, $\alpha_{\text{EH2}} = 0.433\pm0.038$ and $\alpha_{\text{EH3}} = 0.641\pm0.057$ for each experimental hall., Comment: Updated to be identical to the published version
Published: 2018

24. Performance of a segmented $^{6}$Li-loaded liquid scintillator detector for the PROSPECT experiment

Author: Dmitry A. Pushin, M. A. Tyra, C. E. Lane, J. P. Brodsky, R. Rosero, Minfang Yeh, Denis E. Bergeron, T. J. Langford, Chao Zhang, M. P. Mendenhall, R. D. McKeown, A. B. Hansell, H. R. Band, S. Nour, Anna Erickson, J. Ashenfelter, D. Norcini, J. J. Cherwinka, T. Wise, D. Berish, K. Gilje, Hans P. Mumm, J. Wilhelmi, Christopher G. White, T. Classen, P. E. Mueller, M. V. Diwan, B. T. Foust, R. Neilson, D. Davee, Nathaniel Bowden, D. A. Martinez Caicedo, F. Lopez, B. Hackett, K. M. Heeger, Y-R Yen, Ke Han, Jim Napolitano, A. Galindo-Uribarri, B. R. Littlejohn, A. Bykadorova Telles, J. T. Matta, D. C. Jones, J. Insler, A. B. Balantekin, E. Romero-Romero, O. Kyzylova, S. Hans, P. T. Surukuchi, X. Zhang, K. Commeford, G. Deichert, D. E. Jaffe, Aiwu Zhang, J. A. Nikkel, C. D. Bass, M. J. Dolinski, J. M. Wagner, A. J. Conant, J. K. Gaison, B. Heffron, Xin Qian, C. Trinh, J. LaRosa, C. D. Bryan, and J. M. Minock
Subjects: Scintillation, Materials science, Physics - Instrumentation and Detectors, 010308 nuclear & particles physics, business.industry, Physics::Instrumentation and Detectors, Detector, Attenuation length, FOS: Physical sciences, Instrumentation and Detectors (physics.ins-det), Scintillator, 01 natural sciences, 7. Clean energy, High Energy Physics - Experiment, Neutron capture, High Energy Physics - Experiment (hep-ex), Optics, Recoil, Neutrino detector, 0103 physical sciences, Neutron detection, 010306 general physics, business, Instrumentation, Mathematical Physics
Abstract: This paper describes the design and performance of a 50 liter, two-segment $^{6}$Li-loaded liquid scintillator detector that was designed and operated as prototype for the PROSPECT (Precision Reactor Oscillation and Spectrum) Experiment. The two-segment detector was constructed according to the design specifications of the experiment. It features low-mass optical separators, an integrated source and optical calibration system, and materials that are compatible with the $^{6}$Li-doped scintillator developed by PROSPECT. We demonstrate a high light collection of 850$\pm$20 PE/MeV, an energy resolution of $\sigma$ = 4.0$\pm$0.2% at 1 MeV, and efficient pulse-shape discrimination of low $dE/dx$ (electronic recoil) and high $dE/dx$ (nuclear recoil) energy depositions. An effective scintillation attenuation length of 85$\pm$3 cm is measured in each segment. The 0.1% by mass concentration of $^{6}$Li in the scintillator results in a measured neutron capture time of $\tau$ = 42.8$\pm$0.2 $\mu s$. The long-term stability of the scintillator is also discussed. The detector response meets the criteria necessary for achieving the PROSPECT physics goals and demonstrates features that may find application in fast neutron detection., Comment: 16 pages, 13 figures; minor edits to design detail and references
Published: 2018
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25. First search for short-baseline neutrino oscillations at HFIR with PROSPECT

Author: R. Neilson, Lindsey J. Bignell, D. E. Jaffe, J. A. Nikkel, J. J. Cherwinka, K. Gilje, C. E. Gilbert, D. Davee, R. L. Varner, A. Galindo-Uribarri, B. R. Littlejohn, Minfang Yeh, D. A. Martinez Caicedo, K. Koehler, C. D. Bryan, D. C. Jones, J. Insler, B. Heffron, H. R. Band, C. D. Bass, M. J. Dolinski, A. B. Hansell, A. B. Balantekin, O. Kyzylova, D. Norcini, A. Bykadorova Telles, R. Sharma, J. LaRosa, J. M. Wagner, C. E. Lane, B. T. Foust, C. Baldenegro, Xin Lu, G. Deichert, P. T. Surukuchi, D. J. Dean, H. Yao, Dusan Sarenac, Michael Febbraro, Ke Han, J. P. Brodsky, R. Rosero, J. Wilhelmi, Andrew A. Cox, M. V. Diwan, Jim Napolitano, Denis E. Bergeron, B. Viren, B. R. White, Aiwu Zhang, Hans P. Mumm, J. Bricco, R. D. McKeown, Chao Zhang, K. Commeford, M. P. Mendenhall, Christopher G. White, Wei Wang, J. T. Matta, T. Classen, F. Lopez, K. M. Heeger, X. Zhang, H. J. Miller, T. J. Langford, J. Ashenfelter, X. Ji, Nathaniel Bowden, S. Hans, B. Seilhan, Dmitry A. Pushin, Xin Qian, S. Nour, Anna Erickson, T. Wise, D. Berish, M. A. Tyra, P. E. Mueller, Y-R Yen, A. Glenn, B. T. Hackett, J. K. Gaison, M. Zhao, E. Romero-Romero, A. J. Conant, J. M. Minock, B. W. Goddard, and C. Trinh
Subjects: Physics, Fission products, Sterile neutrino, 010308 nuclear & particles physics, Fission, Oscillation, General Physics and Astronomy, FOS: Physical sciences, Scintillator, 01 natural sciences, High Energy Physics - Experiment, Physics::Geophysics, Nuclear physics, High Energy Physics - Experiment (hep-ex), Inverse beta decay, 0103 physical sciences, High Energy Physics::Experiment, Physics::Chemical Physics, 010306 general physics, Neutrino oscillation, High Flux Isotope Reactor
Abstract: This Letter reports the first scientific results from the observation of antineutrinos emitted by fission products of $^{235}$U at the High Flux Isotope Reactor. PROSPECT, the Precision Reactor Oscillation and Spectrum Experiment, consists of a segmented 4 ton $^6$Li-doped liquid scintillator detector covering a baseline range of 7-9 m from the reactor and operating under less than 1 meter water equivalent overburden. Data collected during 33 live-days of reactor operation at a nominal power of 85 MW yields a detection of 25461 $\pm$ 283 (stat.) inverse beta decays. Observation of reactor antineutrinos can be achieved in PROSPECT at 5$\sigma$ statistical significance within two hours of on-surface reactor-on data-taking. A reactor-model independent analysis of the inverse beta decay prompt energy spectrum as a function of baseline constrains significant portions of the previously allowed sterile neutrino oscillation parameter space at 95% confidence level and disfavors the best fit of the Reactor Antineutrino Anomaly at 2.2$\sigma$ confidence level., Comment: 7 pages, 5 figures; v3: Added additional supplemental files
Published: 2018
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26. The PROSPECT Reactor Antineutrino Experiment

Author: J. J. Cherwinka, Aiwu Zhang, K. Gilje, G. Deichert, C. Baldenegro, A. Galindo-Uribarri, B. R. Littlejohn, R. Sharma, P. T. Surukuchi, Wei Wang, E. Romero-Romero, D. Norcini, R. L. Varner, K. Commeford, B. Hackett, C. E. Lane, M. Zhao, Minfang Yeh, H. R. Band, A. B. Hansell, D. A. Martinez Caicedo, A. J. Conant, X. Lu, M. V. Diwan, J. M. Minock, B. T. Foust, J. Boyle, Christopher G. White, S. Nour, T. Classen, Anna Erickson, R. Rosero, B. W. Goddard, J. T. Matta, J. K. Gaison, C.E. Gilbert, H. J. Miller, A. Bykadorova Telles, T. Wise, T. J. Langford, D. Berish, Y-R Yen, Denis E. Bergeron, R. Neilson, D. J. Dean, A. Glenn, Michael Febbraro, J. Ashenfelter, R. D. McKeown, B. Viren, Lindsey J. Bignell, Jim Napolitano, J. Bricco, J. P. Brodsky, P. E. Mueller, D. E. Jaffe, M. A. Tyra, X. Ji, Nathaniel Bowden, X. Zhang, J. A. Nikkel, Ke Han, Chao Zhang, H. Yao, C. Trinh, M. P. Mendenhall, C. D. Bryan, K. Koehler, Hans P. Mumm, F. Lopez, D. C. Jones, J. Insler, K. M. Heeger, A. B. Balantekin, O. Kyzylova, Andrew A. Cox, B. R. White, D. Davee, Dusan Sarenac, J. LaRosa, C. D. Bass, M. J. Dolinski, B. Heffron, J. M. Wagner, Xin Qian, J. Wilhelmi, B. Seilhan, Dmitry A. Pushin, and S. Hans
Subjects: Physics, Nuclear and High Energy Physics, Sterile neutrino, Physics - Instrumentation and Detectors, 010308 nuclear & particles physics, Oscillation, Physics::Instrumentation and Detectors, Detector, High Energy Physics::Phenomenology, FOS: Physical sciences, Instrumentation and Detectors (physics.ins-det), Parameter space, Scintillator, 01 natural sciences, 7. Clean energy, Physics::Geophysics, Nuclear physics, Inverse beta decay, 0103 physical sciences, High Energy Physics::Experiment, 010306 general physics, Neutrino oscillation, Instrumentation, High Flux Isotope Reactor
Abstract: The Precision Reactor Oscillation and Spectrum Experiment, PROSPECT, is designed to make both a precise measurement of the antineutrino spectrum from a highly-enriched uranium reactor and to probe eV-scale sterile neutrinos by searching for neutrino oscillations over meter-long baselines. PROSPECT utilizes a segmented $^6$Li-doped liquid scintillator detector for both efficient detection of reactor antineutrinos through the inverse beta decay reaction and excellent background discrimination. PROSPECT is a movable 4-ton antineutrino detector covering distances of 7m to 13m from the High Flux Isotope Reactor core. It will probe the best-fit point of the $\bar\nu_e$ disappearance experiments at 4$\sigma$ in 1 year and the favored regions of the sterile neutrino parameter space at more than 3$\sigma$ in 3 years. PROSPECT will test the origin of spectral deviations observed in recent $\theta_{13}$ experiments, search for sterile neutrinos, and address the hypothesis of sterile neutrinos as an explanation of the reactor anomaly. This paper describes the design, construction, and commissioning of PROSPECT and reports first data characterizing the performance of the PROSPECT antineutrino detector., Comment: 30 pages, 33 figures; updated with journal revision and reference
Published: 2018
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27. Neutron calibration sources in the Daya Bay experiment

Author: R. H. M. Tsang, D. A. Dwyer, Guisen Li, Xin Qian, Chao Zhang, W. Q. Gu, Jianglai Liu, F. F. Wu, R. D. McKeown, and R. Carr
Subjects: Physics, Nuclear and High Energy Physics, Physics - Instrumentation and Detectors, Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, Daya bay, Detector, FOS: Physical sciences, Instrumentation and Detectors (physics.ins-det), Design characteristics, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), Calibration, Neutron source, High Energy Physics::Experiment, Neutron, Instrumentation
Abstract: We describe the design and construction of the low rate neutron calibration sources used in the Daya Bay Reactor Anti-neutrino Experiment. Such sources are free of correlated gamma-neutron emission, which is essential in minimizing induced background in the anti-neutrino detector. The design characteristics have been validated in the Daya Bay anti-neutrino detector., 13 pages, 7 figures
Published: 2015
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28. A compact ultra-clean system for deploying radioactive sources inside the KamLAND detector

Author: T. I. Banks, B. E. Berger, M. Batygov, D. A. Dwyer, K. Ueshima, Hideki Watanabe, Y. Gando, M. Sakai, H. M. Steiner, Hitoshi Murayama, G. A. Horton-Smith, Kunio Inoue, J. A. Detwiler, C. Grant, A. Piepke, A. Suzuki, J. Wallig, T. Mitsui, J. Maricic, Ke Han, Stuart J. Freedman, B. D. Xu, K. Nakamura, Hidetomo Yoshida, K. M. Heeger, Yu. Efremenko, Sanshiro Enomoto, H. Ikeda, T. Miletic, M. P. Decowski, K. Tamae, J. Shirai, Werner Tornow, T. Bloxham, B. K. Fujikawa, K. E. Downum, I. Shimizu, Yasuhiro Kishimoto, S. Yoshida, Giorgio Gratta, R. D. McKeown, Chao Zhang, C. E. Lane, John G. Learned, Lindley Winslow, S. Matsuno, N. Ybarrolaza, G. Keefer, Hugon J Karwowski, D. M. Markoff, A. Kozlov, T. O'Donnell, Koichi Ichimura, O. Perevozchikov, Y. Takemoto, M. Koga, A. Gando, and Astroparticle Physics (IHEF, IoP, FNWI)
Subjects: Physics, Nuclear and High Energy Physics, Physics - Instrumentation and Detectors, business.industry, Physics::Instrumentation and Detectors, Detector, FOS: Physical sciences, Wire rope, Instrumentation and Detectors (physics.ins-det), engineering.material, Scintillator, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), Intrusion, Optics, Neutrino detector, Glovebox, Nitrogen gas, engineering, Calibration, Nuclear Experiment (nucl-ex), business, Instrumentation, Nuclear Experiment
Abstract: We describe a compact, ultra-clean device used to deploy radioactive sources along the vertical axis of the KamLAND liquid-scintillator neutrino detector for purposes of calibration. The device worked by paying out and reeling in precise lengths of a hanging, small-gauge wire rope (cable); an assortment of interchangeable radioactive sources could be attached to a weight at the end of the cable. All components exposed to the radiopure liquid scintillator were made of chemically compatible UHV-cleaned materials, primarily stainless steel, in order to avoid contaminating or degrading the scintillator. To prevent radon intrusion, the apparatus was enclosed in a hermetically sealed housing inside a glove box, and both volumes were regularly flushed with purified nitrogen gas. An infrared camera attached to the side of the housing permitted real-time visual monitoring of the cable's motion, and the system was controlled via a graphical user interface., Revised author affiliations, corrected typos, made minor improvements to text, and revised references
Published: 2015

29. Laboratory studies on the removal of radon-born lead from KamLAND׳s organic liquid scintillator

Author: R. D. McKeown, Hiroshi Ogawa, M. P. Decowski, Yuri Kamyshkov, D. McKee, G. Keefer, T. Miletic, Stuart J. Freedman, J. Maricic, Osamu Tajima, Z. Djurcic, K. Tamae, John G. Learned, C. E. Lane, Kunio Inoue, S. Yoshida, D. A. Dwyer, K. Tolich, Y. Takemoto, B. E. Berger, Kyo Nakajima, J. S. Ricol, M. Ogawa, B. K. Fujikawa, M. Motoki, H. Ikeda, T. Iwamoto, Yasuhiro Kishimoto, Giorgio Gratta, K. Nakajima, Lindley Winslow, K. M. Heeger, Yu. Efremenko, Sakae Takeuchi, I. Shimizu, Chao Zhang, S. Matsuno, M. Koga, Koichi Ichimura, C. Grant, Y. Koseki, S. Hatakeyama, A. Kozlov, C. Mauger, Sanshiro Enomoto, Leon Hsu, K. Furuno, Y. Kibe, Hugon J Karwowski, J. Shirai, S. Dazeley, T. Ebihara, George K. Schweitzer, J. A. Detwiler, A. Piepke, A. Suzuki, R. Svoboda, T. O׳Donnell, T. Mitsui, Hideki Watanabe, Y. Gando, D. M. Markoff, A. Gando, Hiroko Watanabe, F. Suekane, K. Nakamura, F. Piquemal, Werner Tornow, and GRAPPA (ITFA, IoP, FNWI)
Subjects: Physics, Nuclear and High Energy Physics, Physics - Instrumentation and Detectors, Physics::Instrumentation and Detectors, Radiochemistry, Radon Decay Products, FOS: Physical sciences, chemistry.chemical_element, Radon, Instrumentation and Detectors (physics.ins-det), Scintillator, High Energy Physics - Experiment, respiratory tract diseases, law.invention, 85-05, Nuclear physics, High Energy Physics - Experiment (hep-ex), chemistry, law, Extraction methods, Nuclear Experiment (nucl-ex), Nuclear Experiment, Instrumentation, Distillation
Abstract: The removal of radioactivity from liquid scintillator has been studied in preparation of a low background phase of KamLAND. This paper describes the methods and techniques developed to measure and efficiently extract radon decay products from liquid scintillator. We report the radio-isotope reduction factors obtained when applying various extraction methods. During this study, distillation was identified as the most efficient method for removing radon-born lead from liquid scintillator.
Published: 2015
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30. Improved measurement of the reactor antineutrino flux and spectrum at Daya Bay

Author: P. Jaffke, Y. K. Hor, L. Guo, H. H. Zhang, J. Lee, F. Li, Chao Zhang, S. Zeng, M. Dolgareva, Jen-Chieh Peng, C. Li, H. L. H. Wong, Y. X. Zhang, Marco Grassi, Miao He, J. Dove, J. P. Cummings, S. H. Kettell, X. B. Ma, J. J. Cherwinka, Z. M. Wang, S. J. Patton, W. Q. Gu, X. P. Ji, X. C. Ruan, J. B. Jiao, J. Joshi, Z. Guo, Michael Kramer, Chun S. J. Pun, Hanxiong Huang, L. Kang, Yi-Fang Zhao, Maxim Gonchar, K. M. Heeger, W. Tang, H. L. Zhuang, M. V. Diwan, Haosheng Chen, Shaomin Chen, Jun Cao, Rupert Leitner, K. T. McDonald, J. M. Link, S. K. Lin, R. A. Johnson, N. Y. Wang, M. Qi, Vit Vorobel, S. F. Li, C. H. Wu, W. J. Wu, Changgen Yang, Changjian Lin, B. Viren, Richard Rosero, R. D. McKeown, J. K. Xia, Jiawen Zhang, Yanchu Wang, Y. Malyshkin, Dmitry V. Naumov, R. T. Lei, H. R. Band, D. C. Jones, Wei Li, A. B. Balantekin, Kwong Lau, X. L. Ji, C. Lu, J. L. Xu, H. Y. Ngai, R. L. Gill, Meng Wang, H. Liang, Yixue Chen, G. X. Sun, N. Viaux, Liangjian Wen, Y. C. Lin, Guofu Cao, H. Y. Wei, T. Hu, Y. L. Chan, Mengsu Yang, Bing-Lin Young, Haijun Yang, X. Wang, M. Mooney, W. R. Cen, Xingtao Huang, D. W. Liu, Minfang Yeh, T. Kwok, M. Bishai, Qinglong Wu, Kam Biu Luk, D. M. Xia, Zhiyong Zhang, Haoqi Lu, Dejun Li, Guey-Lin Lin, Y. Nakajima, Jonathan S. Lu, Z. Ye, H. R. Pan, L. S. Littenberg, L. H. Whitehead, Yi Chen, Chunjie Wang, N. Raper, Tian Xue, J. H. Cheng, M. W. Kwok, E. Naumova, D. A. Dwyer, B. Roskovec, Zhi Ning, Y. Chang, Q. J. Li, Xiaohu Guo, M. T. Yang, Chang-Wei Loh, Xuefeng Ding, T. J. Langford, Y. K. Heng, Mengyun Guan, K. V. Tsang, Yufeng Li, K. L. Jen, Li Zhou, B. R. Littlejohn, C. E. Tull, Shanfeng Li, H. M. Steiner, L. Lebanowski, Y. Y. Ding, Z. K. Cheng, D. Cao, Y. Q. Ma, Z. P. Zhang, Zhijian Zhang, M. Ye, K. Whisnant, J. Cheng, Artem Chukanov, Juan Pedro Ochoa-Ricoux, Nan Zhou, Zhibing Li, K. Treskov, D. Taychenachev, Alexander Olshevskiy, Lawrence Pinsky, K. K. Kwan, G. Hussain, R. P. Guo, Y. Xu, E. C. Huang, Yaping Cheng, Qingmin Zhang, V. Pec, J. J. Ling, Q. W. Zhao, Q. Y. Chen, S. Hans, B. Z. Hu, Guisen Li, Jim Napolitano, Li Chang, W. L. Zhong, F. P. An, Honghan Gong, Qingming Ma, Siew Cheng Wong, W. R. Edwards, Y. B. Hsiung, Ran Han, Jiaheng Zou, Lin Yang, Jinmei Liu, Jing Zhao, X. Y. Ma, J. Y. Xu, I. Mitchell, S. Jetter, Wenju Huo, Simon Blyth, Ming Chung Chu, W. Hu, Zeyuan Yu, Xin Qian, S. Kohn, Xiao-yan Li, A. Higuera, Zhi-zhong Xing, Ziyan Deng, Jianglai Liu, Jinjuan Ren, W. H. Wang, R. W. Hackenburg, Z. Wang, Guanghua Gong, Y. M. Zhang, D. E. Jaffe, T. Wise, Patrick Huber, J. F. Chang, X. T. Zhang, Shengxin Lin, D. A. Martinez Caicedo, J. L. Sun, R. G. Wang, J. Park, J. H. C. Lee, Liang Zhan, E. T. Worcester, Z. Lv, F. Z. Qi, J. de Arcos, and Christopher G. White
Subjects: Nuclear and High Energy Physics, Physics - Instrumentation and Detectors, Daya bay, energy spectrum, Flux, FOS: Physical sciences, Daya Bay Reactor Neutrino Experiment, antineutrino flux, Daya Bay, reactor, 01 natural sciences, High Energy Physics - Experiment, Positron energy, Physics::Geophysics, Nuclear physics, High Energy Physics - Experiment (hep-ex), 0103 physical sciences, Energy spectrum, Nuclear Experiment (nucl-ex), 010306 general physics, Nuclear Experiment, Instrumentation, Physics, 010308 nuclear & particles physics, Astronomy and Astrophysics, Instrumentation and Detectors (physics.ins-det), Inverse beta decay, High Energy Physics::Experiment
Abstract: 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$_{\mathrm{th}}$ nuclear reactors and detected by eight antineutrino detectors deployed in two near (560~m and 600~m flux-weighted baselines) and one far (1640~m flux-weighted baseline) underground experimental halls. With 621 days of data, more than 1.2 million inverse beta decay (IBD) candidates were detected. The IBD yield in the eight detectors was measured, and the ratio of measured to predicted flux was found to be $0.946\pm0.020$ ($0.992\pm0.021$) for the Huber+Mueller (ILL+Vogel) model. A 2.9~$\sigma$ deviation was found in the measured IBD positron energy spectrum compared to the predictions. In particular, an excess of events in the region of 4-6~MeV was found in the measured spectrum, with a local significance of 4.4~$\sigma$. A reactor antineutrino spectrum weighted by the IBD cross section is extracted for model-independent predictions., Comment: version published in Chinese Physics C
Published: 2017

31. Results from the Daya Bay Reactor Neutrino Experiment

Author: Y. X. Zhang, Y. H. Tam, S. H. Zhang, D. M. Xia, Yue Meng, Q. J. Li, Kam-Biu Luk, Haoqi Lu, Y. F. Wang, L. E. Piilonen, C. Chasman, N. Tagg, H. K. Tanaka, Qinglong Wu, Miao He, S. Jetter, K. Shih, Jinjuan Ren, J. F. Chang, K. V. Tsang, Yi Wei, J. J. Ling, P. Hinrichs, Tian Xue, R. H.M. Tsang, Kirk T. McDonald, Huo Yan Chen, M. Qi, S. R. Ely, Y. K. Heng, J. Lee, W. C. Lai, C. Lu, J. L. Xu, M. Bishai, A. G. Olshevski, H. L. H. Wong, Hanxiong Huang, L. Kang, H. S. Chen, Q. W. Zhao, H. R. Band, W. R. Edwards, X. C. Chen, Yaolin Zhao, Jianbin Xu, L. S. Littenberg, L. Y. Wang, L. S. Pinsky, R. W. Hackenburg, S. D. Fang, N. Y. Wang, B. Viren, Z. Wang, Yan Zhang, H. Y. Ngai, R. L. Gill, L. S. Wang, J. B. Jiao, M. Ye, Igor Nemchenok, Zhijian Zhang, L. Zheng, D. M. Webber, L. H. Whitehead, B. B. Shao, Zhi Ning, J. K. C. Leung, F. H. Zhang, Yi Chen, Q. He, Juan Pedro Ochoa-Ricoux, A. B. Balantekin, Guisen Li, Honghan Gong, S. K. Lin, Chun S. J. Pun, X. L. Ji, H. Themann, R. T. Lei, H. Liang, Yixue Chen, S. J. Chen, Ziyan Deng, Mengyun Guan, Zhongyuan Zhou, Guanghua Gong, Jianglai Liu, B. R. Littlejohn, W. K. Ngai, B. Z. Hu, S. H. Kettell, Chi Lin, Shaomin Chen, Jun Cao, X. B. Ma, Rupert Leitner, Y. Xu, C. A. Lewis, Bing-Lin Young, D. E. Jaffe, J. J. Cherwinka, M. Z. Wang, Ming Chung Chu, Xiao Tang, Xin Qian, Y. H. Chang, Y. A. Gornushkin, K. Whisnant, Kwong Lau, Xurong Chen, J. Y. Fu, T. Wise, Jiaheng Zou, L. Lebanowski, Y. Y. Ding, D. A. Dwyer, Li Zhou, Kwok Yin Leung, G. X. Sun, L. Z. Wang, C. E. Tull, R. L. Hahn, X. T. Huang, C. G. Yang, M. C. McFarlane, Zhi-zhong Xing, H. Z. Huang, X. F. Du, Y. K. Hor, Richard Rosero, S. Trentalange, D. Mohapatra, Maxim Gonchar, Ching-Yao Lai, Xiaoyuan Chen, K. K. Kwan, H. M. Steiner, Xinglong Li, Dmitry V. Naumov, S. J. Patton, W. Q. Gu, V. Pec, Y. Q. Ma, Chao Zhang, R. A. Johnson, R. L. Brown, Fengpeng An, S. Hans, Wai Ting Chan, Jonathan M. Link, H. L. Zhuang, R. Carr, Jiawen Zhang, W. L. Zhong, Qiumei Ma, Vit Vorobel, Z. Isvan, J. P. Cummings, Wei Li, Y. S. Yeh, M. W. Kwok, Yagmur Torun, H. Y. Wei, S. Blyth, Y. B. Nie, Zhiyong Zhang, L. Q. Ge, Zai-Wei Fu, T. Kwok, Guey-Lin Lin, Y. C. Zhang, F. Li, Liangjian Wen, Z. M. Wang, Xuan Wang, E. Draeger, Guofu Cao, Yufeng Li, K. M. Heeger, Y. Williamson, Z. P. Zhang, Y. B. Liu, H. J. Jiang, Minfang Yeh, J. Z. Bai, Q. An, B. Roskovec, Wing-Hon Lai, X. B. Li, T. Hu, W. Beriguete, Jen-Chieh Peng, J. B. Xi, Michael Kramer, R. D. McKeown, E. T. Worcester, F. Z. Qi, R. G. Wang, Liang Zhan, A. Luk, X. H. Guo, C. H. Wang, X. P. Ji, J. L. Sun, Christopher G. White, N. Raper, Y. C. Tung, Patrick Huber, X. C. Ruan, D. W. Liu, Vadim Issakov, Y. Nakajima, Y. C. Lin, Z. Y. Yu, Qingmin Zhang, Jim Napolitano, M. V. Diwan, X. Q. Li, Hao Hao, Z. B. Li, Lin Yang, O. D. Tsai, Jinmei Liu, Jing Zhao, X. Y. Ma, W. Wang, Y. B. Hsiung, and F. F. Wu
Subjects: Nuclear physics, Physics, Nuclear and High Energy Physics, Particle physics, Solar neutrino, Daya bay, Daya Bay Reactor Neutrino Experiment, Solar neutrino problem, Neutrino oscillation, Atomic and Molecular Physics, and Optics
Abstract: The Daya Bay Reactor Neutrino Experiment was designed to achieve a sensitivity on the value of sin^2 2θ_(13) to better than 0.01 at 90% CL. The experiment consists of eight antineutrino detectors installed underground at different baselines from six nuclear reactors. With data collected with six antineutrino detectors for 55 days, Daya Bay announced the discovery of a non-zero value for sin^2 2θ_(13) with a significance of 5.2 standard deviations in March 2012. The most recent analysis with 139 days of data acquired in a six-detector configuration yields sin^2 2θ_(13) = 0.089 ± 0.010 (stat.) ± 0.005 (syst.), which is the most precise measurement of sin^2 2θ_(13) to date.
Published: 2014
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32. A low mass optical grid for the PROSPECT reactor antineutrino detector

Author: M. V. Diwan, J. J. Cherwinka, Hans P. Mumm, K. Gilje, D. Norcini, Michael Febbraro, B. Viren, J. T. Matta, D. E. Jaffe, K. M. Heeger, Y-R Yen, J. A. Nikkel, A. B. Hansell, K. H. Hermanek, X. Lu, T. J. Langford, D. Davee, J. Wilhelmi, D. C. Jones, J. Insler, A.E. Detweiler, J. Ashenfelter, Dmitry A. Pushin, A. J. Conant, A. B. Balantekin, D. A. Martinez Caicedo, O. Kyzylova, H. R. Band, E. Romero-Romero, C. D. Bass, B. T. Foust, M. J. Dolinski, Nathaniel Bowden, C.E. Gilbert, Minfang Yeh, P. E. Mueller, M. A. Tyra, D. J. Dean, C. E. Lane, R. Rosero, J. M. Minock, Xin Qian, Denis E. Bergeron, G. Deichert, R. L. Varner, R. D. McKeown, J. P. Brodsky, Chao Zhang, M. P. Mendenhall, S. Hans, R. Neilson, S. Nour, Anna Erickson, J. LaRosa, T. Wise, D. Berish, Y. Gebre, Jim Napolitano, Aiwu Zhang, A. Galindo-Uribarri, B. R. Littlejohn, P. T. Surukuchi, X. Zhang, B. Hackett, Dusan Sarenac, Ian Gustafson, Christopher G. White, T. Classen, J. K. Gaison, and C. D. Bryan
Subjects: Physics, Physics - Instrumentation and Detectors, Optics, business.industry, Detector, FOS: Physical sciences, Instrumentation and Detectors (physics.ins-det), business, Low Mass, Grid, Instrumentation, Mathematical Physics
Abstract: PROSPECT, the Precision Reactor Oscillation and SPECTrum experiment, is a short-baseline reactor antineutrino experiment designed to provide precision measurements of the $^{235}$U product $\overline{\nu}_e$ spectrum of utilizing an optically segmented 4-ton liquid scintillator detector. PROSPECT's segmentation system, the optical grid, plays a central role in reconstructing the position and energy of $\overline{\nu}_e$ interactions in the detector. This paper is the technical reference for this PROSPECT subsystem, describing its design, fabrication, quality assurance, transportation and assembly in detail. In addition, the dimensional, optical and mechanical characterizations of optical grid components and the assembled PROSPECT target are also presented. The technical information and characterizations detailed here will inform geometry-related inputs for PROSPECT physics analysis, and can guide a variety of future particle detection development efforts, such as those using optically reflecting materials or filament-based 3D printing., Comment: 31 pages, 28 figures
Published: 2019
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33. Lithium-loaded liquid scintillator production for the PROSPECT experiment

Author: R. L. Varner, X. Lu, M. V. Diwan, P. E. Mueller, B. Hackett, J. LaRosa, R. Neilson, D. A. Martinez Caicedo, A. J. Conant, A. B. Hansell, D. Davee, Aiwu Zhang, Lindsey J. Bignell, J. T. Matta, X. Zhang, J. J. Cherwinka, B. T. Foust, D. E. Jaffe, A. Galindo-Uribarri, B. R. Littlejohn, P. T. Surukuchi, Y-R Yen, G. Deichert, J. A. Nikkel, Dmitry A. Pushin, J. Wilhelmi, C. Camilo Reyes, T. J. Langford, Christopher G. White, C. D. Bryan, T. Classen, J. Ashenfelter, H. R. Band, Michael Febbraro, S. Campos, B. Hayes, J. K. Gaison, B. Viren, Nathaniel Bowden, M. A. Tyra, Dusan Sarenac, R. Diaz Perez, Xin Qian, C.E. Gilbert, S. Nour, Anna Erickson, T. Wise, D. Berish, C. D. Bass, M. J. Dolinski, S. Hans, J. P. Brodsky, R. Rosero, Denis E. Bergeron, R. D. McKeown, E. Romero-Romero, Minfang Yeh, D. Norcini, Hans P. Mumm, D. J. Dean, K. M. Heeger, Jim Napolitano, D. C. Jones, J. Insler, A. B. Balantekin, O. Kyzylova, C. E. Lane, Chao Zhang, and M. P. Mendenhall
Subjects: Optical absorbance, Physics - Instrumentation and Detectors, Materials science, Fabrication, 010308 nuclear & particles physics, Analytical chemistry, FOS: Physical sciences, chemistry.chemical_element, Instrumentation and Detectors (physics.ins-det), Scintillator, 7. Clean energy, 01 natural sciences, Photon yield, 030218 nuclear medicine & medical imaging, 03 medical and health sciences, 0302 clinical medicine, chemistry, Yield (chemistry), 0103 physical sciences, Lithium, Instrumentation, Mass fraction, Mathematical Physics
Abstract: This work reports the production and characterization of lithium-loaded liquid scintillator (LiLS) for the Precision Reactor Oscillation and Spectrum Experiment (PROSPECT). Fifty-nine 90 liter batches of LiLS (${}^6{\rm Li}$ mass fraction 0.082%$\pm$0.001%) were produced and samples from all batches were characterized by measuring their optical absorbance relative to air, light yield relative to a pure liquid scintillator reference, and pulse shape discrimination capability. Fifty-seven batches passed the quality assurance criteria and were used for the PROSPECT experiment., 16 pages, 15 figures
Published: 2019
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34. Limits on Active to Sterile Neutrino Oscillations from Disappearance Searches in the MINOS, Daya Bay, and Bugey-3 Experiments

Author: Rakesh Sharma, S. Childress, Wenju Huo, H. H. Zhang, D. Cao, A. Schreckenberger, N. Graf, C. D. Moore, R. Gran, Carlos Escobar, Simon Blyth, R. K. Plunkett, X. L. Ji, S. Moed Sher, Haosheng Chen, M. Z. Wang, Ming Chung Chu, D. Torretta, W. Hu, G. J. Bock, J. M. Link, N. Poonthottathil, Jen-Chieh Peng, J. K. Xia, J. Lee, R. W. Hackenburg, S. Zeng, X. Qiu, M. Dolgareva, Carl White, Z. Wang, J. Dove, Chun S. J. Pun, C. M. Castromonte, J. Joshi, J. P. Cummings, M. M. Medeiros, Michael Kramer, L. Corwin, W. J. Wu, R. D. McKeown, P. Sail, Shaomin Chen, Jun Cao, Xuefeng Ding, Z. K. Cheng, Z. P. Zhang, H. L. H. Wong, Y. X. Zhang, X. P. Ji, J. Hartnell, P. Lucas, Hanxiong Huang, S. C. Tognini, Rupert Leitner, M. Qi, Changjian Lin, Gregory J Pawloski, J. Park, L. Kang, J. K. C. Leung, Li Zhou, R. Mehdiyev, K. L. Jen, S. H. Kettell, Yaping Cheng, T. Hu, X. B. Ma, R. B. Patterson, Zhijian Zhang, T. Wise, A. B. Balantekin, S. F. Li, C. Li, Lin Yang, S. R. Mishra, C. James, Yanchu Wang, C. Rosenfeld, X. T. Zhang, M. Mooney, Vit Vorobel, K. Treskov, Dmitry V. Naumov, M. Orchanian, H. Y. Ngai, R. L. Gill, Marco Grassi, Miao He, A. E. Kreymer, D. D. Phan, N. Viaux, S. R. Hahn, Kwong Lau, P. Schreiner, Y. L. Chan, R. Toner, B. Z. Hu, R. Hatcher, D. Cronin-Hennessy, G. X. Sun, B. Rebel, H. A. Rubin, S. K. Lin, J. H. C. Lee, T. Kafka, Jinmei Liu, Jing Zhao, Alec Habig, K. Grzelak, Z. Isvan, L. Mualem, X. Y. Ma, J. Y. Xu, Wei Li, W. A. Mann, F. P. An, T. J. Carroll, P. Adamson, Yanfeng Zhang, S. J. Patton, W. Q. Gu, Y. C. Lin, Mengsu Yang, H. R. Gallagher, Maxim Gonchar, D. W. Liu, Minfang Yeh, Y. Malyshkin, A. Perch, A. Radovic, J. Schneps, I. Mitchell, Harvey B Newman, W. Tang, S. M. S. Kasahara, Marvin L Marshak, X. Wang, P. Gouffon, Liangjian Wen, S. De Rijck, R. A. Johnson, A. Holin, Guofu Cao, Guanghua Gong, X. Tian, Alexander Olshevskiy, M. Bishai, K. T. McDonald, S. Jetter, Haoqi Lu, Dejun Li, W. Flanagan, Wei Wang, B. Roskovec, Jiawen Zhang, Zengcai V. Guo, Y. K. Hor, L. Guo, J. Cheng, Chao Zhang, Jianglai Liu, E. T. Worcester, Z. Lv, F. Z. Qi, H. L. Zhuang, E. Falk, Haijun Yang, J. de Arcos, J. Urheim, Guisen Li, J. J. Cherwinka, G. M. Irwin, Zhiyong Zhang, Honghan Gong, Z. Y. Deng, C. E. Tull, N. Y. Wang, Jinjuan Ren, B. Viren, J. H. Cheng, G. J. Feldman, L. S. Littenberg, C. H. Wu, Zhi Ning, I. Anghel, M. A. Thomson, D. Naples, Stanley G. Wojcicki, Li Chang, Y. Xu, E. C. Huang, Karol Lang, Q. W. Zhao, F. Li, B. R. Littlejohn, H. Y. Wei, Yi-Fang Zhao, G. Koizumi, Qingming Ma, V. Pec, R. L. Talaga, J. J. Ling, Yufeng Li, J. O'Connor, J. Hylen, Y. B. Hsiung, R. J. Nichol, W. L. Zhong, M. C. Goodman, M. V. Frohne, T. Kwok, N. Tagg, N. Mayer, J. B. Jiao, R. A. Gomes, M. C. Sanchez, M. V. Diwan, Guey-Lin Lin, Jonathan S. Lu, Z. Ye, R. B. Pahlka, Qinglong Wu, G.D. Barr, Junwei Huang, Leigh H. Whitehead, Kam Biu Luk, Chunjie Wang, M. Y. Gabrielyan, Siew Cheng Wong, Tian Xue, W. R. Cen, R. T. Lei, K. M. Heeger, J. R. Meier, Xin Qian, Juergen Thomas, Y. K. Heng, Z. M. Wang, Q. J. Li, S. V. Cao, J. A. Nowak, Ran Han, Jiaheng Zou, S. Hans, Mengyun Guan, J. A. Musser, Xiao-yan Li, A. Higuera, X. T. Huang, J. M. Paley, K. Whisnant, Zhi-zhong Xing, Joao A B Coelho, Juan Pedro Ochoa-Ricoux, H. R. Band, K. V. Tsang, H. Liang, Yixue Chen, M. Kordosky, Andrew Blake, J. L. Sun, Artem Chukanov, Lawrence Pinsky, A. Timmons, N. Raper, Richard Rosero, J. F. Chang, Changgen Yang, C. Lu, J. L. Xu, L. H. Whitehead, Ning Zhou, Y. Chang, Shanfeng Li, J. J. Evans, M. M. Pfützner, D. E. Jaffe, Y. Nakajima, Yi Chen, R. C. Webb, M. W. Kwok, L. Lebanowski, Y. Y. Ding, D. M. Xia, J. K. De Jong, S. Phan-Budd, A. Sousa, K. K. Kwan, N. E. Devenish, P. J. Litchfield, R. P. Guo, G. Tzanakos, C. L. McGivern, S. Kohn, S. Germani, Warner A. Miller, A. V. Devan, Bing-Lin Young, D. Bogert, A. Aurisano, W. R. Edwards, E. Naumova, D. A. Dwyer, T. J. Langford, H. M. Steiner, P. Vahle, Y. Q. Ma, Patrick Huber, Shengxin Lin, D. A. Martinez Caicedo, J. K. Nelson, R. G. Wang, D. A. Jensen, Liang Zhan, M. D. Messier, A. C. Weber, X. C. Ruan, Qingmin Zhang, Q. Y. Chen, Jim Napolitano, Xiaohu Guo, M. T. Yang, Hao Pan, C. W. Loh, Z. Y. Yu, Zhibing Li, M. Ye, D. Taychenachev, G. Hussain, J. Todd, P. Jaffke, and R. Chen
Subjects: Physics, Particle physics, Sterile neutrino, Liquid Scintillator Neutrino Detector, 010308 nuclear & particles physics, Physics::Instrumentation and Detectors, High Energy Physics::Phenomenology, General Physics and Astronomy, FOS: Physical sciences, 01 natural sciences, High Energy Physics - Experiment, Nuclear physics, MiniBooNE, High Energy Physics - Experiment (hep-ex), MINOS, 0103 physical sciences, Measurements of neutrino speed, High Energy Physics::Experiment, Neutrino, 010306 general physics, Neutrino oscillation, Electron neutrino, QC
Abstract: Searches for a light sterile neutrino have been performed independently by the MINOS and the Daya Bay experiments using the muon (anti)neutrino and electron antineutrino disappearance channels, respectively. In this Letter, results from both experiments are combined with those from the Bugey-3 reactor neutrino experiment to constrain oscillations into light sterile neutrinos. The three experiments are sensitive to complementary regions of parameter space, enabling the combined analysis to probe regions allowed by the LSND and MiniBooNE experiments in a minimally extended four-neutrino flavor framework. Stringent limits on $\sin^2 2\theta_{\mu e}$ are set over 6 orders of magnitude in the sterile mass-squared splitting $\Delta m^2_{41}$. The sterile-neutrino mixing phase space allowed by the LSND and MiniBooNE experiments is excluded for $\Delta m^2_{41} < 0.8$ eV$^2$ at 95% CL$_s$., Comment: 8 pages, 4 figures, published in Physical Review Letters. Data release found at http://www-numi.fnal.gov/PublicInfo/forscientists.html and at https://wiki.bnl.gov/dayabay/index.php?title=Daya_Bay%27s_Sterile_Neutrino_Results_in_2016
Published: 2016
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35. Long-Baseline Neutrino Facility (LBNF) and Deep Underground Neutrino Experiment (DUNE): Conceptual Design Report. Volume 4: The DUNE Detectors at LBNF

Author: M. Headley, V. Singh, L. L. Kormos, E. Hazen, A. Kumar, R. K. Plunkett, Christopher L. Marshall, R. Schmitt, E. Blaufuss, Amanpreet Kaur, C. Vignoli, David Malon, P vanGemmeren, A. Heavey, S. L. Mufson, J. Cushing, S. R. Elliott, A. deGouvea, F. Pietropaolo, T. Hasegawa, V. Papadimitriou, Roberto L. N. Oliveira, D. Waters, D. Ruterbories, A. Topkar, W. Honey, T. Yang, Marvin Johnson, Mingshui Chen, Carl H. Albright, M. Muether, S. Rescia, John F. Beacom, J. Johnstone, M.D.L. Lopes, A. Verdugo, L.S. Rochester, Y. Ng, Xiaohui Qian, B. Page, B. Rebel, Steven Gardiner, P. DeLurgio, Ernesto Kemp, D. Wells, C. Grant, D. Warner, D. Aristizabal, S. Bansal, T. L. Usher, Germano Guedes, D. Duchesneau, M. C. Sanchez, L. Camilleri, Joshua R. Klein, D.W. Schmitz, R. VanBerg, H. L. H. Wong, B. Viren, Mario Campanelli, J. L. Stone, B. Lundberg, O. Palamara, A. Laminack, D. Lissauer, Francesco Tortorici, M. A. Acero, T. Tope, D. Cianci, David H. Adams, C. Yanagisawa, J. Lowery, Ranjan Dharmapalan, J. Mousseau, W. R. Kropp, A. Perch, J. Moon, C. Palomares, R. Andrews, J. Hartnell, N. Kazaryan, Kendall Mahn, V. Bellini, Pomita Ghoshal, M. Adamowski, D. Girardelli, Bindu A. Bambah, Y. Nakajima, A. N. Khotjantsev, D. Reitzner, D. Smargianaki, B. Eberly, T. Liu, S. Glavin, J. Asaadi, G. d. Geronimo, M. B. Smy, M. Baird, Z. Moss, Gustaaf Brooijmans, Alessandro Menegolli, R. B. Patterson, J. A. J. Matthews, M. Weber, Dmitry Gorbunov, M. Tzanov, R. L. Talaga, S.K. Mandal, C. Greenley, G. W. Sullivan, Dimitar Mladenov, Anjan K. Giri, T. Boone, E. James, L. Fields, T. A. Bolton, S. A. Dytman, R. Rucinski, Alexander Mann, Gabriel Perdue, S. Bolognesi, B. Szczerbinska, F. Bay, R. D. McKeown, C. Lane, S. Chembra, Shu Li, Sangeeta Malhotra, D. Garcia-Gamez, R. L. Gill, B. Wang, J. Spitz, B. T. Fleming, E. McCluskey, Timothy M. Shaw, T. Patzak, S. Horikawa, Z. Pavlovic, E. Pantic, H. M. O'Keeffe, J. Anderson, A. Friedland, J. P. Lopez, R. Raboanary, P. Schlabach, J. Strait, T. A. Forest, M. D. Messier, R. Potenza, Narendra Sahu, A. M. McGowan, R. Santorelli, B. V. K. S. Potukuchi, C. Montanari, W.M. Lee, M. Toups, M. Kordosky, D. Mertins, Matthew Wetstein, Wenzhao Wei, S. Kohn, T. J. Haines, Jasvinder A. Singh, G. Introzzi, D. Naples, Kazuhiro Terao, Q. Liu, M. Potekhin, Stanley G. Wojcicki, E. Arrieta-Diaz, J. Davies, P. Novella, Andrew Blake, A. L. Renshaw, M. O. Wascko, J. Insler, Jason Kumar, C. Jen, L. Wang, G. Koizumi, M. M. Khabibullin, E. Amador, T. Grundy, Yu. Onishchuk, B. Mitrica, T. Hamernik, D. Wenman, Gianluca Petrillo, V. J. Guarino, N. McCauley, A. Tonazzo, D. J. Taylor, A. B. Balantekin, T. Nicholls, S. Jiménez, William A. Barletta, B. Zamorano, R. Saakyan, J. R. Macier, S. B. Boyd, T. Xin, J. Bremer, M. J. Wilking, M. E. Convery, R. Gran, N. Pruthi, K. J. Anderson, Enrique Calvo, Peter Wittich, Artur F. Izmaylov, J. Hylen, C. Touramanis, G. A. Valdiviesso, Irina Mocioiu, Katsuya Yonehara, C. M. Sutera, Kenneth Long, T. E. Coan, D. Autiero, H. K. Hadavand, S. Menary, J. M. Paley, Antonio Ereditato, C. Rubbia, T. Olson, O. G. Miranda, A. G. Cocco, Gary Drake, J.A. Sepulveda-Quiroz, A. Guglielmi, T. Lundin, S. Fuess, Mary S. Richardson, S. Emery, J. M. Link, Jingbo Ye, N. Yershov, H. S. Chen, Davit Mayilyan, Christian Farnese, T. Loew, M. Bansal, T. R. Junk, Y. A. Ramachers, Akitaka Ariga, Marvin L Marshak, G. Karagiorgi, Sarah Catherine Eno, William J. Marciano, Philip D Adamson, R. Vandewater, Kevin Scott McFarland, M. Torti, M. Tortola, M. Antonello, Leonidas Kalousis, S. Shahsavarani, N. Simos, S. Mandodi, B. J. P. Jones, Rob Edgecock, R. Haenni, G. Meng, H. Pessard, O. Mena, J. Dolph, L. Suter, N. Graf, Abraham D. Falcone, T. Gamble, B. Bourguille, L. Greenler, Francesco Lanni, Zulkifli Ahmad, L. A. Corwin, D. Stefan, M. V. Diwan, Joseph Lykken, E. Niner, J. K. Nelson, P. Novakova, Paulo Rodrigues, E. Blucher, L. Whitehead, S. Ventura, C. Y. Chi, I. Gil-Botella, B. Carls, Valentina Greco, N. P. Samios, M. Elnimr, B. Sands, R. Milincic, C. A. Moura, M. Newcomer, Kirk T. McDonald, J. Reichenbacher, K. Mavrokoridis, F. d. M. Blaszczyk, J. L. Raaf, Paolo Crivelli, A. Sousa, M. Mehrian, Olga Beltramello, H. Wang, K. Riesselmann, M. Nunes, M. Bergevin, M. Bass, Yu. G. Kudenko, J. H. Jo, Robert McTaggart, Georg G. Raffelt, E. Tziaferi, A. Holin, L. Valerio, A. Scaramelli, A. D. Marino, C. Rudolphvonrohr, V.M. Gehman, S. Santana, C. Mariani, K. Lande, S. Tariq, S. M. Fernandes, S. J. Brice, Gregory J Pawloski, Carlos Escobar, J. D. Perkin, S. R. Das, B. K. Fujikawa, G. T. Garvey, Sukalyan Chattopadhyay, H. Jostlein, V.B. Chandratre, M. Bonesini, J. d. Anjos, Matthew L Strait, M. C. Tamsett, J.V. Dawson, Giovanni Bellettini, G.D. Barr, Kam Biu Luk, S. Manly, M. Wallbank, Jack Fried, S. Childress, T. Miao, E. Berman, R. W. Hackenburg, H. Duyang, Cerian F Jackson, B. Baibussinov, T. K. Warburton, R. Petti, Jan T. Sobczyk, Vipin Bhatnagar, A. Aurisano, Marzio Nessi, H. Greenlee, I. Singh, H. Meyer, Michael Benjamin Andrews, A. Schukraft, A. A. Machado, Q. Z. Li, B. Norris, R. Guenette, K. Biery, Z. Li, Magdalena Malek, A. Cervera-Villanueva, M. S. Athar, P. N. Ratoff, Dongming Mei, Subrata Pal, A. Bashyal, Andrew Brandt, T. Kutter, A. Hackenburg, V. Aushev, Jorge G. Morfin, R. Tsenov, R. Kriske, Sergey A. Kulagin, Rudolf Oldeman, B. Kirby, André Rubbia, B. Paulos, D. Goeldi, C. E. Thorn, G. Varner, C. Ghag, J. Shahi, B. Kayser, C. Adams, S. H. Kettell, G. Brunetti, C. Densham, F. Noto, G. Mahler, M. Avila, J. Felde, P. Przewlocki, Matthew Mewes, D. Mcnulty, S. Adhikari, J. Osta, J. A. Nowak, R. M. Brown, Davide Sgalaberna, D. M. Asner, William Morse, Jan Conrad, G. P. Zeller, W. Sippach, C. D. Moore, D. Wahl, Nitish Dhingra, J. Willhite, T.V. Vieira, C. Taylor, W. E. Sondheim, Andrea Zani, J. Maricic, Anatoly Kopylov, Alec Habig, G. H. Collin, D. A. Dwyer, F. Mammoliti, J. K. Dejong, D. M. Lee, J. Park, L. Zang, L. Falk, N.V. Mokhov, C. E. Tull, K. Soustruznik, J. Howell, Xinhua Bai, X. Luo, Y. Karyotakis, K. Vaziri, D. Whittington, J. J. Back, C. Regenfus, Chao Zhang, H. Schellman, M. Fitton, A. Hahn, H. M. Steiner, N. S. Lockyer, H. R. Gallagher, M. Ross-Lonergan, B. P. Roe, L. S. Littenberg, Robert Wilson, C. S. Mishra, M. Rossella, M. Tripathi, S. Matsuno, A. Delbart, Xingguo Li, X. Bu, P. Vahle, G. A. Horton-Smith, A. Kostelecky, M. Hogan, S. Stoica, D. A. Harris, S. Murphy, Michael Thorpe, S. DiLuise, A. J. Finch, R. A. Johnson, G.L. Raselli, J. Huston, Stephen J. Parke, M. P. Decowski, D. Ioanisyan, S. Galymov, C. Mauger, L. Chaussard, P. Benetti, R. Sulej, S. Bertolucci, H. S. Budd, Rex Tayloe, F. Cavanna, N. J. Buchanan, X. Tian, Paolo Calafiura, A. Zalewska, G. B. Mills, Z. Parsa, B. Bleakley, Federico Sanchez, T. Vrba, H. Mendez, H. G. Berns, Lokesh Kumar, P. Mehta, M. Graham, Antonio Palazzo, F. Boffelli, S. Grullon, B. R. Littlejohn, I. Tropin, Michele Cascella, T. Viant, P. Ballett, N. Walsh, N. McConkey, S. J. Patton, E. Church, Michael Mooney, F.R. Torres, D. Cline, R. Imlay, I. Rakhno, T. Kobilarcik, Rukmani Mohanta, E.D. Zimmerman, E. Guardincerri, C. Vilela, M. Vagins, T. Wang, J. M. Yu, Animesh Chatterjee, G. Brown, E. Gramelini, Andre Petukhov, S. Magill, M. Groh, Martin Auger, L. Mualem, Artur M. Ankowski, J. Zalesak, J. G. Learned, E. Segreto, F. Jediny, Sarah Mancina, Niki Saoulidou, D. E. Jaffe, D. Edmunds, John Evans, E. Tatar, Utku Kose, Daniel A. Dale, David Martinez, John Ramsey, J. Urheim, Akhil Jhingan, W. Metcalf, Z. Djurcic, E. Mazzucato, K. Aryal, Maury Goodman, N. J. C. Spooner, O. V. Mineev, M. Bishai, R. Gandhi, James Stewart, S. R. Seibert, Joshua J. Turner, Parminder Kaur, J. Schwehr, D. Montanari, A. Rappoldi, T. Wachala, J. S. Díaz, Keith Rielage, J. Martín-Albo, J.J. Gómez-Cadenas, E.L. Snider, B. Russell, K. Grzelak, M. A. Leiguideoliveira, Amir Farbin, V. Paolone, J. Schneps, C. K. Jung, K. Yarritu, A. Higuera, Y. T. Tsai, Yang Li, R. Zwaska, Z. Vallari, Simon Lin, Pedro Cunha de Holanda, D. Karasavvas, Eric Endress, S. Hays, Paul Wilson, M. Luethi, E. Calligarich, Kuan Ken Lee, K. Chen, Sandip Pakvasa, K. Wood, N. Poudyal, L. F. Thompson, Asher Kaboth, L. Sexton-Kennedy, S. Lockwitz, G. Sinev, S. Hans, R. Musser, B. Bugg, Paola Sala, L. Bartoszek, S. Golapinni, B. Bhuyan, P. Hurh, W. H. Miller, O.B. Rodrigues, C. Bromberg, Brajesh C Choudhary, M. A. Thomson, R. Carr, J. Libo, M. Diamantopoulou, J. Bian, Yasaman Farzan, R. Roser, J. G. Boissevain, Caroline Morris, A. Gendotti, A. Himmel, J. Cranshaw, M. Zito, Bo Yu, S. Pordes, Thorsten Lux, I. M. Anghel, C. M. Castromonte, P. deJong, N. Solomey, R. Shrock, S. Bordoni, W. Fox, J. M. LoSecco, M. Khandaker, T. Kafka, M. H. Shaevitz, N. Barros, C. Booth, M. Rosen, Silvia Pascoli, M. Soderberg, Subhasmita Mishra, R. A. Gomes, Serhan Tufanli, B. Bhandari, D. Gibin, M. Stancari, F. Sergiampietri, Hye Young Lee, Gavin Davies, Michael DuVernois, V. Bocean, J. A. Musser, E. Pennacchio, Z. J. Liptak, K. Nikolics, R. J. Nichol, E. Kearns, P. Snopok, M. Sorel, Rohit Sharma, Sau Lan Wu, K. V. Tsang, Kaushik De, Timothyblake Watson, Y. Uchida, C. Mossey, R.A. Rameika, R. Svoboda, Gus Sinnis, Veljko Radeka, Y. Meng, E. Guarnaccia, Rebecca Bernstein, W. C. Louis, D. Navas, T. Blackburn, M. D. Haigh, Sandhya Choubey, A. Mefodiev, K. M. Heeger, R. Acciarri, Siqi Yang, Tomoko Ariga, Karol Lang, D. Cherdack, S.C. Timm, Milos Lokajicek, Minfang Yeh, Stephen T. Dye, G. Zavala, J. C. Thomas, M. Gold, C. McGrew, G. Vasseur, M. Thiesse, G. Diazbautista, K. Iwamoto, A. M. Szelc, Gareth J. Barker, I. Stancu, I. Shyrma, C. Andreopoulos, P. Shanahan, A. Bercellie, R. Corey, G.V. Velev, E. Catano-Mur, J. Fowler, S. J. M. Peeters, José W. F. Valle, B. Howard, Thomas Strauss, P. Lebrun, A. Radovic, A. Weinstein, Ara Ioannisian, H. T. Rakotondramanana, A. Curioni, R. W. Kadel, M. Borysova, Kate Scholberg, T. Ovsjannikova, S. Kemboi, J. Navarro, L. Periale, I. Kreslo, V. A. Kudryavtsev, D. R. Tiedt, G. Kumar, A. White, T. Handler, M. Worcester, A. Aranda-Fernandez, L. Rakotondravohitra, A. C. Weber, O. Prokofiev, J. Marteau, Max Robinson, C. Cantini, D. Pushka, N. Grant, H. Sobel, L. Favilli, J. Hewes, Srubabati Goswami, S.U. Shankar, D. Cronin-Hennessy, B. Baller, B. R. Behera, M. H. Kirby, T. Alion, D. Brailsford, S. Striganov, Laura Paulucci, C. D. Christofferson, B. Morgan, Y. Sun, A. Remoto, A. Hatzikoutelis, J. A. B. Coelho, A. Marchionni, P. Cole, Yuri Kamyshkov, Julián Félix, F. Varanini, John Marshall, R. Sharma, T. Hill, A. M. Gago, J. Heise, Lindley Winslow, R. Hatcher, G. Christodoulou, T. Davenne, Angela Fava, C. W. James, J. Joshi, S. Centro, H. Merritt, Paul Keener, Karol Hennessy, S. Söldner-Rembold, G. Santucci, C. S. Lin, E. T. Worcester, Michael Kramer, and J. Stock
Subjects: Nuclear physics, Physics, Conceptual design, Neutrino detector, 010308 nuclear & particles physics, 0103 physical sciences, Deep Underground Neutrino Experiment, Neutrino, 010306 general physics, Baseline (configuration management), 01 natural sciences
Published: 2016
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36. Improved Search for a Light Sterile Neutrino with the Full Configuration of the Daya Bay Experiment

Author: W. Tang, Hanxiong Huang, L. Kang, J. K. C. Leung, Simon Blyth, M. Z. Wang, Ming Chung Chu, N. Y. Wang, Jiawen Zhang, B. Viren, W. Hu, Jen-Chieh Peng, Yanchu Wang, Vit Vorobel, Guisen Li, Wei Li, J. J. Cherwinka, J. Dove, X. C. Ruan, J. P. Cummings, Honghan Gong, D. Cao, H. Y. Wei, Zhijian Zhang, Qingming Ma, M. Qi, C. Li, Kwong Lau, Qinglong Wu, Kam Biu Luk, K. Treskov, Bing-Lin Young, Y. K. Hor, Siew Cheng Wong, K. T. McDonald, G. X. Sun, Tian Xue, Guanghua Gong, D. A. Martinez Caicedo, Ning Zhou, L. Guo, Ran Han, Jiaheng Zou, J. Cheng, Michael Kramer, Mengsu Yang, Zhiyong Zhang, Y. K. Heng, F. P. An, S. Hans, Mengyun Guan, L. Lebanowski, Y. Y. Ding, Y. M. Zhang, F. Li, T. Kwok, Chao Zhang, Guey-Lin Lin, M. Ye, S. J. Patton, W. Q. Gu, Jonathan S. Lu, Dongmei Xia, C. H. Wu, D. E. Jaffe, Li Chang, Z. Ye, Yi-Fang Zhao, W. J. Wu, R. D. McKeown, Richard Rosero, Ziyan Deng, K. K. Kwan, K. Whisnant, R. G. Wang, Jianglai Liu, D. Taychenachev, T. Wise, Chunjie Wang, Qingmin Zhang, Y. B. Hsiung, G. Hussain, R. P. Guo, H. L. Zhuang, Xin Qian, Q. Y. Chen, Liang Zhan, B. Z. Hu, M. V. Diwan, P. Jaffke, J. L. Sun, Alexander Olshevskiy, Z. K. Cheng, Z. P. Zhang, Jim Napolitano, Y. Nakajima, Xiao-yan Li, A. Higuera, Haosheng Chen, Juan Pedro Ochoa-Ricoux, E. T. Worcester, Z. Lv, Y. Xu, Zhi-zhong Xing, E. C. Huang, F. Z. Qi, S. H. Kettell, M. W. Kwok, X. B. Ma, Jinjuan Ren, Xiaohu Guo, M. T. Yang, H. H. Zhang, X. L. Ji, J. M. Link, J. de Arcos, Marco Grassi, J. J. Ling, Miao He, W. R. Cen, W. R. Edwards, H. R. Pan, K. V. Tsang, Xingtao Huang, Q. W. Zhao, Yi Chen, E. Naumova, D. A. Dwyer, Q. J. Li, C. W. Loh, M. Bishai, Artem Chukanov, T. J. Langford, K. L. Jen, V. Pec, Yaping Cheng, Lin Yang, J. Joshi, R. W. Hackenburg, Maxim Gonchar, Z. Y. Yu, L. S. Littenberg, Lawrence Pinsky, J. B. Jiao, Z. Wang, H. M. Steiner, Y. Q. Ma, C. E. Tull, J. Park, Jinmei Liu, Rupert Leitner, Jing Zhao, Zhibing Li, X. Y. Ma, J. Y. Xu, Christopher G. White, Zhi Ning, Xuefeng Ding, S. Kohn, S. Jetter, W. L. Zhong, Li Zhou, I. Mitchell, R. A. Johnson, J. H. C. Lee, R. T. Lei, J. Lee, H. R. Band, K. M. Heeger, Y. L. Chan, H. Liang, Yixue Chen, A. B. Balantekin, S. K. Lin, Wei Wang, S. Zeng, M. Dolgareva, H. L. H. Wong, Y. X. Zhang, N. Raper, Y. Malyshkin, D. W. Liu, Liangjian Wen, Guofu Cao, Zengcai V. Guo, X. P. Ji, Minfang Yeh, B. Roskovec, Patrick Huber, X. T. Zhang, H. Y. Ngai, R. L. Gill, N. Viaux, J. K. Xia, T. Hu, Shengxin Lin, Changjian Lin, Haijun Yang, L. H. Whitehead, Yufeng Li, M. Mooney, Y. Chang, Chun S. J. Pun, Shaomin Chen, Jun Cao, Shanfeng Li, S. F. Li, Dmitry V. Naumov, J. H. Cheng, Y. C. Lin, J. F. Chang, B. R. Littlejohn, X. Wang, Changgen Yang, Haoqi Lu, Dejun Li, C. Lu, J. L. Xu, Zhiyuan Wang, and Wenju Huo
Subjects: Physics, Range (particle radiation), Sterile neutrino, Particle physics, 010308 nuclear & particles physics, Daya bay, General Physics and Astronomy, FOS: Physical sciences, Daya Bay Reactor Neutrino Experiment, 01 natural sciences, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), 0103 physical sciences, Calibration, Neutrino, 010306 general physics, Electron neutrino, Mixing (physics)
Abstract: This Letter reports an improved search for light sterile neutrino mixing in the electron antineutrino disappearance channel with the full configuration of the Daya Bay Reactor Neutrino Experiment. With an additional 404 days of data collected in eight antineutrino detectors, this search benefits from 3.6 times the statistics available to the previous publication, as well as from improvements in energy calibration and background reduction. A relative comparison of the rate and energy spectrum of reactor antineutrinos in the three experimental halls yields no evidence of sterile neutrino mixing in the $2\times10^{-4} \lesssim |\Delta m^{2}_{41}| \lesssim 0.3$ eV$^{2}$ mass range. The resulting limits on $\sin^{2}2\theta_{14}$ are improved by approximately a factor of 2 over previous results and constitute the most stringent constraints to date in the $|\Delta m^{2}_{41}| \lesssim 0.2$ eV$^{2}$ region., Comment: 6 pages, 3 figures, 1 table
Published: 2016
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37. Determination of the mixing angle θ13θ13

Author: R. D. McKeown
Subjects: Nuclear physics, Physics, Nuclear and High Energy Physics, Phase (waves), Pontecorvo–Maki–Nakagawa–Sakata matrix, CP violation, Experimental methods, Neutrino, Neutrino oscillation, Measure (mathematics), Mixing (physics)
Abstract: The phenomenon of neutrino flavor oscillations is now experimentally well established (R.D. McKeown and P. Vogel, 2004 [15]). The neutrino mixing matrix depends upon 3 mixing angles and a CP-violating phase. Two of the mixing angles have been measured but the last mixing angle, known as θ_(13), has not yet been experimentally determined to be non-zero. A variety of experimental efforts are underway to attempt establishing a well-determined finite value for θ_(13), and future experiments to further our knowledge of this angle are being proposed. I present an overview of the status of this experimental program to measure θ_(13).
Published: 2010
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38. The PROSPECT Physics Program

Author: Minfang Yeh, M. P. Green, R. Neilson, X. Zhang, Wei Wang, Lindsey J. Bignell, D. J. Dean, Christopher G. White, R. L. Varner, J. P. Brodsky, Michael Febbraro, Hans P. Mumm, G. Barclay, T. J. Langford, Steven Sheets, A. Bowes, H. R. Band, B. R. White, C. Trinh, C.D. Bass, B. Viren, D. E. Jaffe, K. M. Heeger, D. A. Martinez Caicedo, Richard Rosero, J. Ashenfelter, B. Heffron, D. Norcini, J. Dolph, K. Commeford, Nathaniel Bowden, Ke Han, Chao Zhang, B. Seilhan, Dmitry A. Pushin, J. Wilhelmi, A. J. Conant, D. C. Jones, J. Insler, A. B. Balantekin, Xin Qian, M. J. Dolinski, E. Romero, S. Hans, C. D. Bryan, Jim Napolitano, T. Classen, G. Zangakis, B. W. Goddard, R. Sharma, J. K. Gaison, J. J. Cherwinka, K. Gilje, G. Deichert, Y-R Yen, A. Glenn, M. V. Diwan, D. Davee, M DuVernois, P. E. Mueller, Christopher B. Williams, J. T. Matta, H. Yao, Rui-Lin Chu, Anna Erickson, T. Wise, D. Berish, B. Hackett, A. Galindo-Uribarri, B. R. Littlejohn, J. Nikkel, P. T. Surukuchi, M P Mendenhall, and R D McKeown
Subjects: Physics, Nuclear and High Energy Physics, Sterile neutrino, Physics - Instrumentation and Detectors, 010308 nuclear & particles physics, Detector, FOS: Physical sciences, Instrumentation and Detectors (physics.ins-det), Scintillator, Parameter space, 01 natural sciences, Physics::Geophysics, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), Nuclear reactor core, Inverse beta decay, 0103 physical sciences, High Energy Physics::Experiment, Nuclear Experiment (nucl-ex), Neutrino, 010306 general physics, Neutrino oscillation, Nuclear Experiment
Abstract: The Precision Reactor Oscillation and Spectrum Experiment, PROSPECT, is designed to make a precise measurement of the antineutrino spectrum from a highly-enriched uranium reactor and probe eV-scale sterile neutrinos by searching for neutrino oscillations over meter-long distances. PROSPECT is conceived as a 2-phase experiment utilizing segmented $^6$Li-doped liquid scintillator detectors for both efficient detection of reactor antineutrinos through the inverse beta decay reaction and excellent background discrimination. PROSPECT Phase I consists of a movable 3-ton antineutrino detector at distances of 7 - 12 m from the reactor core. It will probe the best-fit point of the $\nu_e$ disappearance experiments at 4$\sigma$ in 1 year and the favored region of the sterile neutrino parameter space at $>$3$\sigma$ in 3 years. With a second antineutrino detector at 15 - 19 m from the reactor, Phase II of PROSPECT can probe the entire allowed parameter space below 10 eV$^{2}$ at 5$\sigma$ in 3 additional years. The measurement of the reactor antineutrino spectrum and the search for short-baseline oscillations with PROSPECT will test the origin of the spectral deviations observed in recent $\theta_{13}$ experiments, search for sterile neutrinos, and conclusively address the hypothesis of sterile neutrinos as an explanation of the reactor anomaly., Comment: 21 pages, 21 figures
Published: 2015

39. Light collection and pulse-shape discrimination in elongated scintillator cells for the PROSPECT reactor antineutrino experiment

Author: E. Romero, Chao Zhang, M. P. Mendenhall, J. J. Cherwinka, K. Gilje, H. Yao, A. Galindo-Uribarri, B. R. Littlejohn, Christopher B. Williams, J. Ashenfelter, X. Zhang, D. J. Dean, A. Bowes, Minfang Yeh, P. T. Surukuchi, H. R. Band, N.T. Stemen, J. K. Gaison, B. R. White, R. Sharma, M. V. Diwan, D. E. Jaffe, D. Davee, Rui-Lin Chu, D. A. Martinez Caicedo, C. D. Bryan, Xin Qian, Y-R Yen, L. Saldaña, G. Deichert, R. D. McKeown, B. Balantekin, C. White, G. Zangakis, A. Glenn, J. Wilhelmi, G. Barclay, B. W. Goddard, T. Wise, D. Berish, B. Viren, R. L. Varner, D. A. Dwyer, K. Commeford, T. J. Langford, Steven Sheets, R. Rosero, Jim Napolitano, S. Hans, Ke Han, D. Norcini, B. Heffron, Wei Wang, Nathaniel Bowden, R. Neilson, J. P. Brodsky, J. Dolph, M. J. Dolinski, Hans P. Mumm, T. Classen, C.D. Bass, K. M. Heeger, M. P. Green, B. Seilhan, Dmitry A. Pushin, and P. E. Mueller
Subjects: Physics - Instrumentation and Detectors, FOS: Physical sciences, Scintillator, High Energy Physics - Experiment, High Energy Physics - Experiment (hep-ex), Particle identification methods, Calorimeters, Optics, Engineering, Calibration, Neutron, Neutrino detectors, Nuclear Experiment, Instrumentation, Mathematical Physics, Spontaneous fission, Physics, Range (particle radiation), Reflector (photography), business.industry, Detector, Instrumentation and Detectors (physics.ins-det), Nuclear & Particles Physics, Other Physical Sciences, Inverse beta decay, Physical Sciences, business
Abstract: A meter-long, 23-liter EJ-309 liquid scintillator detector has been constructed to study the light collection and pulse-shape discrimination performance of elongated scintillator cells for the PROSPECT reactor antineutrino experiment. The magnitude and uniformity of light collection and neutron/gamma discrimination power in the energy range of antineutrino inverse beta decay products have been studied using gamma and spontaneous fission calibration sources deployed along the cell long axis. We also study neutron-gamma discrimination and light collection abilities for differing PMT and reflector configurations. Key design features for optimizing MeV-scale response and background rejection capabilities are identified., Comment: 20 pages, 11 figures
Published: 2015
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40. A new measurement of antineutrino oscillation with the full detector configuration at Daya Bay

Author: X. C. Ruan, S. H. Kettell, X. B. Ma, Maxim Gonchar, H. S. Chen, M. Ye, R. A. Johnson, S. K. Lin, D. Taychenachev, S. C. Li, Liangjian Wen, K. T. McDonald, G. Hussain, Guofu Cao, J. H. Cheng, Min-Xin Guan, X. Wang, Xiaohu Guo, Jinjuan Ren, Q. J. Li, Y. F. Zhao, M. T. Yang, Jianglai Liu, R. Han, D. W. Liu, Minfang Yeh, G. Y. Yu, Dejun Li, L. H. Whitehead, Guisen Li, Li Chang, Y. B. Hsiung, S. S. Liu, Jiawen Zhang, Z. Y. Yu, Y. Ma, Honghan Gong, Z. Y. Deng, Xin Qian, Y. S. Yeh, Xiao-yan Li, B. Roskovec, A. Higuera, Zhi-zhong Xing, J. Lee, Jen-Chieh Peng, X. Xia, Z. P. Zhang, X. L. Ji, Siew Cheng Wong, Lin Yang, J. B. Jiao, J. F. Chang, H. L. H. Wong, Y. X. Zhang, X. P. Ji, L. E. Piilonen, H. Y. Wei, J. J. Cherwinka, Xingtao Huang, Jiaheng Zou, Qingmin Zhang, K. L. Jen, Jinmei Liu, Jing Zhao, M. Bishai, Y. H. Chang, Changgen Yang, L. Lebanowski, Y. Wang, B. B. Shao, Yaping Cheng, Q. Y. Chen, Y. Y. Ding, X. Y. Ma, J. Y. Xu, H. Q. Lu, K. V. Tsang, E. T. Worcester, C. Lu, J. L. Xu, Jim Napolitano, Patrick Huber, J. Yan, J. K. Xia, F. Z. Qi, H. Y. Ngai, R. L. Gill, I. Mitchell, Y. C. Tung, L. M. Hu, Qinglong Wu, Kam Biu Luk, E. Naumova, D. A. Dwyer, T. Kwok, Guey-Lin Lin, L. S. Littenberg, J. de Arcos, T. J. Langford, Lawrence Pinsky, P. Jaffke, R. T. Lei, S. Jetter, Zhiyuan Wang, Jonathan S. Lu, Xuefeng Ding, Li Zhou, H. M. Steiner, K. K. Kwan, Ilya Butorov, T. Hu, Tian Xue, Rupert Leitner, Zhi Ning, A. B. Balantekin, H. H. Zhang, M. V. Diwan, Richard Rosero, J. Xu, D. M. Xia, C. H. Wang, F. Li, C. E. Tull, Michael Kramer, V. Pec, P. Y. Lin, X. Q. Li, Y. K. Heng, Qiumei Ma, S. Hans, A. G. Olshevski, Chun S. J. Pun, Y. Nakajima, J. Park, N. Viaux, B. R. Littlejohn, Shaomin Chen, Jun Cao, W. R. Cen, S. J. Patton, M. W. Kwok, Wenjie Wang, W. Q. Gu, Hanxiong Huang, L. Kang, J. Cummings, R. D. McKeown, J. K. C. Leung, Changjian Lin, C. A. Lewis, W. L. Zhong, Kwok Yin Leung, Dmitry V. Naumov, J. Monari Kebwaro, B. Z. Hu, Vit Vorobel, H. Liu, K. Whisnant, Z. B. Li, H. L. Zhuang, M. Qi, S. R. Ely, E. Draeger, G. X. Sun, Yi Chen, Wei Li, K. M. Heeger, Mengsu Yang, Zhijian Zhang, L. Zheng, Y. Xu, E. C. Huang, J. J. Ling, Yu-leung Chan, K. Lau, W. Tang, Christopher G. White, Q. W. Zhao, Yufeng Li, Bing-Lin Young, N. Y. Wang, B. Viren, Zhiyong Zhang, J. L. Sun, D. E. Jaffe, F. P. An, B. Ren, S. L. Zang, J. M. Link, Y. K. Hor, L. Guo, J. Cheng, D. A. Martinez Caicedo, Yaolin Zhao, Yue Meng, Chao Zhang, L. J. Hu, R. G. Wang, Liang Zhan, W. R. Edwards, Simon Blyth, M. Z. Wang, Ming Chung Chu, W. Hu, Juan Pedro Ochoa-Ricoux, H. R. Band, H. Liang, Yixue Chen, N. Raper, Marco Grassi, Miao He, T. Wise, H. Themann, Guanghua Gong, Ning Zhou, Y. M. Zhang, W. H. Wang, R. W. Hackenburg, and Z. Wang
Subjects: Physics, Particle physics, Physics - Instrumentation and Detectors, Oscillation, Detector, General Physics and Astronomy, FOS: Physical sciences, Daya Bay Reactor Neutrino Experiment, Instrumentation and Detectors (physics.ins-det), Spectral line, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), Calibration, Nuclear Experiment (nucl-ex), Neutrino oscillation, Electron neutrino, Nuclear Experiment, Energy (signal processing)
Abstract: We report a new measurement of electron antineutrino disappearance using the fully-constructed Daya Bay Reactor Neutrino Experiment. The final two of eight antineutrino detectors were installed in the summer of 2012. Including the 404 days of data collected from October 2012 to November 2013 resulted in a total exposure of 6.9$\times$10$^5$ GW$_{\rm th}$-ton-days, a 3.6 times increase over our previous results. Improvements in energy calibration limited variations between detectors to 0.2%. Removal of six $^{241}$Am-$^{13}$C radioactive calibration sources reduced the background by a factor of two for the detectors in the experimental hall furthest from the reactors. Direct prediction of the antineutrino signal in the far detectors based on the measurements in the near detectors explicitly minimized the dependence of the measurement on models of reactor antineutrino emission. The uncertainties in our estimates of $\sin^{2}2\theta_{13}$ and $|\Delta m^2_{ee}|$ were halved as a result of these improvements. Analysis of the relative antineutrino rates and energy spectra between detectors gave $\sin^{2}2\theta_{13} = 0.084\pm0.005$ and $|\Delta m^{2}_{ee}|= (2.42\pm0.11) \times 10^{-3}$ eV$^2$ in the three-neutrino framework., Comment: Updated to match final published version
Published: 2015

41. The muon system of the Daya Bay Reactor antineutrino experiment

Author: A. B. Balantekin, V. Pec, P. Y. Lin, S. Hans, I. Mitchell, Li Chang, Yi Wei, W. R. Edwards, Juan Pedro Ochoa-Ricoux, H. Liu, Y. B. Hsiung, Christopher G. White, E. Dale, Changgen Yang, K. Zhang, E. C. Huang, Miao He, X. C. Chen, E. Naumova, D. A. Dwyer, Jiawen Zhang, H. M. Steiner, W. C. Lai, Lin Yang, P. Hinrichs, C. Pearson, Jing Zhao, Q. W. Zhao, Bing-Lin Young, Jeremiah Monari Kebwaro, Xin Qian, X. Y. Ma, H. Themann, C. Lu, Zhongyuan Zhou, J. L. Xu, G. X. Sun, Chun S. J. Pun, H. Z. Huang, Guanghua Gong, J. Goett, J. Y. Xu, B. B. Shao, Tao Hu, H. Y. Wei, Y. C. Tung, S. K. Lin, Shaomin Chen, X. C. Ruan, Jun Cao, Xiao-yan Li, Steve Virostek, S. J. Patton, W. Q. Gu, L. Kang, Y. Xu, Y. M. Zhang, H. R. Band, J. K. C. Leung, N. Y. Wang, B. Viren, Vit Vorobel, Zhi-zhong Xing, H. Liang, Yixue Chen, H. S. Chen, Rupert Leitner, M. C. McFarlane, Z. Isvan, Dmitry V. Naumov, Wei Li, R. G. Wang, L. S. Wang, T. Kwok, Guey-Lin Lin, Zeyuan Yu, J. B. Jiao, H. Q. Lu, Liangjian Wen, Guofu Cao, M. V. Diwan, Xiaohu Guo, Y. H. Zhang, Liang Zhan, L. H. Whitehead, J. Y. Fu, N. Raper, T. Wise, Zhiyong Zhang, K. T. McDonald, R. T. Lei, X. Q. Li, M. T. Yang, B. R. Littlejohn, G. Y. Yu, E. Draeger, Qinglong Wu, Kam Biu Luk, D. M. Webber, S. J. Chen, X. P. Ji, R. H.M. Tsang, S. H. Kettell, X. B. Ma, X. F. Du, Wei Wang, Y. K. Hor, Patrick Huber, H. L. Zhuang, Jianglai Liu, X. L. Ji, Y. Ma, L. Z. Wang, J. Xu, Y. H. Tam, Jinjuan Ren, X. Wang, J. J. Cherwinka, X. Tang, J. F. Chang, Min-Xin Guan, Chao Zhang, Yu-leung Chan, S. H. Zhang, D. M. Xia, Z. D. Wang, Y. Wang, Q. J. Li, G. H. Han, Dejun Li, Y. Zhao, J. L. Sun, Qingmin Zhang, D. Mohapatra, Maxim Gonchar, Tian Xue, Q. Y. Chen, C. R. Newsom, Li Zhou, C. Chasman, Y. P. Cheng, F. H. Zhang, E. T. Worcester, Jim Napolitano, Y. H. Chang, Guisen Li, H. X. Huang, Honghan Gong, Z. Y. Deng, Z. P. Zhang, Y. B. Liu, J. de Arcos, R. A. Johnson, H. J. Jiang, Y. K. Heng, R. W. Hackenburg, W. K. Ngai, Z. Wang, Changjian Lin, R. Carr, Qingming Ma, D. E. Jaffe, J. L. Liu, Siew Cheng Wong, C. A. Lewis, S. L. Zang, Jiaheng Zou, K. Whisnant, L. Q. Ge, C. H. Wang, Richard Rosero, Y. Nakajima, M. W. Kwok, Wenjie Wang, K. V. Tsang, Lawrence Pinsky, L. Y. Wang, Yue Meng, L. J. Hu, S. S. Liu, Igor Nemchenok, Zhijian Zhang, L. Zheng, J. Lee, F. P. An, B. Ren, H. L. H. Wong, Y. X. Zhang, A. Leung, M. H. Ye, J. Yan, H. Y. Ngai, R. L. Gill, G. Hussain, Michael Kramer, C. E. Tull, Jin Yu, R. D. McKeown, F. Z. Qi, J. E. Morgan, Jen-Chieh Peng, X. Xia, J. M. Link, J. P. Cummings, L. M. Hu, P. Jaffke, W. Beriguete, R. E. Brown, Huo Yan Chen, Xingtao Huang, Y. Z.B. Li, L. S. Littenberg, Zhi Ning, L. Lebanowski, Y. Y. Ding, Kwong Lau, J. Wilhelmi, Xiaoyuan Chen, K. K. Kwan, Ilya Butorov, Mengsu Yang, W. Zhong, A. G. Olshevski, Guo-Lin Xu, Yi Chen, Q. He, B. Z. Hu, F. Li, Simon Blyth, M. Z. Wang, Ming Chung Chu, W. Hu, K. M. Heeger, J. K. Xia, Wing-Hon Lai, M. Qi, S. R. Ely, D. W. Liu, Minfang Yeh, M. Bishai, B. Roskovec, Yaolin Zhao, L. E. Piilonen, S. Jetter, and Y. S. Yeh
Subjects: Physics, Nuclear and High Energy Physics, Photomultiplier, Physics - Instrumentation and Detectors, Muon, Physics::Instrumentation and Detectors, Shields, FOS: Physical sciences, Cosmic ray, Daya Bay Reactor Neutrino Experiment, Instrumentation and Detectors (physics.ins-det), Nuclear reactor, High Energy Physics - Experiment, law.invention, Nuclear physics, High Energy Physics - Experiment (hep-ex), law, High Energy Physics::Experiment, Neutrino, Instrumentation, Cherenkov radiation
Abstract: The Daya Bay experiment consists of functionally identical antineutrino detectors immersed in pools of ultrapure water in three well-separated underground experimental halls near two nuclear reactor complexes. These pools serve both as shields against natural, low-energy radiation, and as water Cherenkov detectors that efficiently detect cosmic muons using arrays of photomultiplier tubes. Each pool is covered by a plane of resistive plate chambers as an additional means of detecting muons. Design, construction, operation, and performance of these muon detectors are described., Comment: 13 pages, 22 figures, to appear as NIM-A 773 (2015) 8-20
Published: 2015

42. 7Be solar neutrino measurement with KamLAND

Author: Y. Yamauchi, R. Matsuda, K. E. Downum, B. K. Fujikawa, M. Otani, Yu. Efremenko, S. Yoshida, A. Obata, K. Ueshima, M. P. Decowski, K. Nakamura, A. Piepke, Leon Hsu, G. Keefer, C. Mauger, H. Ishikawa, C. Grant, Yasuhiro Kishimoto, H. Hanakago, A. Tang, D. Motoki, Hideki Watanabe, Y. Gando, D. A. Dwyer, M. Sakai, H. M. Steiner, T. I. Banks, Hitoshi Murayama, Hidetomo Yoshida, A. Gando, A. Kozlov, Sanshiro Enomoto, M. Koga, G. A. Horton-Smith, Yuri Kamyshkov, J. Shirai, K. Tamae, B. E. Berger, J. G. Learned, K. M. Heeger, J. A. Detwiler, A. Suzuki, K. Nakajima, S. Yamada, D. McKee, S. Matsuda, T. Mitsui, Ke Han, B. D. Xu, K. Tolich, Hugon J Karwowski, D. M. Markoff, Lindley Winslow, A. Oki, Koji Ishidoshiro, I. Shimizu, Y. Takemoto, C. E. Lane, T. O'Donnell, O. Perevozchikov, S. J. Freedman, Koichi Ichimura, R. D. McKeown, Y. Oki, Werner Tornow, Chao Zhang, J. Maricic, T. Bloxham, Kunio Inoue, H. Ikeda, T. Miletic, and Astroparticle Physics (IHEF, IoP, FNWI)
Subjects: Nuclear and High Energy Physics, Particle physics, Physics::Instrumentation and Detectors, Solar neutrino, Astrophysics::High Energy Astrophysical Phenomena, chemistry.chemical_element, Flux, FOS: Physical sciences, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), Nuclear Experiment (nucl-ex), Neutrino oscillation, Nuclear Experiment, Solar and Stellar Astrophysics (astro-ph.SR), Elastic scattering, Physics, Standard solar model, Oscillation, High Energy Physics::Phenomenology, Solar neutrino problem, chemistry, Astrophysics - Solar and Stellar Astrophysics, High Energy Physics::Experiment, Astrophysics::Earth and Planetary Astrophysics, Beryllium
Abstract: We report a measurement of the neutrino-electron elastic scattering rate of 862 keV 7Be solar neutrinos based on a 165.4 kton-day exposure of KamLAND. The observed rate is 582 +/- 90 (kton-day)^-1, which corresponds to a 862 keV 7Be solar neutrino flux of (3.26 +/- 0.50) x 10^9 cm^-2s^-1, assuming a pure electron flavor flux. Comparing this flux with the standard solar model prediction and further assuming three flavor mixing, a nu_e survival probability of 0.66 +/- 0.14 is determined from the KamLAND data. Utilizing a global three flavor oscillation analysis, we obtain a total 7Be solar neutrino flux of (5.82 +/- 0.98) x 10^9 cm^-2s^-1, which is consistent with the standard solar model predictions., 8 pages, 6 figures, submitted to Phys. Rev. C
Published: 2015
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43. Background Radiation Measurements at High Power Research Reactors

Author: S. Morrell, H. Yao, D. Davee, Ke Han, N.T. Stemen, Rui-Lin Chu, Christopher B. Williams, C.D. Bass, D. Martinez, R. L. Varner, Chao Zhang, S. H. Kettell, D. A. Dwyer, T. J. Langford, T. Classen, B. Balantekin, Minfang Yeh, Wei Wang, J. Dolph, J. Ashenfelter, Nathaniel Bowden, B. Heffron, G. Barclay, Hans P. Mumm, G. Deichert, M. P. Green, J. Wilhelmi, K. M. Heeger, T. Wise, H. R. Band, D. Berish, E. Romero, Y-R Yen, X. Zhang, Scott M. Watson, M. J. Dolinski, D. Norcini, Richard Rosero, C. Baldenegro, A. Glenn, A. Galindo-Uribarri, B. R. Littlejohn, L. Saldaña, B. Seilhan, Dmitry A. Pushin, P. T. Surukuchi, P. E. Mueller, D. J. Dean, Jim Napolitano, J.K. Gaison, R. D. McKeown, D. E. Jaffe, Christopher G. White, B. R. White, S. Fan, R. Sharma, J. J. Cherwinka, K. Gilje, Scott J. Thompson, S. Hans, and C. D. Bryan
Subjects: Nuclear and High Energy Physics, Physics - Instrumentation and Detectors, Nuclear engineering, FOS: Physical sciences, Atomic, 01 natural sciences, Background measurements, law.invention, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), Particle and Plasma Physics, law, Neutron flux, 0103 physical sciences, Nuclear, Neutron, Nuclear Experiment (nucl-ex), 010306 general physics, Instrumentation, Nuclear Experiment, Background radiation, Physics, 010308 nuclear & particles physics, technology, industry, and agriculture, Molecular, Instrumentation and Detectors (physics.ins-det), Nuclear reactor, Reactor antineutrino detection, Nuclear & Particles Physics, Other Physical Sciences, Radiation flux, Research reactors, Astronomical and Space Sciences
Abstract: Research reactors host a wide range of activities that make use of the intense neutron fluxes generated at these facilities. Recent interest in performing measurements with relatively low event rates, e.g. reactor antineutrino detection, at these facilities necessitates a detailed understanding of background radiation fields. Both reactor-correlated and naturally occurring background sources are potentially important, even at levels well below those of importance for typical activities. Here we describe a comprehensive series of background assessments at three high-power research reactors, including $\gamma$-ray, neutron, and muon measurements. For each facility we describe the characteristics and identify the sources of the background fields encountered. The general understanding gained of background production mechanisms and their relationship to facility features will prove valuable for the planning of any sensitive measurement conducted therein., Comment: 26 pages, 28 figures. Accepted for publication in Nuclear Instruments and Methods A. v2 incorporates minor revisions requested by NIMA
Published: 2015
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44. The cryogenic target for the experiment at Jefferson lab

Author: Kenneth Gustafsson, R. Neveling, Lars Hannelius, E. J. Beise, Silviu Covrig, R. D. McKeown, C. E. Jones, Jianglai Liu, Robert Carr, M. C. Herda, Aamer Rauf, and G. R. Smith
Subjects: Physics, Nuclear and High Energy Physics, Hydrogen, 010308 nuclear & particles physics, chemistry.chemical_element, Cryopump, Cryogenics, 01 natural sciences, 7. Clean energy, Bin, chemistry, Deuterium, 0103 physical sciences, Heat exchanger, Atomic physics, 010306 general physics, Instrumentation, Liquid hydrogen, Beam (structure)
Abstract: A cryogenic horizontal single loop target has been designed, built, tested and operated for the G 0 experiment in Hall C at Jefferson Lab. The target cell is 20 cm long, the loop volume is 6.5 l and the target operates with the cryogenic pump fully immersed in the fluid. The target has been designed to operate at 30 Hz rotational pump speed with either liquid hydrogen or liquid deuterium. The high-power heat exchanger is able to remove 1000 W of heat from the liquid hydrogen, while the nominal electron beam with current of 40 μ A and energy of 3 GeV deposits about 320 W of heat into the liquid. The increase in the systematic uncertainty due to the liquid hydrogen target is negligible on the scale of a parity violation experiment. The global normalized yield reduction for 40 μ A beam is about 1.5% and the target density fluctuations contribute less than 238 ppm (parts per million) to the total asymmetry width, typically about 1200 ppm, in a Q 2 bin.
Published: 2005
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45. Erratum to: 'Nuclear effects on R=σ/σ in deep-inelastic scattering'

Author: H. Avakian, Alan M. Nathan, F.H. Heinsius, E. R. Kinney, A. Avetisian, A. Jgoun, K. Ackerstaff, Klaus Rith, M. Henoch, P. Geiger, E. E. W. Bruins, C. Grosshauser, R. A. Ristinen, J. M. Niczyporuk, N. Meyners, A. Airapetian, Y. Naryshkin, A. Brull, Brons, A. Reali, P. Lenisa, A. Izotov, A. Gute, J. Seibert, T. Shin, V. Vikhrov, J.-O. Hansen, Manuella Vincter, V. A. Kozlov, H. Kolster, Igor Akushevich, A. Borissov, F. Garibaldi, J. van Hunen, B. W. Filippone, A.O. Mateos, S. Yoneyama, L. G. Greeniaus, Haiyan Gao, W. Lachnit, G. S. Kyle, Michael Tytgat, R. Mussa, B. D. Fox, Wolfgang Lorenzon, W.-D. Nowak, M. Kurisuno, M. Guidal, R. C. W. Henderson, S. Brauksiepe, Yasuhiro Sakemi, J. Blouw, M. Sutter, B. Tipton, M. Amarian, R. Openshaw, R. J. Holt, J.E. Belz, E. De Sanctis, E. C. Aschenauer, V. A. Korotkov, Hans von der Schmitt, V. Shutov, B. Bains, M. Ferstl, S. Taroian, G. P. Capitani, A. Kisselev, M. Kolstein, P. Rossi, G. van der Steenhoven, F. Masoli, J. Visser, M. Ruh, S. Belostotski, A. Golendukhin, Y. Gärber, S. Frullani, Jinsong Ouyang, C. Simani, Naomi C R Makins, Y. Holler, M. Nupieri, W. Hoprich, H. Tallini, F. Neunreither, U. Stoesslein, H. Fischer, M. Hartig, L. H. Kramer, Hiroaki Kobayashi, A. Fechtchenko, K. Fiedler, J. W. Martin, J. Wendland, D. Hasch, V. Gyurjian, E. Cisbani, O. Grebeniouk, E. Volk, Ralf Hertenberger, B. Bray, T. A. Shibata, K. Shibatani, K. Königsmann, Wolfgang Korsch, R.O. Avakian, P. F. Dalpiaz, H. Ihssen, T. Wise, S. Bernreuther, F. Meissner, K. Woller, F. Schmidt, O. Häusser, A. Schwind, M. Spengos, R. P. Redwine, M. Beckmann, J. F. J. van den Brand, I.A. Savin, D. De Schepper, A. Dvoredsky, J. P. Haas, P.W. Green, Miller, E. Devitsin, P. Kitching, H. E. Jackson, P.K.A. de Witt Huberts, Michael Pitt, R. D. McKeown, V. G. Krivokhijine, G.R. Court, G. Elbakian, Andreas Schäfer, W. Brückner, M. McAndrew, C. Baumgarten, Ralf Kaiser, B. R. Owen, Ross Milner, F. K. Martens, C. Scarlett, E. Steffens, G. Gavrilov, Valeria Muccifora, A. Nagaitsev, Alessandra Fantoni, Michael Düren, P. Chumney, G. Graw, Michel Vetterli, A. Simon, M. Bouwhuis, H. Böttcher, S. F. Pate, H. J. Bulten, J. Stewart, N. Akopov, W. Wander, K. Sinram, V. Gharibyan, Mauro Iodice, V. Papavassiliou, R. Van de Vyver, G. M. Urciuoli, C. A. Miller, J. Ely, J. Franz, E. Thomas, G. Schnell, N. Koch, S. Potashov, S. E. Williamson, H. Zohrabian, P. Carter, M. Kirsch, Adel Terkulov, Dirk Ryckbosch, David H. Potterveld, P. Di Nezza, Th. Benisch, B. Braun, Thomas O'Neill, F. Menden, K. P. Schüler, S. Rudnitsky, A. Metz, Nicola Bianchi, O. Mikloukho, A. R. Reolon, Kevin L. McIlhany, G. Rakness, P. Slavich, Jeffrey Brack, J. Stenger, and W. Haeberli
Subjects: Nuclear physics, Physics, Nuclear and High Energy Physics, Cross section.transverse, Deuterium, Bibliography, Deep inelastic scattering
Published: 2003
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46. Novel technique for ultra-sensitive determination of trace elements in organic scintillators

Author: Robert Swinney, David C. Glasgow, Z. Djurcic, R. D. McKeown, Lin-wen hu, Andreas Piepke, and B. Tipton
Subjects: Detection limit, Physics, Nuclear and High Energy Physics, Particle physics, Ion exchange, Radiochemistry, FOS: Physical sciences, Scintillator, High Energy Physics - Experiment, Vacuum evaporation, High Energy Physics - Experiment (hep-ex), Irradiation, Nuclear Experiment (nucl-ex), Neutrino, Nuclear Experiment, Instrumentation, Quartz, Neutron activation
Abstract: A technique based on neutron activation has been developed for an extremely high sensitivity analysis of trace elements in organic materials. Organic materials are sealed in plastic or high purity quartz and irradiated at the HFIR and MITR. The most volatile materials such as liquid scintillator (LS) are first preconcentrated by clean vacuum evaporation. Activities of interest are separated from side activities by acid digestion and ion exchange. The technique has been applied to study the liquid scintillator used in the KamLAND neutrino experiment. Detection limits of, 16 pages, 3 figures, accepted for publication in Nuclear Instruments and Methods A
Published: 2003
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47. A liquid hydrogen target for the precision measurement of the weak mixing angle in Møller scattering at SLAC

Author: R. Carr, G. Oxoby, R. D. McKeown, Jiansong Gao, J. G. Weisend, M. Racine, A. Candia, K. Gustafsson, R. Boyce, W. Kaminskas, A. Scott, T. Weber, W. Burgess, P.L. Anthony, and C. E. Jones
Subjects: Physics, Nuclear and High Energy Physics, Hydrogen, Scattering, chemistry.chemical_element, Particle accelerator, Electron, Linear particle accelerator, law.invention, chemistry, law, Atomic physics, Møller scattering, Instrumentation, Liquid hydrogen, Beam (structure)
Abstract: A 150 cm long liquid hydrogen target has been built for the SLAC End Station A E158 experiment. The target loop volume is 55 liters, and the maximum target heat load deposited by the electron beam is {approx} 700 W. The liquid hydrogen density fluctuation with full beam current (120 Hz repetition rate, 6 x 10{sup 11} electrons/spill) on target is well below 10{sup -4} level, which fulfills the requirement for a precision measurement of the weak mixing angle in the polarized electron-electron scattering process.
Published: 2003
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48. Indicators of deprivation, voting patterns, and health status at area level in the Republic of Ireland

Author: A Timoney, Sharon Friel, D McKeown, and Cecily Kelleher
Subjects: Research Report, Adult, Male, medicine.medical_specialty, Adolescent, Epidemiology, Cross-sectional study, Health Status, media_common.quotation_subject, education, Population, Statistics, Nonparametric, health services administration, Surveys and Questionnaires, Voting, medicine, Civil Rights, Health Status Indicators, Humans, Sociology, Mortality, Life Style, Socioeconomic status, health care economics and organizations, Aged, Self-rated health, media_common, education.field_of_study, Public health, Public Health, Environmental and Occupational Health, Ecological study, Middle Aged, Health Surveys, humanities, Cross-Sectional Studies, Socioeconomic Factors, Female, Health education, Ireland, Demography
Abstract: Study objective: To determine what relation, if any, exists between mortality patterns, indicators of deprivation, general lifestyle and social attitudes, as exemplified by general election voting pattern, in the Republic of Ireland. A relation has been demonstrated previously between voting and mortality patterns in the United Kingdom. Design: Cross sectional ecological study using three data sources. Standardised mortality ratios (SMR) were based on mortality rates at county level and 1996 census data from the Central Statistics Office, 1997 general election first preference voting data in all 41 constituencies were aggregated to county level. Selected reported measures of health status, lifestyle and social circumstances are from the first ever National survey on lifestyles, attitudes and nutrition (SLAN). This study comprised adults over 18 years sampled by post using the electoral register from 273 representative district electoral divisions. Univariate inter-relations were examined at individual level for the dataset as a whole, adjusting for age and at aggregated level for 26 county borough areas, which included the two largest cities and for 22 county areas, which afforded correlation with voting pattern, using the method of Pearson's correlation coefficient. Participants: 1 806 932 votes were cast nationally at the 1997 general election, representing a voter turnout of 65.92 %. There was an overall response rate of 62% to SLAN comprising 6539 adults (47% male). The demographic pattern of survey respondents was consistent with that of the general population over 18 years. Main results: At individual level there was a large number of highly significant inter-relations between indicators of deprivation, various measures of self rated health status and lifestyle factors. Aggregated at 26 county level percentage unemployed (r=0.408, p=0.038), and level of education (r=0.475, p=0.014) related significantly to SMR and inversely to both fruit and vegetable consumption (r=-0.672, p=0.001) and excess alcohol consumption among men (r=-595, p=0.003). Those rating their health as fair or poor were more likely to report a poor quality of life (r=0.487, p=0.022), to have none or primary school education only (r=0.428, p=0.047), or to have a means tested medical services card (r=0.428, p=0.047). There was no significant relation between SMR and voting pattern for the two main political parties (67.28% first preferences) but a significant relation with left wing voting (r=0.446, p=0.037). Fianna Fail voting pattern was inversely related to level of dissatisfaction with health (r= -0.59, p
Published: 2002
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49. Jefferson Lab Science, Past and Future

Author: R. D. McKeown
Subjects: Accelerator Physics (physics.acc-ph), Physics, Hadron, Electroweak interaction, Nuclear Theory, FOS: Physical sciences, Particle accelerator, Atomic and Molecular Physics, and Optics, law.invention, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), Electron beam accelerator, law, Physics::Accelerator Physics, High Energy Physics::Experiment, Physics - Accelerator Physics, Nuclear Experiment (nucl-ex), Nuclear Experiment, Electron scattering, Beam (structure)
Abstract: The Continuous Electron Beam Accelerator Facility (CEBAF) and associated experimental equipment at Jefferson Lab comprise a unique facility for experimental nuclear physics. This facility is presently being upgraded, which will enable a new experimental program with substantial discovery potential to address important topics in nuclear, hadronic, and electroweak physics. Further in the future, it is envisioned that the Laboratory will evolve into an electron-ion colliding beam facility., 6 pages, 2 Figures, Light Cone 2014. arXiv admin note: substantial text overlap with arXiv:1303.6622
Published: 2014

50. Independent measurement of the neutrino mixing angleθ13via neutron capture on hydrogen at Daya Bay

Author: S. S. Liu, Xiaohui Qian, J. Lee, H. L. H. Wong, C. E. Tull, A. Leung, Y. C. Lin, J. Yan, H. Y. Ngai, R. L. Gill, M. Ye, G. Hussain, Richard Rosero, E. Naumova, D. A. Dwyer, L. S. Wang, Y. L. Chan, Y. S. Yeh, D. M. Webber, X. L. Ji, Jen-Chieh Peng, Lin Yang, X. Xia, Yi Wei, J. K. C. Leung, J. Y. Fu, T. Wise, H. M. Steiner, D. W. Liu, Minfang Yeh, Qiumei Ma, Jinmei Liu, Jing Zhao, X. Y. Ma, Y. Q. Ma, Qinglong Wu, Y. H. Tam, V. Pec, P. Y. Lin, S. Hans, Z. P. Zhang, Y. B. Liu, H. J. Jiang, Christopher C. Yang, M. Qi, S. R. Ely, J. Y. Xu, S. H. Kettell, X. B. Ma, X. Wang, M. W. Kwok, Wenjie Wang, B. Roskovec, Baoqing Zeng, I. Mitchell, M. Bishai, Z. M. Wang, Li Zhou, Qingmin Zhang, Xi Chen, H. S. Chen, Guisen Li, Haoqi Lu, Juan Pedro Ochoa-Ricoux, L. M. Hu, Tian Xue, W. L. Zhong, J. P. Cummings, Vit Vorobel, L. H. Whitehead, Michael Kramer, Q. Y. Chen, Dejun Li, Honghan Gong, Maxim Gonchar, D. E. Jaffe, Y. F. Wang, Z. Isvan, Ziyan Deng, Xinglong Li, Wei Li, H. Z. Huang, Jianglai Liu, L. S. Pinsky, R. A. Johnson, Chun S. J. Pun, Miao He, Yaping Cheng, Siew Cheng Wong, Jiawen Zhang, Y. K. Heng, S. J. Patton, W. Q. Gu, Christopher G. White, Shaomin Chen, Jun Cao, Jiaheng Zou, W. Wang, B. B. Shao, Mengyun Guan, W. C. Lai, S. L. Zang, Jin Yu, Yaolin Zhao, K. T. McDonald, Bin Ren, Jim Napolitano, H. Y. Wei, H. L. Zhuang, M. C. McFarlane, K. V. Tsang, R. H.M. Tsang, Li Chang, Zhiyong Zhang, H. Themann, Xiao Tang, Dmitry V. Naumov, Rupert Leitner, C. A. Lewis, Guanghua Gong, Y. B. Hsiung, R. D. McKeown, E. Draeger, Chi Lin, W. R. Edwards, J. F. Chang, T. Kwok, Guey-Lin Lin, K. Whisnant, M. V. Diwan, L. Y. Wang, Y. C. Tung, Y. Xu, Y. M. Zhang, X. T. Huang, F. Li, Y. K. Hor, J. J. Cherwinka, S. K. Lin, X. Q. Li, Zhongyuan Zhou, B. R. Littlejohn, Zhi-zhong Xing, P. Hinrichs, K. M. Heeger, Patrick Huber, Jinjuan Ren, Q. J. Li, C. Lu, X. C. Ruan, Y. Zhao, Jia Xu, Chao Zhang, X. F. Du, Bing-Lin Young, X. P. Ji, Yufeng Li, J. L. Xu, K. L. Jen, J. K. Xia, H. Liang, Yixue Chen, P. Jaffke, G. H. Han, B. Z. Hu, H. R. Band, Z. B. Li, W. Beriguete, Liangjian Wen, Guofu Cao, J. L. Sun, Simon Blyth, R. W. Hackenburg, Z. Wang, E. T. Worcester, F. Z. Qi, M. Z. Wang, Ming Chung Chu, J. de Arcos, T. Hu, W. Hu, Yan Zhang, A. B. Balantekin, L. Kang, N. Raper, L. E. Piilonen, F. H. Zhang, N. Y. Wang, B. Viren, H. Liu, X. H. Guo, C. H. Wang, S. Jetter, R. G. Wang, Y. H. Chang, Liang Zhan, Qingxian Zhang, M. T. Yang, Y. Nakajima, G. Y. Yu, Z. Y. Yu, S. H. Zhang, D. M. Xia, C. Chasman, J. B. Jiao, R. T. Lei, E. C. Huang, J. J. Ling, Q. W. Zhao, L. Q. Ge, Y. C. Zhang, Y. X. Zhang, L. Lebanowski, Y. Y. Ding, Yue Meng, Kam-Biu Luk, K. K. Kwan, L. J. Hu, Ilya Butorov, Fengpeng An, A. G. Olshevski, J. Monari Kebwaro, Yi Chen, Kwong Lau, G. X. Sun, Mengsu Yang, Igor Nemchenok, Zhijian Zhang, L. Zheng, J. M. Link, L. S. Littenberg, and Zhi Ning
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Hydrogen, Oscillation, Gamma ray, chemistry.chemical_element, Daya Bay Reactor Neutrino Experiment, Nuclear physics, Neutron capture, chemistry, Neutrino, Neutrino oscillation, Charged current
Abstract: A new measurement of the θ_(13) mixing angle has been obtained at the Daya Bay Reactor Neutrino Experiment via the detection of inverse beta decays tagged by neutron capture on hydrogen. The antineutrino events for hydrogen capture are distinct from those for gadolinium capture with largely different systematic uncertainties, allowing a determination independent of the gadolinium-capture result and an improvement on the precision of the θ_(13) measurement. With a 217-day antineutrino data set obtained with six antineutrino detectors and from six 2.9 GW_(th) reactors, the rate deficit observed at the far hall is interpreted as sin^2 2θ_(13) = 0.083±0.018 in the three-flavor oscillation model. When combined with the gadolinium-capture result from Daya Bay, we obtain sin^2 2θ_(13) = 0.089±0.008 as the final result for the six-antineutrino-detector configuration of the Daya Bay experiment.
Published: 2014
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