https://doi.org/10.1140/epjc/s10052-021-09565-z
Regular Article - Experimental Physics
JUNO sensitivity to low energy atmospheric neutrino spectra
1
Yerevan Physics Institute, Yerevan, Armenia
2
Université Libre de Bruxelles, Brussels, Belgium
3
Universidade Estadual de Londrina, Londrina, Brazil
4
Pontificia Universidade Catolica do Rio de Janeiro, Rio, Brazil
5
Pontificia Universidad Católica de Chile, Santiago, Chile
6
Universidad Tecnica Federico Santa Maria, Valparaiso, Chile
7
Beijing Institute of Spacecraft Environment Engineering, Beijing, China
8
Beijing Normal University, Beijing, China
9
China Institute of Atomic Energy, Beijing, China
10
Institute of High Energy Physics, Beijing, China
11
North China Electric Power University, Beijing, China
12
School of Physics, Peking University, Beijing, China
13
Tsinghua University, Beijing, China
14
University of Chinese Academy of Sciences, Beijing, China
15
Jilin University, Changchun, China
16
College of Electronic Science and Engineering, National University of Defense Technology, Changsha, China
17
Chongqing University, Chongqing, China
18
Dongguan University of Technology, Dongguan, China
19
Jinan University, Guangzhou, China
20
Sun Yat-Sen University, Guangzhou, China
21
Harbin Institute of Technology, Harbin, China
22
University of Science and Technology of China, Hefei, China
23
The Radiochemistry and Nuclear Chemistry Group in University of South China, Hengyang, China
24
Wuyi University, Jiangmen, China
25
Shandong University, Jinan, China, and Key Laboratory of Particle Physics and Particle Irradiation of Ministry of Education, Shandong University, Qingdao, China
26
Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou, China
27
Nanjing University, Nanjing, China
28
Guangxi University, Nanning, China
29
East China University of Science and Technology, Shanghai, China
30
School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai, China
31
Tsung-Dao Lee Institute, Shanghai Jiao Tong University, Shanghai, China
32
Institute of Hydrogeology and Environmental Geology, Chinese Academy of Geological Sciences, Shijiazhuang, China
33
Nankai University, Tianjin, China
34
Wuhan University, Wuhan, China
35
Xi’an Jiaotong University, Xi’an, China
36
Xiamen University, Xiamen, China
37
School of Physics and Microelectronics, Zhengzhou University, Zhengzhou, China
38
Institute of Physics, National Yang Ming Chiao Tung University, Hsinchu, Taiwan
39
National United University, Miao-Li, Taiwan
40
Department of Physics, National Taiwan University, Taipei, Taiwan
41
Charles University, Faculty of Mathematics and Physics, Prague, Czech Republic
42
University of Jyvaskyla, Department of Physics, Jyvaskyla, Finland
43
IJCLab, Université Paris-Saclay, CNRS/IN2P3, 91405 Orsay, France
44
Univ. Bordeaux, CNRS, CENBG, UMR 5797, F-33170 Gradignan, France
45
IPHC, Université de Strasbourg, CNRS/IN2P3, F-67037 Strasbourg, France
46
Centre de Physique des Particules de Marseille, Marseille, France
47
SUBATECH, Université de Nantes, IMT Atlantique, CNRS-IN2P3, Nantes, France
48
III. Physikalisches Institut B, RWTH Aachen University, Aachen, Germany
49
Institute of Experimental Physics, University of Hamburg, Hamburg, Germany
50
Forschungszentrum Jülich GmbH, Nuclear Physics Institute IKP-2, Jülich, Germany
51
Forschungszentrum Jülich GmbH, Central Institute of Engineering, Electronics and Analytics - Electronic Systems (ZEA-2), Jülich, Germany
52
Institute of Physics and Excellence Cluster PRISMA+, Johannes-Gutenberg Universität Mainz, Mainz, Germany
53
Technische Universität München, München, Germany
54
Eberhard Karls Universität Tübingen, Physikalisches Institut, Tübingen, Germany
55
INFN Catania and Dipartimento di Fisica e Astronomia dell Università di Catania, Catania, Italy
56
Department of Physics and Earth Science, University of Ferrara and INFN Sezione di Ferrara, Ferrara, Italy
57
INFN Sezione di Milano and Dipartimento di Fisica dell Università di Milano, Milano, Italy
58
INFN Milano Bicocca and University of Milano Bicocca, Milano, Italy
59
INFN Milano Bicocca and Politecnico of Milano, Milano, Italy
60
INFN Sezione di Padova, Padova, Italy
61
Dipartimento di Fisica e Astronomia dell’Università di Padova and INFN Sezione di Padova, Padova, Italy
62
INFN Sezione di Perugia and Dipartimento di Chimica, Biologia e Biotecnologie dell’Università di Perugia, Perugia, Italy
63
Laboratori Nazionali di Frascati dell’INFN, Roma, Italy
64
University of Roma Tre and INFN Sezione Roma Tre, Roma, Italy
65
Institute of Electronics and Computer Science, Riga, Latvia
66
Pakistan Institute of Nuclear Science and Technology, Islamabad, Pakistan
67
Joint Institute for Nuclear Research, Dubna, Russia
68
Institute for Nuclear Research of the Russian Academy of Sciences, Moscow, Russia
69
Lomonosov Moscow State University, Moscow, Russia
70
Comenius University Bratislava, Faculty of Mathematics, Physics and Informatics, Bratislava, Slovakia
71
Department of Physics, Faculty of Science, Chulalongkorn University, Bangkok, Thailand
72
National Astronomical Research Institute of Thailand, Chiang Mai, Thailand
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Suranaree University of Technology, Nakhon Ratchasima, Thailand
74
Department of Physics and Astronomy, University of California, Irvine, California, USA
xm
Juno_pub_comm@juno.ihep.ac.cn
Received:
10
June
2021
Accepted:
19
August
2021
Published online:
8
October
2021
Atmospheric neutrinos are one of the most relevant natural neutrino sources that can be exploited to infer properties about cosmic rays and neutrino oscillations. The Jiangmen Underground Neutrino Observatory (JUNO) experiment, a 20 kton liquid scintillator detector with excellent energy resolution is currently under construction in China. JUNO will be able to detect several atmospheric neutrinos per day given the large volume. A study on the JUNO detection and reconstruction capabilities of atmospheric 
and 
fluxes is presented in this paper. In this study, a sample of atmospheric neutrino Monte Carlo events has been generated, starting from theoretical models, and then processed by the detector simulation. The excellent timing resolution of the 3” PMT light detection system of JUNO detector and the much higher light yield for scintillation over Cherenkov allow to measure the time structure of the scintillation light with very high precision. Since and interactions produce a slightly different light pattern, the different time evolution of light allows to discriminate the flavor of primary neutrinos. A probabilistic unfolding method has been used, in order to infer the primary neutrino energy spectrum from the detector experimental observables. The simulated spectrum has been reconstructed between 100 MeV and 10 GeV, showing a great potential of the detector in the atmospheric low energy region.
© The Author(s) 2021
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