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

An, F. P. and McKeown, R. D. (2018) Seasonal variation of the underground cosmic muon flux observed at Daya Bay. Journal of Cosmology and Astroparticle Physics, 2018 (1). Art. No. 001. ISSN 1475-7516. https://resolver.caltech.edu/CaltechAUTHORS:20180103-110814890

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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 α, describing how a variation in the muon rate relates to a variation in the effective atmospheric temperature, is found to be α_(EH1) = 0.362±0.031, α_(EH2) = 0.433±0.038 and α_(EH3) = 0.641±0.057 for each experimental hall.


Item Type:Article
Related URLs:
URLURL TypeDescription
https://doi.org/10.1088/1475-7516/2018/01/001DOIArticle
http://iopscience.iop.org/article/10.1088/1475-7516/2018/01/001/metaPublisherArticle
https://arxiv.org/abs/1708.01265arXivDiscussion Paper
Additional Information:© 2018 IOP Publishing Ltd and Sissa Medialab. Received 7 August 2017; Accepted 27 November 2017; Published 2 January 2018. Daya Bay is supported in part by the Ministry of Science and Technology of China, the U.S. Department of Energy, the Chinese Academy of Sciences, the CAS Center for Excellence in Particle Physics, the National Natural Science Foundation of China, the Guangdong provincial government, the Shenzhen municipal government, the China Guangdong Nuclear Power Group, Key Laboratory of Particle and Radiation Imaging (Tsinghua University), the Ministry of Education, Key Laboratory of Particle Physics and Particle Irradiation (Shandong University), the Ministry of Education, Shanghai Laboratory for Particle Physics and Cosmology, the Research Grants Council of the Hong Kong Special Administrative Region of China, the University Development Fund of The University of Hong Kong, the MOE program for Research of Excellence at National Taiwan University, National Chiao-Tung University, and NSC fund support from Taiwan, the U.S. National Science Foundation, the Alfred P. Sloan Foundation, the Ministry of Education, Youth, and Sports of the Czech Republic, the Joint Institute of Nuclear Research in Dubna, Russia, the CNFC-RFBR joint research program, the National Commission of Scientific and Technological Research of Chile, and the Tsinghua University Initiative Scientific Research Program. We acknowledge Yellow River Engineering Consulting Co., Ltd., and China Railway 15th Bureau Group Co., Ltd., for building the underground laboratory. We are grateful for the ongoing cooperation from the China General Nuclear Power Group and China Light and Power Company.
Funders:
Funding AgencyGrant Number
Ministry of Science and Technology (Taipei)UNSPECIFIED
Department of Energy (DOE)UNSPECIFIED
Chinese Academy of SciencesUNSPECIFIED
CAS Center for Excellence in Particle PhysicsUNSPECIFIED
National Natural Science Foundation of ChinaUNSPECIFIED
Guangdong Provincial GovernmentUNSPECIFIED
Shenzhen Municipal GovernmentUNSPECIFIED
China Guangdong Nuclear Power GroupUNSPECIFIED
Tsinghua UniversityUNSPECIFIED
Shandong UniversityUNSPECIFIED
Shanghai Laboratory for Particle Physics and CosmologyUNSPECIFIED
Research Grants Council of the Hong Kong Special Administrative Region of ChinaUNSPECIFIED
University of Hong KongUNSPECIFIED
National Taiwan UniversityUNSPECIFIED
National Chiao-Tung UniversityUNSPECIFIED
NSFUNSPECIFIED
Alfred P. Sloan FoundationUNSPECIFIED
Ministry of Education, Youth, and Sports of the Czech RepublicUNSPECIFIED
JINR (Dubna)UNSPECIFIED
CNFC-RFBR Joint Research ProgramUNSPECIFIED
Comisión Nacional de Investigación Científica y Tecnológica (CONICYT)UNSPECIFIED
Russian Foundation for Basic ResearchUNSPECIFIED
Issue or Number:1
Record Number:CaltechAUTHORS:20180103-110814890
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20180103-110814890
Official Citation:F.P. An et al JCAP01(2018)001
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:84054
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:03 Jan 2018 19:33
Last Modified:03 Oct 2019 19:14

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