期刊
出版社
ELSEVIER
DOI: 10.1016/j.nima.2019.06.031
关键词
Neutrino; Liquid scintillator; Energy calibration; Daya Bay
类别
资金
- Ministry of Science and Technology of China
- U.S. Department of Energy
- Chinese Academy of Sciences
- CAS Center for Excellence in Particle Physics, China
- National Natural Science Foundation of China
- Guangdong provincial government, China
- Shenzhen municipal government, China
- China General Nuclear Power Group
- Key Laboratory of Particle and Radiation Imaging (Tsinghua University)
- Ministry of Education, China
- Key Laboratory of Particle Physics and Particle Irradiation (Shandong University)
- Shanghai Laboratory for Particle Physics and Cosmology, China
- Research Grants Council of the Hong Kong Special Administrative Region of China
- University Development Fund of The University of Hong Kong
- MOE program for Research of Excellence at National Taiwan University
- National Chiao-Tung University, China
- NSC fund from Taiwan
- U.S. National Science Foundation
- Alfred P. Sloan Foundation, United States
- Ministry of Education, Youth, and Sports of the Czech Republic
- Charles University Research Centre UNCE
- Joint Institute of Nuclear Research in Dubna, Russia
- National Commission of Scientific and Technological Research of Chile
- Tsinghua University, China Initiative Scientific Research Program
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.. calibration points from deployed and naturally occurring radioactive sources, the.. spectrum from B-12 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.
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