A high precision calibration of the nonlinear energy response at Daya Bay
Journal
Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Journal Volume
940
Pages
230-242
Date Issued
2019
Author(s)
Adey D. et al. (Daya Bay Collaboration)
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 12B 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. ? 2019
Subjects
Analog to digital conversion; Elementary particles; Kinetic energy; Radioactivity; Scintillation counters; Daya Bay; Energy calibration; Flash Analog-to-digital Converters; High-precision calibration; Liquid scintillator; Neutrino; Neutrino experiments; Radioactive sources; Calibration
SDGs
Type
journal article