A high precision calibration of the nonlinear energy response at Daya Bay

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 $\gamma$ calibration points from deployed and naturally occurring radioactive sources, the $\beta$ 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.

arXiv comment17 pages, 22 figures, 4 tables. Final version to be published in NIM-A

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Cited by in corpus (3)

• Improved Sterile Neutrino Constraints from the STEREO Experiment with 179 Days of Reactor-On Data
• Antineutrino Energy Spectrum Unfolding Based on the Daya Bay Measurement and Its Applications
• A Decade of Discoveries by the Daya Bay Reactor Neutrino Experiment