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

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Title: A high precision calibration of the nonlinear energy response at Daya Bay.
Authors: Adey, D.1 (AUTHOR), An, F.P.2 (AUTHOR), Balantekin, A.B.3 (AUTHOR), Band, H.R.4 (AUTHOR), Bishai, M.5 (AUTHOR), Blyth, S.6 (AUTHOR), Cao, D.7 (AUTHOR), Cao, G.F.1 (AUTHOR), Cao, J.1 (AUTHOR), Chang, J.F.1 (AUTHOR), Chang, Y.8 (AUTHOR), Chen, H.S.1 (AUTHOR), Chen, S.M.9 (AUTHOR), Chen, Y.10,11 (AUTHOR), Chen, Y.X.12 (AUTHOR), Cheng, J.1 (AUTHOR), Cheng, Z.K.11 (AUTHOR), Cherwinka, J.J.3 (AUTHOR), Chu, M.C.13 (AUTHOR), Chukanov, A.14 (AUTHOR)
Source: Nuclear Instruments & Methods in Physics Research Section A. Oct2019, Vol. 940, p230-242. 13p.
Subjects: Calibration, Analog-to-digital converters, Liquid scintillators, Bays, Neutrinos, Neutrino interactions
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. [ABSTRACT FROM AUTHOR]
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Database: Engineering Source
Description
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. [ABSTRACT FROM AUTHOR]
ISSN:01689002
DOI:10.1016/j.nima.2019.06.031