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Prediction of energy resolution in the JUNO experiment

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Prediction of energy resolution in the JUNO experiment
This paper presents an energy resolution study of the JUNO experiment,incorporating the latest know-ledge acquired during the detector construction phase.The determination of neutrino mass ordering in JUNO re-quires an exceptional energy resolution better than 3％at 1 MeV.To achieve this ambitious goal,significant efforts have been undertaken in the design and production of the key components of the JUNO detector.Various factors af-fecting the detection of inverse beta decay signals have an impact on the energy resolution,extending beyond the statistical fluctuations of the detected number of photons,such as the properties of the liquid scintillator,perform-ance of photomultiplier tubes,and the energy reconstruction algorithm.To account for these effects,a full JUNO simulation and reconstruction approach is employed.This enables the modeling of all relevant effects and the evalu-ation of associated inputs to accurately estimate the energy resolution.The results of this study reveal an energy res-olution of 2.95％at 1 MeV.Furthermore,this study assesses the contribution of major effects to the overall energy resolution budget.This analysis serves as a reference for interpreting future measurements of energy resolution dur-ing JUNO data collection.Moreover,it provides a guideline for comprehending the energy resolution characteristics of liquid scintillator-based detectors.

energy resolutionliquid scintillator detectorJUNOsimulationreconstruction

Angel Abusleme、Thomas Adam、Kai Adamowicz、Shakeel Ahmad、Rizwan Ahmed、Sebastiano Aiello、安丰鹏、安琪、Giuseppe Andronico、Nikolay Anfimov

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Pontificia Universidad Católica de Chile,Santiago,Chile

Millennium Institute for SubAtomic Physics at the High-energy Frontier(SAPHIR),ANID,Chile

IPHC,Université de Strasbourg,CNRS/IN2P3,F-67037 Strasbourg,France

Ⅲ.Physikalisches Institut B,RWTH Aachen University,Aachen,Germany

Pakistan Institute of Nuclear Science and Technology,Islamabad,Pakistan

INFN Catania and Dipartimento di Fisica e Astronomia dell Università di Catania,Catania,Italy

Sun Yat-sen University,Guangzhou,China

University of Science and Technology of China,Hefei,China

Joint Institute for Nuclear Research,Dubna,Russia

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energy resolution liquid scintillator detector JUNO simulation reconstruction

2025

10.1088/1674-1137/ad83aa

中国物理C(英文版)
中国物理学会　中国科学院高能物理研究所　中国科学院近代物理研究所

中国物理C(英文版)

影响因子：0.347
ISSN：1674-1137
年,卷(期)：2025.49(1)