A universal energy response model for determining the energy nonlinearity and resolution of and in liquid scintillator detectors

Miao Yu; Liangjian Wen; Xiang Zhou; Wuming Luo

doi:10.1140/epjc/s10052-023-11541-8

2024 Impact factor 4.8

Particles and Fields

Open Access

Eur. Phys. J. C (2023) 83: 403
https://doi.org/10.1140/epjc/s10052-023-11541-8

Regular Article - Experimental Physics

A universal energy response model for determining the energy nonlinearity and resolution of $e^{\pm}$ $e^\pm$ and $γ$ $\gamma$ in liquid scintillator detectors

Miao Yu¹^,2^a, Liangjian Wen², Xiang Zhou¹ and Wuming Luo²

¹ School of Physics and Technology, Wuhan University, 430072, Wuhan, China
² Institute of High Energy Physics, Chinese Academy of Sciences, 100049, Beijing, China

^a miaoyu@whu.edu.cn

Received: 10 November 2022
Accepted: 21 April 2023
Published online: 13 May 2023

Abstract

Energy nonlinearity and resolution in liquid scintillator (LS) detectors are correlated and particle-dependent. A unified energy response model for liquid scintillator detectors has been presented in details. This model has advanced a data-driven approach to calibrate the particle-dependent energy response, using both the monoenergetic $γ$ $\gamma$ -ray sources and the continuous $β$ $\beta$ spectra of $^{12} B$ $^\textrm{12}\textrm{B}$ and Michel $e^{-}$ $$e^-$$ induced by cosmic muons. Monte Carlo studies have demonstrated the effectiveness and robustness of the proposed model, in particular, the positron energy resolution can be extracted in the absence of positron sources. This work will provide a feasible approach of simultaneous calibration of energy nonlinearity and resolution for the running and future LS detectors.

© The Author(s) 2023

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