A Monte Carlo method for Rayleigh scattering in liquid detectors

Miao Yu; Wenjie Wu; Yayun Ding; Qian Liu; Feng Ren; Zhenyu Zhang; Xiang Zhou

doi:10.1063/5.0119224

A Monte Carlo method for Rayleigh scattering in liquid detectors

Rev Sci Instrum. 2022 Nov 1;93(11):113102. doi: 10.1063/5.0119224.

Authors

Miao Yu¹, Wenjie Wu², Yayun Ding³, Qian Liu⁴, Feng Ren¹, Zhenyu Zhang¹, Xiang Zhou¹

Affiliations

¹ Hubei Nuclear Solid Physics Key Laboratory, School of Physics and Technology, Wuhan University, Wuhan, Hubei 430072, China.
² Department of Physics and Astronomy, University of California at Irvine, Irvine, California 92697, USA.
³ Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China.
⁴ School of Physics, University of Chinese Academy of Sciences, Beijing 100049, China.

PMID: 36461427
DOI: 10.1063/5.0119224

Abstract

A new Monte Carlo method has been implemented to describe the angular and polarization distributions of anisotropic liquids, such as water and linear alkylbenzene (LAB), by considering orientational fluctuations of polarizability tensors. The scattered light of anisotropic liquids is depolarized with an angular distribution of 1 + (1 - ρ_v)/(1 + 3ρ_v) cos² θ, which is modified by the depolarization ratio ρ_v. A standalone experiment has validated the simulation results of LAB. The new method can provide more accurate knowledge on light propagation in large liquid detectors, which is beneficial to the development of reconstruction for detectors.