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Study on the Resolution Change of Reconstructed Vertex due to the Operating Status of the PMTs in Neutrino Detector
New Phys.: Sae Mulli 2019; 69: 900~904
Published online September 30, 2019;
© 2019 New Physics: Sae Mulli.

Jun Hu SEO, Zohaib ATIF, Chang Dong SHIN*, Kyung Kwang JOO, Young Seo PARK

Department of Physics, Chonnam National University, Gwangju 61186, Korea
Correspondence to:
Received April 30, 2019; Revised June 6, 2019; Accepted June 17, 2019.
cc This is an open-access article distributed under the terms of the Creative Commons Attribution Non-Commercial License ( which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
The properties of neutrinos are not well known because they are weakly interacting with surrounding matter. Recently, studies on neutrinos have been actively conducted, and several results and interesting phenomena have been obtained. Various types of detectors for detecting neutrinos are used, but photomultiplier tubes (PMTs) are more generally used. In particular, a signal generated in each PMTs is used to reconstruct the position information of the neutrino incident on the detector. However, if the number of PMTs is decreased from the initial value, the performance of the PMTs and the operation efficiency may change over time, which may affect the information on the reconstructed position of the incident neutrino. This, in turn, has a direct impact on the results that utilize the reconstructed vertex information. This paper describes in brief the dependence of the resolution of the reconstructed vertex on the operating status of the PMT in the reactor neutrino detector. The Monte Carlo simulation technique was designed based on the cylindrical liquid-scintillating-detector model.
PACS numbers: 13.15.+g, 29.40.Mc
Keywords: Neutrino, Liquid scintillator, Photomultiplier tube, Vertex reconstruction, Charge weighting method

September 2019, 69 (9)
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