Preliminary study of light yield dependence on LAB liquid scintillator composition

Liquid scintillator （LS） will be adopted as the detector material in JUNO （Jiangmen Underground Neutrino Observatory）. The energy resolution requirement of JUNO is 3%, which has never previously been reached. To achieve this energy resolution, the light yield of liquid scintillator is an important f...

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Published inChinese physics C Vol. 39; no. 9; pp. 79 - 82
Main Author 叶星辰 俞伯祥 周详 赵力 丁雅韵 刘梦超 丁雪峰 张烜 揭泉林 周莉 方建 陈海涛 胡维 牛顺利 颜嘉庆 赵航 洪道金
Format Journal Article
LanguageEnglish
Published 01.09.2015
Subjects
Energy resolution
Liquids
Photons
Polyphenylene oxides
Quartz
Two materials
Underground
Wavelengths
产量试验
体成分
多酚氧化酶
实验室
探测器材料
波长转换器
液体闪烁体
能量分辨率
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ISSN1674-1137
0254-3052
DOI10.1088/1674-1137/39/9/096003

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Summary:Liquid scintillator （LS） will be adopted as the detector material in JUNO （Jiangmen Underground Neutrino Observatory）. The energy resolution requirement of JUNO is 3%, which has never previously been reached. To achieve this energy resolution, the light yield of liquid scintillator is an important factor. PPO （the fluor） and bis-MSB （the wavelength shifter） are the two main materials dissolved in LAB. To study the influence of these two materials on the transmission of scintillation photons in LS, 25 and 12 cm-long quartz vessels were used in a light yield experiment. LS samples with different concentration of PPO and bis-MSB were tested. At these lengths, the light yield growth is not obvious when the concentration of PPO is higher than 4 g/L. The influence from bis-MSB becomes insignificant when its concentration is higher than 8 mg/L. This result could provide some useful suggestions for the JUNO LS.
Bibliography:liquid scintillator, JUNO, PPO, bis-MSB, LAB
Liquid scintillator （LS） will be adopted as the detector material in JUNO （Jiangmen Underground Neutrino Observatory）. The energy resolution requirement of JUNO is 3%, which has never previously been reached. To achieve this energy resolution, the light yield of liquid scintillator is an important factor. PPO （the fluor） and bis-MSB （the wavelength shifter） are the two main materials dissolved in LAB. To study the influence of these two materials on the transmission of scintillation photons in LS, 25 and 12 cm-long quartz vessels were used in a light yield experiment. LS samples with different concentration of PPO and bis-MSB were tested. At these lengths, the light yield growth is not obvious when the concentration of PPO is higher than 4 g/L. The influence from bis-MSB becomes insignificant when its concentration is higher than 8 mg/L. This result could provide some useful suggestions for the JUNO LS.
11-5641/O4
YE Xing-Chen, YU Bo-Xiang, ZHOU Xiang, ZHAO Li,DING Ya-Yun, LIU Meng-Chao, DING Xue-Feng, ZHANG Xuan,JIE Quan-Lin, ZHOU Li, FANG Jian,CHEN Hai-Tao, HU Wei,NIU Shun-Li, YAN Jia-Qing, ZHAO Hang,HONG Dao-Jin（1 Hubei Nuclear Solid Physics Key Laboratory, Key Laboratory of Artificial Micro- and Nano-structures of Ministry of Education, and School of Physics and Technology, Wuhan University, Wuhan 430072, China; 2 State Key Laboratory of Particle Detection and Electronics, Beijing 100049, China ; 3 Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China ; 4 Nuclear and Radiation Safety Center, Beijing 100049, China）
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ISSN:1674-1137
0254-3052
DOI:10.1088/1674-1137/39/9/096003