江门中微子实验液体闪烁体配方初步研究
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- 英文论文题名：A Preliminary Study of Liquid Scintillator Recipe for JUNO
- 论文作者：叶星辰 ; 俞伯祥 ; 周莉 ; 周详 ; 丁雅韵 ; 方建 ; 杜冰 ; 陈海涛 ; 张烜 ; 胡维
- 英文论文作者：Xingchen Ye ; Boxiang Yu ; Li Zhou ; Xiang Zhou ; Yayun Ding ; Jian Fang ; Bing Du ; Haitao Chen ; Xuan Zhang ; Wei Hu ; Wuhan University ; State Key Laborratory of Particle Detection and Electronics ; Institute of High Energy Physics ; CAS ; Nanjing University of Aeronautics and Astronautics
- 年：2014
- 作者机构：武汉大学;核探测与核电子学国家重点实验室;中国科学院高能物理研究所;南京航空航天大学;
- 论文关键词：江门中微子实验 ; LS ; 光谱透过率 ; 光产额
- 会议召开时间：2014-08-13
- 会议录名称：第十七届全国核电子学与核探测技术学术年会论文集
- 语种：中文
- 分类号：TL812
- 学会代码：HDZX
- 会议名称：第十七届全国核电子学与核探测技术学术年会
- 会议地点：中国甘肃兰州
- 主办单位：中国电子学会、中国核学会核电子学与核探测技术分会
- 学会名称：中国电子学会核电子学与核探测技术分会
- 页数：6
- 文件大小：685k
- 原文格式：D
- 会议级别：全国
摘要
江门中微子实验将以LAB为溶剂、PPO为主要发光物质、bis‐MSB为波长位移剂制成液体闪烁体(LS)。为确定PPO和bis-MSB的浓度对液闪光学性能影响,本文通过对加只PPO的液闪和同时加PPO与bis-MSB的液闪的光透过率,测量液闪的光谱饱和吸收长度,确定了LS光产额实验中测量容器的大小。并且用Compton符合测量了液闪的相对光产额。实验中发现在大于光谱吸收长度的距离上,PPO浓度相关的相对光产额在3.0g/L之后趋于饱和。而在3.0g/L PPO基础上,掺入15mg/L bis-MSB已使液闪关于bis-MSB光产额达到饱和。同时,由于LAB的吸收截断谱在340nm,PPO的发射光谱在360nm左右,bis-MSB的发射谱在420nm左右。该光透过率实验通过对光谱改变的观测,还分别间接与直接地测量了PPO与bis-MSB的完全产生作用距离与浓度的关系。
The liquid scintillator of Jiangmen Neutrino Underground Observatory(JUNO) experiment consists of linear alkyl benzene(LAB) as the solvent, 2,5-diphenyloxazole(PPO) as the fluor, and p-bis-(o-methylstyryl)-benzene(bis-MSB) as the wave-length shifter. The work is to get the relationship between the light yield of LS and the concentration of PPO and bis-MSB. In order to determine the size of the LS vessel used in the light yield measurement, the transmission spectrums of LS are measured. The light yield was measured with the method of comptonscattering. The results show the light yield approaches saturation, when the concentration of PPO rises up to3.0g/L and 15mg/L Bis-MSB still is a good selection.
The liquid scintillator of Jiangmen Neutrino Underground Observatory(JUNO) experiment consists of linear alkyl benzene(LAB) as the solvent, 2,5-diphenyloxazole(PPO) as the fluor, and p-bis-(o-methylstyryl)-benzene(bis-MSB) as the wave-length shifter. The work is to get the relationship between the light yield of LS and the concentration of PPO and bis-MSB. In order to determine the size of the LS vessel used in the light yield measurement, the transmission spectrums of LS are measured. The light yield was measured with the method of comptonscattering. The results show the light yield approaches saturation, when the concentration of PPO rises up to3.0g/L and 15mg/L Bis-MSB still is a good selection.
引文
[1]M.C.Chen,Nuclear Physics B-Proceedings Supplements,2004,145:65-68
[2]Andreas G Piepke,S.Wayne Moser et al.,Nuclear Instruments and Methods in Physics Research Section A,1999,432:392-398
[3]G Alimonti et al.,Nuclear Instruments and Methods in Physics Research Section A,2000,440:360-371
[4]刘金昌et al.,高能物理与核物理,2007,31:76-79
[2]Andreas G Piepke,S.Wayne Moser et al.,Nuclear Instruments and Methods in Physics Research Section A,1999,432:392-398
[3]G Alimonti et al.,Nuclear Instruments and Methods in Physics Research Section A,2000,440:360-371
[4]刘金昌et al.,高能物理与核物理,2007,31:76-79