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Light absorption properties of the high quality linear alkylbenzene for the JUNO experiment
Cao, DW; Zhang, R; Liu, YH; Loh, CW; Wang, W; Qian, ZQ; Yang, YZ; Wu, FL; Zhang, JL; Peng, X; Zhang, YF; Huang, AZ; Qi, M
2019
发表期刊NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT (IF:1.362[JCR-2016],1.211[5-Year])
卷号927
文章类型Article
摘要The Jiangmen Underground Neutrino Observatory (JUNO) is a 20 kton multi-purpose underground liquid scintillator detector designed to determine the neutrino mass hierarchy, and measure the neutrino oscillation parameters. The excellent energy resolution and the large fiducial volume anticipated for the JUNO detector offer exciting opportunities for addressing many important topics in neutrino and astro-particle physics. Linear alkylbenzene (LAB) will be used as the solvent for the liquid scintillation system in the central detector of JUNO. The light attenuation lengths of LAB should be comparable to the diameter of the JUNO detector, hence very good optical transparency is required. However, the presence of impurities in the LAB renders an intrinsic limit for the transparency. This work focuses on the study of the effects of organic impurities in the LAB, and their light absorption properties particularly in the wavelength region of 350-450 nm. We have prepared LAB samples and measured their light attenuation lengths. These samples were then analyzed by a gas chromatography-mass spectrometry (GC-MS), and the structure formulas of organic impurities were ascertained. These impurities' light-absorption properties in the wavelength region of 350-450 nm were theoretically investigated with time-dependent density functional theory (TDDFT). The overall optical transparency of the LAB samples was studied, which would further help us in promoting the LAB preparation technique for the mass production thereof, thus improving the transparency of the high quality LAB samples in the near future.
关键词Linear alkylbenzene Attenuation length Light absorption Organic impurities JUNO antineutrino experiment
DOI10.1016/j.nima.2019.01.077
收录类别ADS
语种英语
WOS记录号WOS:000462142700030
ADS Bibcode2019NIMPA.927..230C
ADS URLhttps://ui.adsabs.harvard.edu/abs/2019NIMPA.927..230C
ADS引文https://ui.adsabs.harvard.edu/abs/2019NIMPA.927..230C/citations
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被引频次:8 [ADS]
文献类型期刊论文
条目标识符https://ir.ihep.ac.cn/handle/311005/297551
专题江门中微子实验
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Cao, DW,Zhang, R,Liu, YH,et al. Light absorption properties of the high quality linear alkylbenzene for the JUNO experiment[J]. NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT,2019,927.
APA Cao, DW.,Zhang, R.,Liu, YH.,Loh, CW.,Wang, W.,...&Qi, M.(2019).Light absorption properties of the high quality linear alkylbenzene for the JUNO experiment.NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT,927.
MLA Cao, DW,et al."Light absorption properties of the high quality linear alkylbenzene for the JUNO experiment".NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT 927(2019).
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