Separation of scintillation and Cherenkov lights in linear alkyl benzene

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• 作者：Mohan Li^a ; ^b ; Ziyi Guo^a ; ^b ; Minfang Yeh^c ; Zhe Wang^a ; ^b ; ^{wangzhe-hep@mail.tsinghua.edu.cn" class="auth_mail" title="E-mail the corresponding author} ; Shaomin Chen^a ; ^b
• 关键词：Cherenkov ; Scintillation ; Linear alkyl benzene ; Scintillation Cherenkov separation
• 刊名：Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
• 出版年：2016
• 出版时间：11 September 2016
• 年：2016
• 卷：830
• 期：Complete
• 页码：303-308
• 全文大小：1055 K

文摘

To separate scintillation and Cherenkov lights in water-based liquid scintillator detectors is a desired feature for future neutrino and proton decay experiments. Linear alkyl benzene (LAB) is one important ingredient of a water-based liquid scintillator currently under development. In this paper we report on the separation of scintillation and Cherenkov lights observed in an LAB sample. The rise and decay times of the scintillation light are measured to be (7.7±3.0)ns$(7.7\pm 3.0)\mathrm{ns}$ and (36.6±2.4)ns$(36.6\pm 2.4)\mathrm{ns}$, respectively, while the full width [−3σ, 3σ] of the Cherenkov light is 12 ns and is dominated by the time resolution of the photomultiplier tubes. The scintillation light yield was measured to be $(1.01\pm 0.12)\times {10}^3\mathrm{photons}/\mathrm{MeV}$.