Characterization of 3-inch photomultiplier tubes for the JUNO central detector

Characterization of 3-inch photomultiplier tubes for the JUNO central detector
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JUNO 中央探测器 3 英寸光电倍增管的表征

DOI:
10.1007/s41605-018-0085-8
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发表时间:
2018-11
影响因子:
0.6
通讯作者:
Liu Shulin
Liu Shulin
中科院分区:
--
文献类型:
--
作者:
Li Nan;Heng Yuekun;He Miao;Xu Jilei;Zhang Xuantong;Cao Chuanya;Wu Zhi;Luo Fengjiao;Wang Zhimin;Yang Xiaoyu;Xu Meihang;Qin Zhonghua;Yang Yuzhen;Yan Baojun;Liu Shulin

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江门地下中微子观测站(JUNO)是目前世界上最大的中微子探测实验设施之一。作为其主要结构,中心探测器包含填充在丙烯酸外壳中的20千吨液体闪烁体,外壳上覆盖着18,000个20英寸光电倍增管(PMT)和25,000个3英寸光电倍增管。研究目的作为独立的光子探测系统,3英寸光电倍增管需要具有良好的单光子探测分辨率、高量子效率、小渡越时间扩展和低暗噪声率。方法以HZC Photonics和Hamamatsu公司的两种3英寸光电倍增管为候选器件。设计了一套3英寸光电倍增管专用测试系统,并对各种表征参数进行了研究。结论初步结果表明,所研制的光电倍增管符合JUNO的要求。
Background Jiangmen Underground Neutrino Observation (JUNO) is one of the largest experimental facilities for neutrino detecting. As its main structure, the central detector contains 20 kiloton liquid scintillator filled in an acrylic shell, and there are 18,000 20-inch photomultiplier tubes (PMTs) and 25,000 3-inch PMTs covering the shell. Purpose As an independent photon detection system, 3-inch PMTs have been required to have excellent resolution for the single photoelectron detection, high quantum efficiency, small transit time spread and low dark noise rate. Methods Two kinds of 3-inch PMTs from HZC Photonics and Hamamatsu have been investigated as candidates. A dedicated test system for 3-inch PMTs has been designed, and various characterization parameters have been studied. Conclusion The preliminary results show these PMTs can meet the requirements of JUNO.
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