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A study of the new hemispherical 9-inch PMT

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arxiv 1801.02737 v1 pith:QHT36X4F submitted 2018-01-09 physics.ins-det hep-ex

Fengjiao Luo , Yuekun Heng , Zhimin Wang , Zhonghua Qina , Anbo Yang , Nan Li , Gang Wang , Yan Zhang
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Zhiyan Cai Mengzhao Li Haiqiong Zhang Meihang Xu Zhi Wu Yuanbo Chen
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classification physics.ins-dethep-ex
keywords beenhemisphericalinchpmtsstudiedaccompaniedchinadeployed
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The new hemispherical photomultiplier tubes (PMTs) with 9 inch diameter from Hainan Zhanchuang Photonics Technology Co.,Ltd (HZC) have been studied. Narrow transit time spread (FWHM=2.35 ns) accompanied by small nonlinearity (750 photoelectrons at 5%) and high gain (1E7 ) with good single photoelectron (PE) resolution have been observed. 11 PMTs of this type are deployed and studied in the prototype detector for JUNO at IHEP, China.

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