Influencing factors of time resolution for LPMT for JUNO
| Autor: | Sen Qian, Yiqi Cao, Guorui Huang, Liao Jin, Muchun Jin, Zhen Jin, Dong Li, Kun Li, Shulin Liu, Lishuang Ma, Ling Ren, Shuguang Si, Jianning Sun, Xingchao Wang, Qi Wu, Haoda Zhan, Yao Zhu |
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| Rok vydání: | 2022 |
| Předmět: | |
| Zdroj: | Journal of Physics: Conference Series. 2374:012124 |
| ISSN: | 1742-6596 1742-6588 |
| DOI: | 10.1088/1742-6596/2374/1/012124 |
| Popis: | Large area PMTs (LPMT) are widely used in neutrino experiments and cosmic ray detection. To meet the performance requirements for Jiangmen Underground Neutrino Observatory (JUNO), researchers at IHEP developed 20-inch MCP-PMTs which provide higher collection efficiency at a lower cost. 15k 20-inch PMTs produced by North Night Vision Technology Co., Ltd. (NNVT) has been delivered to Jiangmen and are to be installed as the central liquid scintillator detector of JUNO. Compared with prototype, though the collection efficiency (CE) and the quantum efficiency (QE) of the 15k MCP-PMTs get improved, the time performance gets worse. In this manuscript, the reasons for the deterioration of time resolution of the 15k MCP-PMTs are explored from several aspects. The optimized structure with great TTS of less than 5 ns is also introduced. |
| Databáze: | OpenAIRE |
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