Neutrino Detectors: Present and Future

Wang, Yifang

doi:10.1016/j.phpro.2012.03.703

Cited by 6 publications

(1 citation statement)

References 19 publications

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“…The mean transit time spread (TTS) of the photoelectrons from the photocathode is 1.48 ns.20-inch Large area photomultiplier tubes (PMTs) with photon counting capability 1-6 are widely used in large scale neutrino and cosmic ray experiments. There are generally two types of large area PMTs: existing Dynode-PMTs and newly developed PMTs based on microchannel plate (MCP-PMTs) 6 which was developed for Jiangmen Underground Neutrino Observatory (JUNO) 7 . JUNO proposed in 2012 is a multipurpose neutrino experiment designed to determine neutrino mass hierarchy and precisely measure oscillation parameters by detecting reactor neutrinos from the Yangjiang and Taishan Nuclear Power Plants, observe supernova neutrinos, study the atmospheric, solar neutrinos and geo-neutrinos, and perform exotic searches.…”

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confidence: 99%

A new large area MCP-PMT for high energy detection

Chen,

Yang,

Wang

et al. 2023

Sci Rep

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Abstract20-inch Large area photomultiplier tube based on microchannel plate (MCP-PMT) is newly developed in China. It is widely used in high energy detection experiments such as Jiangmen Underground Neutrino Observatory (JUNO), China JinPing underground Laboratory (CJPL) and Large High Altitude Air Shower Observatory (LHAASO). To overcome the poor time performance of the existing MCP-PMT, a new design of large area MCP-PMT is proposed in this paper. Three-dimensional models are developed in CST Studio Suite to validate its feasibility. Effects of the size and bias voltage of the focusing electrodes and MCP configuration on the collection efficiency (CE) and time performance are studied in detail using the finite integral technique and Monte Carlo method. Based on the simulation results, the optimized operating and geometry parameters are chosen. Results show that the mean ratio of photoelectrons landing on the MCP active area is 97.5%. The acceptance fraction of the impinging photoelectrons is close to 100% due to the emission of multiple secondary electrons when hitting the MCP top surface. The mean transit time spread (TTS) of the photoelectrons from the photocathode is 1.48 ns.

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confidence: 99%