PoS - Proceedings of Science
Volume 390 - 40th International Conference on High Energy physics (ICHEP2020) - Parallel: Operation, Performance and Upgrade of Present Detectors
The mass production and batch test result of the 15K 20-inch MCP-PMT in NNVT for JUNO
S. Qian,* W. Qi
*corresponding author
Full text: Not available
Abstract
The Jiangmen Underground Neutrino Observatory (JUNO) in China aiming to determine the neutrino mass hierarchy is under construction and the 15,000 MCP-PMTs produced in NNVT which will be installed as the central liquid scintillator detector of JUNO have been completed and delivered by August of 2020. During the mass production process, breakthrough of the photocathode technology greatly improved the quantum efficiency (QE) of the MCP-PMT from 30% to 35% and so is the detection efficiency (DE). The performance of other parameters keeps steady during the mass production process of 15,000 MCP-PMTs. The average QE at 400nm for the 15,000 pieces of MCP-PMTs is 32%. With a layer of high-SEY material deposited on the MCP, the collection efficiency can reach nearly 100% and the average DE at 400nm for the 15K pieces of MCP-PMTs is 31.5%.
How to cite

Metadata are provided both in "article" format (very similar to INSPIRE) as this helps creating very compact bibliographies which can be beneficial to authors and readers, and in "proceeding" format which is more detailed and complete.

Open Access
Creative Commons LicenseCopyright owned by the author(s) under the term of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.