期刊
REVIEW OF SCIENTIFIC INSTRUMENTS
卷 90, 期 4, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.5063825
关键词
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资金
- U.S. Department of Energy, Office of Science, Office of High Energy Physics [DE-AC02-06CH11357]
- U.S. Department of Energy, Office of Science, SBIR and STTR Programs Office [DE-SC0018445]
- U.S. Department of Energy (DOE) [DE-SC0018445] Funding Source: U.S. Department of Energy (DOE)
We report a detailed design, fabrication, and characterization of 6 x 6 cm(2) fast timing photodetectors based on next-generation microchannel plates (MCPs). The whole assembly is made of low-cost borosilicate glass materials and hermetically sealed with a bialkali photocathode in a vacuum. The flexible photodetector design provides the potential of modifying individual components as well as the entire configuration to fit for different applications. A series of prototype MCP-photodetectors were fabricated following a step-by-step process including functionalization of glass capillary array through atomic layer deposition, MCP baking and scrubbing, photocathode deposition, and hermetic thermo-compression sealing. The prototype MCP-photodetectors exhibit electron gains well beyond 107 level with good relative uniformity. An excellent rise time of 439 ps, timing distribution root-mean-square at a single photoelectron mode of 105 ps, a timing resolution of 20 ps, and magnetic field tolerance up to 1.3 T were achieved for a photodetector with 10 mu m pore size MCPs, comparing to that of 536 ps, 205 ps, 63 ps, and 0.7 T for the one with 20 mu m pore size MCPs. Published under license by AIP Publishing.
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