Angular Response of Photomultiplier Tubes: Photon-to-Electron Conversion Efficiency and Reflectance
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概要
- 論文の詳細を見る
Reflectance and photon-to-electron conversion efficiency have been measured for photomultiplier tubes (PMTs; Hamamatsu R878 and 7696) using three-color light-emitting diode (LED) emitting photons with central wavelengths of 470, 525, and 640 nm. The use of a light guide with a refractive index similar to that of a photomultiplier window enabled the measurement at the angle of incidence to a photocathode up to 75°. An appreciably large reflectance and conversion efficiency were obtained at the angles of approximately 45 and 60°, respectively. It was shown that these PMTs work with a higher photon-to-electron conversion efficiency than the quantum efficiency given by the manufacturer in many cases of scintillation counting. The reflectance measured in this study is consistent with that calculated using an optical model, where the photocathode was a thin film with a complex refractive index.
- Published by the Japan Society of Applied Physics through the Institute of Pure and Applied Physicsの論文
- 2006-07-15
著者
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TAWARA Hiroko
High Energy Accelerator Research Organization
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Shibamura Eido
School Of Health And Social Services Saitama Prefectural University
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Miyajima Mitsuhiro
Advanced Research Center For Science And Engineering Waseda University
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SASAKI Shinichi
High Energy Accelerator Research Organization
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SAITO Kiwamu
High Energy Accelerator Research Organization
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Saito Kiwamu
High Energy Accelerator Research Organization, 1-1 Oho, Tsukuba, Ibaraki 305-0801, Japan
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Shibamura Eido
School of Health and Social Services, Saitama Prefectural University, 820 Sannomiya, Koshigaya, Saitama 343-8540, Japan
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Tawara Hiroko
High Energy Accelerator Research Organization, 1-1 Oho, Tsukuba, Ibaraki 305-0801, Japan
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Miyajima Mitsuhiro
Advanced Research Center for Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku, Tokyo 169-8555, Japan
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