New large aperture, hybrid photo-detector and photo multiplier tube for a gigantic water Cherenkov ring imaging detector
We are developing a 20-in. aperture high quantum efficiency photo-multiplier tube (PMT) and a hybrid photo-detector (HPD) for Hyper-Kamiokande which is a next generation underground large water Cherenkov detector. We have measured prototypes of 20-in. PMT with a high quantum efficiency photocathode,...
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| Veröffentlicht in: | Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment Accelerators, spectrometers, detectors and associated equipment, 2014-12, Vol.766, p.152-155 |
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| container_title | Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment |
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| creator | Hirota, Seiko Nishimura, Yasuhiro Suda, Yusuke Okajima, Yuji Shiozawa, Masato Nakayama, Shoei Tanaka, Hidekazu Hayato, Yoshinari Ikeda, Motoyasu Nakahata, Masayuki Yokoyama, Masashi Aihara, Hiroaki Ichikawa, Atsuko Minamino, Akihiro Huang, Kunxian Nakaya, Tsuyoshi Kawai, Yoshihiko Suzuki, Masatoshi Ohmura, Takayuki |
| description | We are developing a 20-in. aperture high quantum efficiency photo-multiplier tube (PMT) and a hybrid photo-detector (HPD) for Hyper-Kamiokande which is a next generation underground large water Cherenkov detector. We have measured prototypes of 20-in. PMT with a high quantum efficiency photocathode, 30% at 400 nm, and 8-in. HPDs with a normal quantum efficiency photocathode, 22% at 400 nm, in a 200-ton water tank and checked their performance. The PMTs have a 2.7 ns (sigma) timing resolution and 43% (sigma) charge resolution for single photo-electron. Compared to PMTs, HPDs show a better performance with a 1.7 ns timing resolution and 32. |
| doi_str_mv | 10.1016/j.nima.2014.06.010 |
| format | Article |
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| subjects | Accelerators Apertures Photocathodes Quantum efficiency Time measurements Tubes Underground Water tanks |
| title | New large aperture, hybrid photo-detector and photo multiplier tube for a gigantic water Cherenkov ring imaging detector |
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