Yasuharu Negi
Hamamatsu Photonics
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Publication
Featured researches published by Yasuharu Negi.
Proceedings of SPIE | 2011
A. Fukasawa; Akifumi Kamiya; Shinichi Muramatsu; Yasuharu Negi; Motohiro Suyama
We have developed a new Hybrid Photo-Detector (HPD) with relatively large effective area, fast time response, high timing resolution, high quantum efficiency and extremely low probability of afterpulse. A GaAsP (Gallium Arsenide Phosphide) photocathode type has high quantum efficiency approximately 45% around the wavelength of 500 nm, and the size of the effective area is 3 mm in diameter. The pulse height for single photon is approximately +2 mV with 50 ohm load impedance, and it can be easily observed with a fast response oscilloscope. The rise and fall times for impulse light are approximately 0.4 ns. The timing resolution for single photon for the GaAsP photocathode type was estimated to be approximately 80 ps.
Archive | 1994
Minoru Niigaki; Katsuyuki Kinoshita; Toru Hirohata; Tuneo Ihara; Masami Yamada; Norio Asakura; Yasuharu Negi; Tomoko Suzuki
Archive | 1992
Minoru Nigaki; Tuneo Ihara; Toru Hirohata; Tomoko Suzuki; Kimitsugu Nakamura; Norio Asakura; Masami Yamada; Yasuharu Negi; Tomihiko Kuroyanagi; Yoshihiko Mizushima
Archive | 1991
Minoru Aragaki; Norio Asakura; Toru Hirohata; Tsuneo Ihara; Tomihiko Kuroyanagi; Yoshihiko Mizushima; Koji Nakamura; Yasuharu Negi; Tomoko Suzuki; Masami Yamada
Archive | 1998
Yasuharu Negi; Norio Asakura; Motohiro Suyama; Toshimitsu Nagai
Archive | 2003
Yasuharu Negi; Yasuyuki Egawa; Toru Hirohata; Minoru Niigaki
Archive | 2004
Motohiro Suyama; Hiroyuki Kyushima; Suenori Kimura; Yasuharu Negi; A. Fukasawa; Yoshihiko Kawai; Atsushi Uchiyama; Yasuyuki Egawa
Archive | 2004
Hiroyuki Kyushima; Motohiro Suyama; Suenori Kimura; Yasuharu Negi; Yoshihiko Kawai; A. Fukasawa
Archive | 2004
Hiroyuki Kyushima; Motohiro Suyama; Suenori Kimura; Yasuharu Negi; Yoshihiko Kawai; A. Fukasawa
Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment | 2017
A. Fukasawa; Y. Hotta; Tomohiro Ishizu; Yasuharu Negi; G. Nakano; S. Ichikawa; T. Nagasawa; Yasuyuki Egawa; Akihiro Kageyama; I. Adachi; G. C. Barbarino; F.C.T. Barbato; L. Campajola; R. de Asmundis; F. Di Capua; C.M. Mollo; E. Nocerino; D. Vivolo; P. Migliozzi; G. De Rosa
