Development of a multi-pixel hybrid photodetector with high quantum efficiency and gain

M. Suyama, A. Fukasawa, J. Haba, T. Iijima, S. Iwata, M. Sakuda, T. Sumiyoshi, F. Takasaki, M. Tanaka, T. Tsuboyama, Y. Yamada

Research output: Contribution to journalConference articlepeer-review


A hybrid photo-detector (HPD) consisting of a photocathode and a multi-pixel avalanche diode (MP-AD) has been developed for these years. One of the features of the HPD is a good energy resolution, and it was shown in our previous study that the further improvement would be possible by reducing the fluctuation of charge loss in the dead layer at the entrance of the MP-AD. hi this paper, we report on the result of the improvement with the newly developed HPD whose MP-AD encapsulated has a thinner dead layer than before. It is demonstrated that the new HPD has a much better energy resolution which enables the clear counting up to nine photoelectrons. Other features like a uniformity among the pixels or a photocathode sensitivity of the HPD are also presented.

Original languageEnglish
Article numberN36-105
Pages (from-to)1418-1421
Number of pages4
JournalIEEE Nuclear Science Symposium Conference Record
Publication statusPublished - 2003
Externally publishedYes
Event2003 IEEE Nuclear Science Symposium Conference Record - Nuclear Science Symposium, Medical Imaging Conference - Portland, OR, United States
Duration: Oct 19 2003Oct 25 2003

ASJC Scopus subject areas

  • Radiation
  • Nuclear and High Energy Physics
  • Radiology Nuclear Medicine and imaging


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