Hybrid Photo Detector as the Ashra trigger sensor

Y. Aita, T. Aoki, Y. Asaoka, T. Browder, T. Chonan, S. Dye, M. Eguchi, R. Fox, J. Hamilton, Y. Higashi, T. Kimura, N. Kohta, H. Kuze, J. Learned, M. Masuda, S. Matsuno, Y. Morimoto, K. Noda, S. Ogawa, A. OkumuraS. Olsen, M. Sasaki, H. Shibuya, K. Shinomiya, N. Sugiyama, Y. Yamaguchi, M. Yasuda, G. Varner, Y. Watanabe, Y. Watanabe

Research output: Contribution to conferencePaper


We have developed a Hybrid Photo Detector (HPD) for the Ashra detector. The HPD consists of a 6-inch electron tube and a multi-pixel silicon detector followed by trigger decision LSI circuits. The advanced features of the silicon detector are as follows: 1. high resolution with 64 × 64 channels using bump bonding technique 2. high gain due to a thin dead layer and a large effective area 3. fast response due to electron collection. We report the designs and performance of the HPD in this contribution.

Original languageEnglish
Number of pages4
Publication statusPublished - 2007 Jan 1
Externally publishedYes
Event30th International Cosmic Ray Conference, ICRC 2007 - Merida, Yucatan, Mexico
Duration: 2007 Jul 32007 Jul 11


Other30th International Cosmic Ray Conference, ICRC 2007
CityMerida, Yucatan

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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  • Cite this

    Aita, Y., Aoki, T., Asaoka, Y., Browder, T., Chonan, T., Dye, S., Eguchi, M., Fox, R., Hamilton, J., Higashi, Y., Kimura, T., Kohta, N., Kuze, H., Learned, J., Masuda, M., Matsuno, S., Morimoto, Y., Noda, K., Ogawa, S., ... Watanabe, Y. (2007). Hybrid Photo Detector as the Ashra trigger sensor. 1571-1574. Paper presented at 30th International Cosmic Ray Conference, ICRC 2007, Merida, Yucatan, Mexico.