Properties of new 50cm photodetectors in an environment for Hyper-Kamiokande

Daisuke Fukuda, Yasuhiro Nishimura, Ryosuke Akutsu, Yusuke Suda, Miao Jiang, Seiko Hirota, Yuji Okajima, Yusuke Koshio, Masayuki Nakahata, Masato Shiozawa, Yoshinari Hayato, Shoei Nakayama, Hidekazu Tanaka, Masashi Yokoyama, Tsuyoshi Nakaya, Akimichi Taketa, Yoshihiko Kawai, Takayuki Ohmura, Masatoshi Suzuki

Research output: Contribution to journalArticle

Abstract

Hyper-Kamiokande is a next generation large water Cherenkov detector proposed for search for proton decay and neutrino observations. A 50cm Box-and-Line dynode photomultiplier tube (B&L PMT), which exhibits excellent time and energy resolution, was newly developed for Hyper-Kamiokande. The performance of the B&L PMT was confirmed under anticipated conditions in Hyper-Kamiokande such as expected magnetic field levels, high voltages and temperature ranges. Furthermore, the uniformity of timing and collection efficiency was measured for consistency with design. Characteristics of dark rate and afterpulse were also evaluated in detail.

Original languageEnglish
Article number016
JournalProceedings of Science
Volume6-9-July-2015
Publication statusPublished - 2015

ASJC Scopus subject areas

  • General

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    Fukuda, D., Nishimura, Y., Akutsu, R., Suda, Y., Jiang, M., Hirota, S., Okajima, Y., Koshio, Y., Nakahata, M., Shiozawa, M., Hayato, Y., Nakayama, S., Tanaka, H., Yokoyama, M., Nakaya, T., Taketa, A., Kawai, Y., Ohmura, T., & Suzuki, M. (2015). Properties of new 50cm photodetectors in an environment for Hyper-Kamiokande. Proceedings of Science, 6-9-July-2015, [016].