MPPC based scintillation counters for the internal photon tagger

Hiroki Kanda, Yuya Akazawa, Yu Fujii, Ryotaro Honda, Masashi Kaneta, Yuma Kasai, Junichiro Kusaka, Kazushige Maeda, Koji Miwa, Sho Nagao, Satoshi N. Nakamura, Takashi Nishizawa, Kyo Tsukada, Fumiya Yamamoto

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We developed scintillation counters with Multi-Pixel-Photon-Counters (MPPC's) for an electron detector of a photon tagging system. They were compact, tolerant to a magnetic field, rate tolerant up to 170 kHz and had a good time resolution. These properties were suitable for the electron detector which was placed in a limited space of a bending magnet of an electron synchrotron. The scintillation counters were used for the measurement of the timing of the passage of the post-bremsstrahlung electrons, and the definition of their orbits by the hit positions on the counters to measure their momenta. We prepared two kinds of scintillation counter, one is for finer granularity named as a TagF and the other for the timing measurement named as a TagB. We performed an experiment to measure the properties of the counter unit using an electron beam with the energy of 855 MeV. We obtained the timing resolution of the TagB to be less than 80 ps (σ) almost independent of the hit rate in the range of 25 kHz to 170 kHz. Its gain decrease at the rate of 170 kHz was ∼ 5% of the gain at the rate of 25 kHz. These properties satisfied our requirements for the electron detector. The whole electron detector consisting of the counter units are currently being designed.

Original languageEnglish
Title of host publication2013 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2013
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Print)9781479905348
DOIs
Publication statusPublished - 2013 Jan 1
Event2013 60th IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2013 - Seoul, Korea, Republic of
Duration: 2013 Oct 272013 Nov 2

Publication series

NameIEEE Nuclear Science Symposium Conference Record
ISSN (Print)1095-7863

Other

Other2013 60th IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2013
CountryKorea, Republic of
CitySeoul
Period13/10/2713/11/2

ASJC Scopus subject areas

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

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