Application of Silicon Photomultipliers to Compton-scattering-type Polarimeters for Gamma Ray Bursts

Y. Saito, S. Gunji, T. Nakamori, T. Mihara, D. Yonetoku, T. Sawano, S. Kurosawa, S. Kodaira, J. Gaskin

研究成果: Conference contribution

抄録

Gamma-ray bursts (GRBs) are the most energetic phenomena in the universe. To elucidate the radiation mechanism of GRBs, we are developing a Compton-scattering-type polarimeter using a plastic scintillator and CsI(Tl) scintillator attached to a silicon photomultiplier (SiPM). We constructed a small test model and investigated the basic performance. Moreover, irradiating the SiPM with protons, the radiation hardness has been also investigated. From these experiments, we have recognized that the Compton-scattering-type polarimeter will obtain the sensitivity to the energy above approximately 30 keV if the radiation damage to the SiPM is not serious. On the other hand, the dark current of the SiPM becomes several thousand times higher for a few krad of irradiation and can be accumulated in the space environment in a few years. This means that the polarimeter will work well in balloon-borne experiments for a few weeks.

本文言語English
ホスト出版物のタイトル2018 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2018 - Proceedings
出版社Institute of Electrical and Electronics Engineers Inc.
ISBN(電子版)9781538684948
DOI
出版ステータスPublished - 2018 11
外部発表はい
イベント2018 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2018 - Sydney, Australia
継続期間: 2018 11 102018 11 17

出版物シリーズ

名前2018 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2018 - Proceedings

Conference

Conference2018 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2018
国/地域Australia
CitySydney
Period18/11/1018/11/17

ASJC Scopus subject areas

  • 放射線学、核医学およびイメージング
  • 核物理学および高エネルギー物理学

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