InP solid state detector and the observation of low energy solar neutrinos

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概要

• 論文の詳細を見る

• A large volume radiation detectors using a semi-insulating Indium Phosphide (InP) wafer have been developed for Indium Project on Neutrino Observation for Solar interior (IPNOS) experiment. The volume has achieved to 20mm3 , and this is world largest size among the detector observed gammas at hundred keV region. Although the depletion layer, most of charge are generated by an induction, and the charge collection efficiency achieves 50 to 60%, which is determined by the detector thickness and the carrier drift length (Ld = 120μm). The energy resolution is obtained by 25%. We measured actual backgrounds from 115 In beta decay, and also the effect of radiative Bremsstrahlung from those betas. No significant event was found in the measurement and the radiation such as Bremsstrahlung from InP detector could be negligible.

著者

• T. Izawa

  Solid State Devision Hamamatsu Photonics K.k.

• Y. Fukuda

  Faculty of Education, Miyagi University of Education

• Y. Koshio

  Kamioka Observatory, Institute for Cosmic Ray Research, University of Tokyo

• S. Moriyama

  Kamioka Observatory, Institute for Cosmic Ray Research, University of Tokyo

• M. Shiozawa

  Kamioka Observatory, Institute for Cosmic Ray Research, University of Tokyo

• T. Namba

  ICEPP, International Center for Elementary Particle Physics, University of Tokyo

• Y. Koshio

  Kamioka Observatory Institute For Cosmic Ray Research University Of Tokyo

• M. Shiozawa

  Kamioka Observatory Institute For Cosmic Ray Research University Of Tokyo

• S. Moriyama

  Kamioka Observatory Institute For Cosmic Ray Research University Of Tokyo

• T. Namba

  Icepp International Center For Elementary Particle Physics University Of Tokyo

• M Shiozawa

  Kamioka Observatory, Institute for Cosmic Ray Research, University of Tokyo

• S Moriyama

  Kamioka Observatory, Institute for Cosmic Ray Research, University of Tokyo

• T Namba

  ICEPP, International Center for Elementary Particle Physics, University of Tokyo

• Fukuda Y.

  Faculty of Education, Miyagi University of Education

• Izawa T.

  Solid State Devision, Hamamatsu Photonics K.K.

• Koshio Y.

  Kamioka Observatory, Institute for Cosmic Ray Research, University of Tokyo

関連論文

• InP solid state detector and the observation of low energy solar neutrinos

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