Development of a scintillating fiber detector for a detailed understanding of the neutrino interactions

2016 Fiscal Year Final Research Report

• Project/Area Number: 26800134
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Particle/Nuclear/Cosmic ray/Astro physics
• Research Institution: Yokohama National University (2016); Kyoto University (2014-2015)
• Principal Investigator: Minamino Akihiro 横浜国立大学, 大学院工学研究院, 准教授 (70511674)
• Research Collaborator: YAMAMOTO Mika ; HIRAMOTO Ayami ; NAKAY Tsuyoshi ; ICHIKAWA Atsuko ; HAYASHINO Tatsuya ; NAKAMURA Kiseki ; MORI Masamitsu
• Project Period (FY): 2014-04-01 – 2017-03-31
• Keywords: ニュートリノ / ニュートリノ振動 / シンチレーションファイバー / 加速器 / MPPC / CP対称性の破れ / 前置ニュートリノ検出器

Outline of Final Research Achievements

The goal of this research is a performance confirmation of a scintillating fiber detector which enables us to detect all the charged particles around the neutrino interaction vertices to improve the sensitivities of the T2K experiment. The following three key features of the detector are confirmed by irradiating its prototype with the positron beam at ELPH, Tohoku University. (1) The detector has high detection efficiency and light yield for the minimum ionizing particles, so the particle identification can be performed using the light yield. (2) The attenuation length of the scintillation light in the fiber is longer than 2 m, so the meter-scale detector can be realized. (3) The high position resolution, 200 micro-meter, can be achieved for the minimum ionizing particles by using the light balance among the neighboring channels.

Free Research Field

素粒子物理学