Development of Fiber Cherenkov Counters

2014 Fiscal Year Final Research Report

• Project/Area Number: 26610057
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Particle/Nuclear/Cosmic ray/Astro physics
• Research Institution: Chiba University
• Principal Investigator: KAWAI Hideyuki 千葉大学, 理学(系)研究科(研究院), 准教授 (60214590)
• Project Period (FY): 2014-04-01 – 2015-03-31
• Keywords: 放射線測定器 / 粒子識別装置 / チェレンコフカウンター / 光ファイバー / しきい値型 / 伝播時間測定

Outline of Final Research Achievements

Particle identification detectors are essencially needed in elementary particle experiments. The TOF (Time of Flight) measurements are effective in low energy region but they aer not effective in high energy region in which the velocities of charged particles are higher than 0.99c. Only the Cherenkov counters have enough PID efficiencies in such high energy region. We have developped two types of new Cherenkov counters with clear light fibers for radiator. One is a threshold type, and the other is a propergation time measurement type. We have measured the particle identification efficiencies with positron beam at Research Center of Electron Photon Science, Tohoku University. The PID efficiency for TOP detector is not enough but that for threshold type detector is still enough.

Free Research Field

素粒子実験