| Project/Area Number |
26610068
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Particle/Nuclear/Cosmic ray/Astro physics
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| Research Institution | Nagoya University |
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Principal Investigator |
Matsuoka Kodai 名古屋大学, 現象解析研究センター, 特任准教授 (70623403)
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| Project Period (FY) |
2014-04-01 – 2017-03-31
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| Project Status |
Completed (Fiscal Year 2016)
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| Budget Amount *help |
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2015: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2014: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
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| Keywords | ニュートリノレス二重ベータ崩壊 / チェレンコフ検出器 / ベータ線 |
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| Outline of Final Research Achievements |
To search for neutrino-less double beta decays, I proposed a new technique to reconstruct the beta-ray kinetic energy by means of velocity measurement with a Cherenkov detector. The first idea was that the velocity was deduced from the Cherenkov ring image. In a Monte Carlo simulation, the energy resolution and efficiency for a 1.5 MeV beta-ray were estimated to be about 10% (FWHM) and 20%, respectively. To improve the performance, I invented another new technique that measured the time-of-flight of the beta-ray to deduce the velocity. The expected energy resolution and efficiency for a 1.26 MeV beta-ray were improved to be about 13% (FWHM) and 44%, respectively.
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