2011 Fiscal Year Final Research Report
Development of novel superconducting detectors for a measurement of neutrino mass using tritium beta decays
| Project/Area Number |
22654028
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Single-year Grants |
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| Research Field |
Particle/Nuclear/Cosmic ray/Astro physics
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| Research Institution | Okayama University |
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Principal Investigator |
ISHINO Hirokazu 岡山大学, 大学院・自然科学研究科, 准教授 (90323782)
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| Co-Investigator(Renkei-kenkyūsha) |
SHIMIZU Hirohiko 高エネルギー加速器研究機構, 素粒子原子核研究所, 教授 (50249900)
HAZUMI Masashi 高エネルギー加速器研究機構, 素粒子原子核研究所, 教授 (20263197)
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| Project Period (FY) |
2010 – 2011
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| Keywords | 超伝導検出器 / ニュートリノ / MKID |
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| Research Abstract |
We have developed MKIDs(Microwave Kinetic Inductance Detectors) to make accurate measurements of energy deposited by the beta rays and recoil nuclei in tritium decays. We first fabricated microstrip MKIDs which have large acceptance, but they are found not to satisfy our requirements. With intensive studies, we have identified the cause as the dielectric loss in the insulator layer made of SiO_2, Al_2O_3, etc. We then developed CPW(coplanar waveguide) type MKIDs, which have shown good performance. We confirmed a visible light response of the MKIDs.
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