Study of Double Beta Decay with High Light-Concentrating Liquid Scintillator Detector
Project/Area Number |
23684012
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Research Category |
Grant-in-Aid for Young Scientists (A)
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Allocation Type | Single-year Grants |
Research Field |
Particle/Nuclear/Cosmic ray/Astro physics
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Research Institution | Tohoku University |
Principal Investigator |
SHIMIZU Itaru 東北大学, ニュートリノ科学研究センター, 助教 (10400227)
|
Project Period (FY) |
2011-04-01 – 2015-03-31
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Project Status |
Completed (Fiscal Year 2014)
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Budget Amount *help |
¥27,690,000 (Direct Cost: ¥21,300,000、Indirect Cost: ¥6,390,000)
Fiscal Year 2014: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2013: ¥7,670,000 (Direct Cost: ¥5,900,000、Indirect Cost: ¥1,770,000)
Fiscal Year 2012: ¥12,090,000 (Direct Cost: ¥9,300,000、Indirect Cost: ¥2,790,000)
Fiscal Year 2011: ¥5,850,000 (Direct Cost: ¥4,500,000、Indirect Cost: ¥1,350,000)
|
Keywords | ニュートリノ / 素粒子実験 / 実験核物理 |
Outline of Final Research Achievements |
The development of devices highly sensitive to neutrino-less double-beta decays using isotopically enriched xenon was performed. The specially-shaped light-concentrating mirrors for the large volume liquid scintillator detector (KamLAND) were produced from aluminum metalizing PET film, and the increase of light collection efficiencies for scintillation light coming from distant points was confirmed. In addition, the purification by distillation and adsorption to enhance the optical performance of linear-alkylbenzene-based liquid scintillator was performed, resulting in better performance than the original liquid scintillator in use. The present study allows us to suggest a specific plan to test the inverted hierarchy neutrino masses by the neutrino-less double-beta decay experiment.
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Report
(5 results)
Research Products
(39 results)
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[Presentation] 4世代ニュートリノ
Author(s)
清水格
Organizer
極低バックグラウンド素粒子原子核研究懇談会
Place of Presentation
富山商工会議所(富山市)
Related Report
Invited
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