2013 Fiscal Year Final Research Report
R&D of the multipurpose detector using wavelength shifter and liquid xenon
| Project/Area Number |
24654055
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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 | Tohoku University |
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Principal Investigator |
UESHIMA Kota 東北大学, ニュートリノ科学研究センター, 助教 (80605379)
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| Project Period (FY) |
2012-04-01 – 2014-03-31
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| Keywords | 波長変換剤 / シンチレーション光 / 二重β崩壊探索 / 暗黒物質探索 |
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| Research Abstract |
The acrylic vessel evaporating the wavelength shifter in the inner surface was cooled down to -100 degree using liquid nitrogen and Novec7100 to fill the liquid xenon into the acrylic vessel. The xenon scintillation light caused by gamma ray was detected as the visible light by PMT after the liquid xenon filled into the acrylic vessel.
The scintillation light measurement system was developed to realize the low BG detector. The light yield more than 600p.e./MeV was achieved even though the PMT was kept 40 cm away from the acrylic vessel.
To reduce the surface BG of the detector, the new plastic scintillator was developed by dissolving TPB into the plastic scintillator.
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