| Budget Amount *help |
¥25,610,000 (Direct Cost: ¥19,700,000、Indirect Cost: ¥5,910,000)
Fiscal Year 2012: ¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2011: ¥10,660,000 (Direct Cost: ¥8,200,000、Indirect Cost: ¥2,460,000)
Fiscal Year 2010: ¥10,270,000 (Direct Cost: ¥7,900,000、Indirect Cost: ¥2,370,000)
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| Research Abstract |
Neutrino is one of the elementary particles. Its properties are not known in details; even its absolute mass it not measured. The purpose of this study is to measure the neutrino absolute mass using superconducting detectors. We have developed two kinds of detectors: superconducting tunnel junction and microwavekinetic inductance detectors. The former is found to have lower detection efficiency unexpectedly. The latter, on the other hand, has higher phonon detection efficiency. We found a precise measurement of the energy needs more deep interpretation of the detector performance.
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