| Budget Amount *help |
¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2014: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2013: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
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| Outline of Final Research Achievements |
We developped a new X-ray source which makes it possible to understand responses of a liquid xenon detector for low energy (< 10 keV) events expected to be caused by dark matter particles. We evaluated several optical parameters that are absorption and scattering lengths of liquid xenon and reflections of surface of detector vessel. Owing to deep understanding of detector, uncertainties for energy scale were drastically reduced by this study.
By operating above improved detector stably for more than a year, we conducted dark matter search experiment using annual modulation signals.
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