| Project/Area Number |
23K19053
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| Research Category |
Grant-in-Aid for Research Activity Start-up
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| Allocation Type | Multi-year Fund |
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| Review Section |
0203:Particle-, nuclear-, astro-physics, and related fields
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| Research Institution | National Astronomical Observatory of Japan |
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Principal Investigator |
Eisenmann Marc 国立天文台, 重力波プロジェクト, 特任研究員 (80984541)
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| Project Period (FY) |
2023-08-31 – 2025-03-31
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| Project Status |
Granted (Fiscal Year 2023)
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| Budget Amount *help |
¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2024: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2023: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
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| Keywords | KAGRA / sapphire / birefringence / gravitational wave |
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| Outline of Research at the Start |
Thermal noise is one of the limiting noise of gravitational waves detectors. To reduce it, it is planned to operate at cryogenic temperature with crystalline substrates and possibly use crystalline coatings. Such components can be birefringent which can drastically spoil the detectors performances. It is therefore required to accurately characterize the crystals birefringence before their installation to insure optimal performances. Here, we propose to use a pair of electro-optic components to achieve fast 2D birefringence measurement and compensation which will be crucial for these detectors.
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