Reduction of quantum noise for gravitational wave detector LCGT
| Project/Area Number |
23340077
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Particle/Nuclear/Cosmic ray/Astro physics
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| Research Institution | The University of Tokyo |
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Principal Investigator |
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| Co-Investigator(Renkei-kenkyūsha) |
AGATSUMA Kazuhiro 国立天文台, 重力波プロジェクト推進室, 研究員 (60599489)
SAKATA Shihori 電気通信大学, 情報理工学(系)研究科, 助教 (40534590)
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| Research Collaborator |
KONISHO Shiori
NISHIMURA Tsubasa
NAKANO Masayuki
FRIEDRICH Daniel
MORI Takumi
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| 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 |
¥19,370,000 (Direct Cost: ¥14,900,000、Indirect Cost: ¥4,470,000)
Fiscal Year 2013: ¥5,460,000 (Direct Cost: ¥4,200,000、Indirect Cost: ¥1,260,000)
Fiscal Year 2012: ¥6,110,000 (Direct Cost: ¥4,700,000、Indirect Cost: ¥1,410,000)
Fiscal Year 2011: ¥7,800,000 (Direct Cost: ¥6,000,000、Indirect Cost: ¥1,800,000)
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| Keywords | 重力波 / レーザー干渉計 / 量子雑音 |
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| Outline of Final Research Achievements |
An experiment was performed to observe and reduce radiation pressure noise using a high finesse optical cavity consisting of super-light and regular mirrors. The angular anti-spring effect of radiation pressure, which is a serious problem in this experiment, was investigated. Detailed model was established, the new vibration isolation system was installed, and a new method of measuring the transfer function from the torque of the regular mirror to the angle of the super-light mirror was performed. A new laser power measurement system using radiation pressure was also developed.
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Report
(4 results)
Research Products
(13 results)
