2010 Fiscal Year Final Research Report
Sensitivity improvement of TAMA300 gravitational-wave detector by developing next-generation interferometer technology
| Project/Area Number |
20244034
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| Research Category |
Grant-in-Aid for Scientific Research (A)
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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 | National Astronomical Observatory of Japan |
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Principal Investigator |
FUJIMOTO Masakatsu National Astronomical Observatory of Japan, 光赤外研究部, 教授 (90107475)
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| Co-Investigator(Kenkyū-buntansha) |
TAKAHASHI Ryutaro 国立天文台, 光赤外研究部, 助教 (60270451)
TATSUMI Daisuke 国立天文台, 光赤外研究部, 助教 (70333276)
ARAI Kouji 国立天文台, 光赤外研究部, 助教 (50321584)
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| Co-Investigator(Renkei-kenkyūsha) |
KAWAMURA Seiji 国立天文台, 光赤外研究部, 准教授 (40301725)
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| Project Period (FY) |
2008 – 2010
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| Keywords | 重力波 / レーザー干渉計 / 宇宙物理 / 制御工学 |
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| Research Abstract |
This research aims to realize a sensitivity enhancement in Japanese gravitational-wave detector LCGT by adopting a resonant sideband extraction (RSE) scheme. The following achievements in the past three years were made and bring about a steady progress for the LCGT ; (1) Digital mirror controls, (2) High-gain recycling control, (3) Developing of the modulation and de-modulation systems, (4) Avoidance of degenerations of the mirror alignment signals, and (5) Variable observational-band design.
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