Development of gravitational wave detector using digital control

2010 Fiscal Year Final Research Report

• Project/Area Number: 21740163
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Single-year Grants
• Research Field: Particle/Nuclear/Cosmic ray/Astro physics
• Research Institution: The University of Tokyo
• Principal Investigator: MIYAKAWA Osamu The University of Tokyo, 宇宙線研究所, 助教 (90532680)
• Project Period (FY): 2009 – 2010
• Keywords: 宇宙物理 / 重力波 / 計算機システム / 超精密計測 / 制御工学

Research Abstract

We developed a digital controls system for the gravitational wave detector by an international collaboration with LIGO group in the U. S and installed it into a prototype gravitational wave detector CLIO located in Kamioka-mine. We implemented the system that able to control an actual complicated interferometer control topology by sensing and actuating signals digitally filtered and adjusted.

Research Products

• [Journal Article] Direct Measurement of Thermal Fluctuation of High-Q Pendulum Phys. (2010)
  • Author(s): K.Agatsuma, T.Uchiyama, K.Yamamoto, M.Ohashi, S.Kawamura, S.Miyoki, O.Miyakawa, S.Telada, K.Kuroda
  • Journal Title: Rev.Lett. 104 Pages: 040602
  • Peer Reviewed
• [Journal Article] collaborators Thermal-noise-limited underground interferometer CLIO Class. (2010)
  • Author(s): K.Agatsuma, K.Arai, M.-K.Fujimoto, S.Kawamura, K.Kuroda, O.Miyakawa, S.Miyoki, M.Ohashi, T.Suzuki, R.Takahashi, D.Tatsumi, S.Telada, T.Uchiyama, K.Yamamoto, CLIO
  • Journal Title: Quantum Grav. 27 Pages: 084022
  • Peer Reviewed
• [Presentation] CLIOからLCGTへ (2011)
  • Author(s): 宮川治
  • Organizer: 日本物理学会
  • Place of Presentation: 新潟大学
  • Year and Date: 2011-03-26
• [Presentation] 低温レーザー干渉計CLIO(30),デジタルシステムの導入(IV) (2010)
  • Author(s): 宮川治
  • Organizer: 日本物理学会
  • Place of Presentation: 九州工業大学
  • Year and Date: 2010-09-13
• [Presentation] 低温レーザー干渉計CLIO(28),デジタルシステムの導入(III) (2010)
  • Author(s): 宮川治
  • Organizer: 日本物理学会
  • Place of Presentation: 岡山大学
  • Year and Date: 2010-03-22
• [Presentation] 低温レーザー干渉計CLIO(25),デジタルシステムの導入(II) (2009)
  • Author(s): 宮川治
  • Organizer: 日本物理学会
  • Place of Presentation: 甲南大学
  • Year and Date: 2009-09-10
• [Remarks] ホームページ等
  • URL: http://gwwiki.icrr.u-tokyo.ac.jp/JGWwiki/CLIO