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  Mechanical quality factor measurements of monolithically-suspended fused silica test masses of the GEO600 gravitational wave detector

Smith, J. R., Cagnoli, G., Crooks, D. R. M., Fejer, M. M., Gossler, S., Lück, H., et al. (2004). Mechanical quality factor measurements of monolithically-suspended fused silica test masses of the GEO600 gravitational wave detector. Classical Quantum Gravity, 21(5), S1091-S1098.

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Item Permalink: https://hdl.handle.net/11858/00-001M-0000-0013-5035-7 Version Permalink: https://hdl.handle.net/11858/00-001M-0000-0013-5036-5
Genre: Conference Paper

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 Creators:
Smith, Joshua R.1, 2, Author
Cagnoli, G.1, 2, Author
Crooks, D. R. M.1, 2, Author
Fejer, M. M.1, 2, Author
Gossler, Stefan2, Author           
Lück, Harald2, Author           
Rowan, S.1, 2, Author
Hough, Jim1, 2, Author
Danzmann, Karsten2, Author           
Affiliations:
1AEI-Hannover, MPI for Gravitational Physics, Max Planck Society, ou_24009              
2Laser Interferometry & Gravitational Wave Astronomy, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society, ou_24010              

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 Abstract: Internal thermal noise is expected to be a limiting noise source in the most sensitive frequency band of the GEO 600 gravitational wave detector. Because thermal noise is directly related to energy dissipation, care has been taken to construct test mass suspensions from low-dissipation materials and to eliminate inter-material rubbing where possible. Recently, the GEO 600 team finished the installation of triple-pendulum suspensions for the optics of the Michelson interferometer. Each of these triple pendulums incorporates a monolithic fused silica pendulum as the lowest stage. We have made internal mode quality factor measurements of three monolithically suspended test masses. Using these measurements we estimate of the level of internal thermal noise in the GEO 600 interferometer.

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Language(s): eng - English
 Dates: 2004-03-07
 Publication Status: Issued
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 Identifiers: eDoc: 118609
DOI: 10.1088/0264-9381/21/5/105
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Title: 5th Edoardo Amaldi Conference on Gravitational Waves
Place of Event: Tirrenia, Italy
Start-/End Date: 2003-07-06 - 2003-07-11

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Title: Classical Quantum Gravity
Source Genre: Journal
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Pages: - Volume / Issue: 21 (5) Sequence Number: - Start / End Page: S1091 - S1098 Identifier: ISSN: 0264-9381