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  Alignment control of GEO 600

Grote, H., Heinzel, G., Freise, A., Gossler, S., Willke, B., Lück, H., et al. (2004). Alignment control of GEO 600. Classical and Quantum Gravity, 21(5), S441-S449. doi:10.1088/0264-9381/21/5/009.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0013-5144-0 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0013-5145-E
Genre: Journal Article

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119913.pdf (Publisher version), 226KB
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 Creators:
Grote, Hartmut1, Author              
Heinzel, Gerhard1, Author              
Freise, Andreas1, 2, Author
Gossler, Stefan1, Author              
Willke, Benno1, Author              
Lück, Harald1, Author              
Ward, H., Author
Casey, Morag M., Author
Strain, Kenneth A., Author
Robertson, D. I., Author
Hough, Jim, Author
Danzmann, Karsten1, Author              
Affiliations:
1Laser Interferometry & Gravitational Wave Astronomy, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society, ou_24010              
2AEI-Hannover, MPI for Gravitational Physics, Max Planck Society, ou_24009              

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 Abstract: We give an overview of the automatic mirror alignment system of the gravitational wave detector GEO 600. In order to achieve the required sensitivity of the Michelson interferometer, the axes of interfering beams have to be superimposed with a residual angle of the order 10-8 rad. The beam spots have to be centred on the mirrors to minimize coupling of alignment noise into longitudinal signals. We present the actual control topology and results from the system in operation, which controls all alignment degrees of the power-recycled Michelson. With this system continuous lock stretches of more than 121 h duration were achieved.

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Language(s): eng - English
 Dates: 2004
 Publication Status: Published in print
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 Identifiers: eDoc: 119913
DOI: 10.1088/0264-9381/21/5/009
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Title: Classical and Quantum Gravity
Source Genre: Journal
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Pages: - Volume / Issue: 21 (5) Sequence Number: - Start / End Page: S441 - S449 Identifier: ISSN: 0264-9381