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  The automatic alignment system of GEO 600

Grote, H., Heinzel, G., Freise, A., Gossler, S., Willke, B., Lück, H., et al. (2002). The automatic alignment system of GEO 600. Classical and Quantum Gravity, 19(7), 1849-1855. doi:10.1088/0264-9381/19/7/384.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0013-53B9-7 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0013-53BA-5
Genre: Journal Article

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 Creators:
Grote, Hartmut1, Author              
Heinzel, Gerhard1, Author              
Freise, Andreas, Author
Gossler, Stefan1, Author              
Willke, Benno1, Author              
Lück, Harald1, Author              
Ward, H., Author
Casey, Morag M., Author
Strain, Kenneth A., Author
Robertson, D., Author
Hough, Jim, Author
Danzmann, Karsten1, Author              
Affiliations:
1Laser Interferometry & Gravitational Wave Astronomy, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society, ou_24010              

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 Abstract: This paper gives an overview of the automatic mirror alignment system of the modecleaner and main interferometer of the GEO 600 gravitational wave detector. In order to achieve the required sensitivity of the detector, the eigenmodes of all optical cavities have to be aligned with respect to the incoming beams (or vice versa) and kept aligned for long measuring periods. Moreover the beam spots have to be centred on the mirrors to minimize coupling of residual angular mirror motion into changes of the optical path length. An overview of the principles and setup for the automatic alignment is given, and first results of the modecleaner and 1200 m cavity alignment system are presented, including the error-point spectra of mirror angular motions, which are smaller than 10(-8) rad Hz(-1/2) below 10 H

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Language(s): eng - English
 Dates: 2002-04-07
 Publication Status: Published in print
 Pages: -
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 Identifiers: eDoc: 3439
DOI: 10.1088/0264-9381/19/7/384
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Title: Classical and Quantum Gravity
Source Genre: Journal
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Pages: - Volume / Issue: 19 (7) Sequence Number: - Start / End Page: 1849 - 1855 Identifier: ISSN: 0264-9381