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ID: 119913.0, MPI für Gravitationsphysik / Laser Interferometry & Gravitational Wave Astronomy
Alignment control of GEO 600
Authors:Grote, Hartmut; Heinzel, Gerhard; Freise, Andreas; Gossler, Stefan; Willke, Benno; Lück, Harald; Ward, H.; Casey, Morag M.; Strain, Kenneth A.; Robertson, D. I.; Hough, Jim; Danzmann, Karsten
Language:English
Date of Publication (YYYY-MM-DD):2004
Title of Journal:Classical and Quantum Gravity
Volume:21
Issue / Number:5
Start Page:S441
End Page:S449
Review Status:not specified
Audience:Not Specified
Abstract / Description: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.
External Publication Status:published
Document Type:Article
Communicated by:Karsten Danzmann
Affiliations:MPI für Gravitationsphysik/GEO 600
MPI für Gravitationsphysik/Teilinstitut Hannover
MPI für Gravitationsphysik/Laser Interferometry & Gravitational Wave Astronomy
Identifiers:ISSN:0264-9381
DOI:10.1088/0264-9381/21/5/009
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