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  The output mode cleaner of GEO 600

Prijatelj, M., Degallaix, J., Grote, H., Leong, J., Affeldt, C., Hild, S., et al. (2012). The output mode cleaner of GEO 600. Classical and quantum gravity, 29(5): 055009. doi:10.1088/0264-9381/29/5/055009.

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Datensatz-Permalink: http://hdl.handle.net/11858/00-001M-0000-000E-B049-5 Versions-Permalink: http://hdl.handle.net/11858/00-001M-0000-000E-B04B-1
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CQG_29_5_055009.pdf (beliebiger Volltext), 912KB
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Prijatelj, M.1, Autor              
Degallaix, J.1, Autor              
Grote, H.1, Autor              
Leong, J.2, Autor              
Affeldt, C.1, Autor              
Hild, S.1, Autor              
Luck, H.1, Autor              
Slutsky, J.1, Autor
Wittel, H.1, Autor              
Strain, K. A.1, Autor              
Danzmann, K.1, Autor              
Affiliations:
1Laser Interferometry & Gravitational Wave Astronomy, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society, escidoc:24010              
2Observational Relativity and Cosmology, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society, escidoc:24011              

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 Zusammenfassung: The German–British interferometric gravitational wave detector GEO 600 is currently undergoing upgrades within the GEO-HF upgrade program. The goal of this program is to enhance the sensitivity of GEO 600, in particular at frequencies above 500 Hz. At these frequencies, the detector is limited by shot noise. An important element of the upgrade is the implementation of an output mode cleaner (OMC). This filtering cavity suppresses higher order spatial and temporal modes in the interferometer's output beam, thereby reducing the shot noise and enhancing sensitivity. Fully automated lock acquisition for the OMC was developed in order to ensure a high duty cycle of GEO 600. To maintain optimum sensitivity, the resonance condition of the OMC must be matched to the output beam from the interferometer. This requires continuous control of the resonance frequency of the OMC to the light, and alignment of the beam to the OMC. We describe the design and implementation of the OMC with special attention to the control techniques employed. We present results from the experience gained during the S6/VSR3 science run. Furthermore, we describe an upper limit measurement of the internal displacement noise of a piezoelectric actuator.

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 Datum: 2012
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 Identifikatoren: DOI: 10.1088/0264-9381/29/5/055009
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Titel: Classical and quantum gravity
Genre der Quelle: Zeitschrift
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Ort, Verlag, Ausgabe: Bristol, U.K. : Institute of Physics
Seiten: - Band / Heft: 29 (5) Artikelnummer: 055009 Start- / Endseite: - Identifikator: ISSN: 0264-9381
CoNE: http://pubman.mpdl.mpg.de/cone/journals/resource/954925513480_1