Alignment control of GEO 600

H. Grote; G. Heinzel; A. Freise; S. Goßler; B. Willke; H. Lück; H. Ward; M. M. Casey; K. A. Strain; D. I. Robertson; J. Hough; K. Danzmann

doi:10.1088/0264-9381/21/5/009

Alignment control of GEO 600

H. Grote^*, G. Heinzel, A. Freise, S. Goßler, B. Willke, H. Lück, H. Ward, M. M. Casey, K. A. Strain, D. I. Robertson, J. Hough, K. Danzmann

^*Corresponding author for this work

Research output: Contribution to Journal › Article › Academic › peer-review

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.

Original language	English
Pages (from-to)	S441-S449
Journal	Classical and Quantum Gravity
Volume	21
Issue number	5
DOIs	https://doi.org/10.1088/0264-9381/21/5/009
Publication status	Published - 7 Mar 2004
Externally published	Yes

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title = "Alignment control of GEO 600",

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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doi = "10.1088/0264-9381/21/5/009",

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T1 - Alignment control of GEO 600

AU - Grote, H.

AU - Heinzel, G.

AU - Freise, A.

AU - Goßler, S.

AU - Willke, B.

AU - Lück, H.

AU - Ward, H.

AU - Casey, M. M.

AU - Strain, K. A.

AU - Robertson, D. I.

AU - Hough, J.

AU - Danzmann, K.

PY - 2004/3/7

Y1 - 2004/3/7

N2 - 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.

AB - 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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VL - 21

SP - S441-S449

JO - Classical and Quantum Gravity

JF - Classical and Quantum Gravity

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ER -

Alignment control of GEO 600

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