Alignment control of GEO 600

Grote, 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)

Full text not currently available from Enlighten.

Publisher's URL:


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.

Item Type:Articles
Glasgow Author(s) Enlighten ID:Casey, Dr Morag and Robertson, Dr David and Hough, Professor James and Ward, Professor Henry and Strain, Professor Kenneth
Authors: Grote, H., Heinzel, G., Freise, A., Gossler, S., Willke, B., Luck, H., Ward, H., Casey, M., Strain, K., Robertson, D., Hough, J., and Danzmann, K.
Subjects:Q Science > QC Physics
College/School:College of Science and Engineering > School of Physics and Astronomy
Research Centre:College of Science and Engineering > School of Physics and Astronomy > Institute for Gravitational Research
Journal Name:Classical and Quantum Gravity
ISSN (Online):1361-6382

University Staff: Request a correction | Enlighten Editors: Update this record