Suspension platform interferometer for the AEI 10 m prototype: concept, design and optical layout

Dahl, K., Heinzel, G., Willke, B., Strain, K. A. , Goßler, S. and Danzmann, K. (2012) Suspension platform interferometer for the AEI 10 m prototype: concept, design and optical layout. Classical and Quantum Gravity, 29(9), 095024. (doi: 10.1088/0264-9381/29/9/095024)

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Publisher's URL: http://dx.doi.org/10.1088/0264-9381/29/9/095024

Abstract

At present a 10 m prototype interferometer facility is being set up at the AEI Hannover. One unique feature of the prototype will be the suspension platform interferometer (SPI). The purpose of the SPI is to monitor and stabilize the relative motion between three seismically isolated optical tables. The in-vacuum tables are suspended in an L-shaped configuration with an arm length of 11.65 m. The design goal of the SPI is to stabilize longitudinal differential displacements to a level of 100 pm between 10 mHz and 100 Hz and relative angular noise of 10 nrad in the same frequency band. This paper covers the optical layout, signal processing and design aspects of the SPI, e.g. cross-coupling between the different degrees of freedom and fibre pointing noise are investigated. A simulation is presented which shows that with the chosen optical design of the SPI all degrees of table motion can be sensed in a fully decoupled way.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Strain, Professor Kenneth
Authors: Dahl, K., Heinzel, G., Willke, B., Strain, K. A., Goßler, S., and Danzmann, K.
College/School:College of Science and Engineering > School of Physics and Astronomy
Journal Name:Classical and Quantum Gravity
Publisher:Institute of Physics
ISSN:0264-9381
ISSN (Online):1361-6382

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