M Hewitson et al 2005 Class. Quantum Grav. 22 4253 doi:10.1088/0264-9381/22/20/007
M Hewitson1, H Grote1, S Hild1, H Lück1, P Ajith1, J R Smith1, K A Strain2, B Willke1 and G Woan2
Show affiliationsGEO 600 is an interferometric gravitational wave detector with a 600 m arm-length and which uses a dual-recycled optical configuration to give enhanced sensitivity over certain frequencies in the detection band. Due to the dual-recycling, GEO 600 has two main output signals, both of which potentially contain gravitational wave signals. These two outputs are calibrated to strain using a time-domain method. In order to simplify the analysis of the GEO 600 data set, it is desirable to combine these two calibrated outputs to form a single strain signal that has optimal signal-to-noise ratio across the detection band. This paper describes a time-domain method for doing this combination. The method presented is similar to one developed for optimally combining the outputs of two colocated gravitational wave detectors. In the scheme presented in this paper, some simplifications are made to allow its implementation using time-domain methods.
Issue 20 (21 October 2005)
Received 8 July 2005, in final form 18 August 2005
Published 27 September 2005
M Hewitson et al 2005 Class. Quantum Grav. 22 4253
C D McGuinness et al 2004 Meas. Sci. Technol. 15 L19
N B Sopher et al 2007 J. Micromech. Microeng. 17 2360
P Gomez et al 2007 J. Phys. D: Appl. Phys. 40 4396
C J Olson Reichhardt and C Reichhardt 2003 J. Phys. A: Math. Gen. 36 5841
P C W Davies 2004 Class. Quantum Grav. 21 2761
M Ondrejcek et al 2005 J. Phys.: Condens. Matter 17 S1397
John B Boffard et al 2004 J. Phys. D: Appl. Phys. 37 R143
T Vestad et al 2004 J. Micromech. Microeng. 14 1503
A Jaroń-Becker et al 2003 J. Phys. B: At. Mol. Opt. Phys. 36 L375