The GEO-HF project

doi:10.1088/0264-9381/23/8/S26

The GEO-HF project

B Willke et al 2006 Class. Quantum Grav. 23 S207-S214 doi: 10.1088/0264-9381/23/8/S26

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B Willke¹, P Ajith¹, B Allen³, P Aufmuth¹, C Aulbert³, S Babak³, R Balasubramanian⁴, B W Barr³, S Berukoff³, A Bunkowski¹, G Cagnoli², C A Cantley², M M Casey², S Chelkowski¹, Y Chen³, D Churches⁴, T Cokelaer⁴, C N Colacino⁶, D R M Crooks², C Cutler³, K Danzmann¹, R J Dupuis², E Elliffe², C Fallnich⁵, A Franzen¹, A Freise¹, I Gholami³, S Goßler¹, A Grant², H Grote¹, S Grunewald³, J Harms¹, B Hage¹, G Heinzel¹, I S Heng², A Hepstonstall², M Heurs¹, M Hewitson¹, S Hild¹, J Hough², Y Itoh³, G Jones⁴, R Jones², S H Huttner², K Kötter¹, B Krishnan³, P Kwee¹, H Lück¹, M Luna⁷, B Machenschalk³, M Malec¹, R A Mercer⁶, T Meier¹, C Messenger⁶, S Mohanty³, K Mossavi¹, S Mukherjee³, P Murray², G P Newton², M A Papa³, M Perreur-Lloyd², M Pitkin², M V Plissi², R Prix³, V Quetschke¹, V Re⁶, T Regimbau⁴, H Rehbein¹, S Reid², L Ribichini¹, D I Robertson², N A Robertson^2,8, C Robinson⁴, J D Romano⁴, S Rowan², A Rüdiger¹, B S Sathyaprakash⁴, R Schilling¹, R Schnabel¹, B F Schutz^3,4, F Seifert¹, A M Sintes⁷, J R Smith¹, P H Sneddon², K A Strain², I Taylor⁴, R Taylor², A Thüring¹, C Ungarelli⁶, H Vahlbruch¹, A Vecchio⁶, J Veitch², H Ward², U Weiland¹, H Welling⁵, L Wen³, P Williams³, W Winkler¹, G Woan² and R Zhu³
¹ Max-Planck-Institut für Gravitationsphysik (Albert-Einstein-Institut) und Universität Hannover, Callinstr 38, D-30167 Hannover, Germany
² Department of Physics & Astronomy, University of Glasgow, Glasgow G12 8QQ, UK
³ Max-Planck-Institut für Gravitationsphysik (Albert-Einstein-Institut), Golm Am Mühlenberg 1, D-14476 Golm, Germany
⁴ Department of Physics and Astronomy, Cardiff University, PO Box 913, Cardiff, CF2 3YB, UK
⁵ Laser Zentrum Hannover eV, Hollerithallee 8, D-30419 Hannover, Germany
⁶ School of Physics and Astronomy, The University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK
⁷ Departament de Fisica, Universitat de les Illes Balears, E-07122 Palma de Mallorca, Spain
⁸ Edward L Ginzton Laboratory, Stanford University, Stanford, CA 94305-4088, USA

Abstract. The GEO 600 gravitational wave detector uses advanced technologies including signal recycling and monolithic fused-silica suspensions to achieve a sensitivity close to the kilometre scale LIGO and VIRGO detectors. As soon as the design sensitivity of GEO 600 is reached, the detector will be operated as part of the worldwide network to acquire data of scientific interest. The limited infrastructure at the GEO site does not allow for a major upgrade of the detector. Hence the GEO collaboration decided to improve the sensitivity of the GEO detector by small sequential upgrades some of which will be tested in prototypes first. The development, test and installation of these upgrades are named 'The GEO-HF Project.' This paper describes the upgrades considered in the GEO-HF project as well as their scientific reasons. We will describe the changes in the GEO 600 infrastructure and the prototype work that is planned to support these upgrades. Finally, we will point to some laboratory research that identifies new technologies or optical configurations that might undergo a transition into detector subsystems within the GEO-HF project.

PACS numbers: 04.80.Nn, 07.60.Ly, 95.45.+i, 95.55.Ym

Print publication: Issue 8 (21 April 2006)
Received 31 August 2005, in final form 25 November 2005
Published 28 March 2006

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The GEO-HF project

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