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A xylophone configuration for a third-generation gravitational wave detector

Hild, S. and Chelkowski, S. and Freise, A. and Franc, J. and Morgado, N. and Flaminio, R. and DeSalvo, R. (2010) A xylophone configuration for a third-generation gravitational wave detector. Classical and Quantum Gravity, 27 (1). 015003. ISSN 0264-9381.

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Achieving the demanding sensitivity and bandwidth, envisaged for third-generation gravitational wave (GW) observatories, is extremely challenging with a single broadband interferometer. Very high optical powers (megawatts) are required to reduce the quantum noise contribution at high frequencies, while the interferometer mirrors have to be cooled to cryogenic temperatures in order to reduce thermal noise sources at low frequencies. To resolve this potential conflict of cryogenic test masses with high thermal load, we present a conceptual design for a 2-band xylophone configuration for a third-generation GW observatory, composed of a high-power, high-frequency interferometer and a cryogenic low-power, low-frequency instrument. Featuring inspiral ranges of 3200 Mpc and 38 000 Mpc for binary neutron stars and binary black holes coalesences, respectively, we find that the potential sensitivity of xylophone configurations can be significantly wider and better than what is possible in a single broadband interferometer.

Item Type:Article
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Freise, A.0000-0001-6586-9901
Additional Information:© 2010 Institute of Physics and IOP Publishing Limited. Print publication: Issue 1 (7 January 2010); received 22 July 2009; in final form 23 October 2009; published 15 December 2009. This work has been supported by the Science and Technology Facilities Council (STFC), the European Gravitational Observatory (EGO), the Centre national de la recherche scientifique (CNRS), the United States National Science Foundation (NSF) and the Seventh Framework Programme (Grant Agreement 211743) of the European Commission.
Funding AgencyGrant Number
Science and Technology Facilities Council (STFC)UNSPECIFIED
European Gravitational Observatory (EGO)UNSPECIFIED
Centre national de la recherche scientifique (CNRS)UNSPECIFIED
Seventh Framework Programme of the European CommissionGrant Agreement 211743
Issue or Number:1
Classification Code:PACS numbers: 04.80.Nn, 07.60.Ly, 95.75.Kk, 95.55.Ym
Record Number:CaltechAUTHORS:20100125-095807417
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Official Citation:A xylophone configuration for a third-generation gravitational wave detector S Hild, S Chelkowski, A Freise, J Franc, N Morgado, R Flaminio and R DeSalvo 2010 Class. Quantum Grav. 27 015003 (8pp) doi: 10.1088/0264-9381/27/1/015003
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:17299
Deposited By: Jason Perez
Deposited On:25 Jan 2010 19:34
Last Modified:09 Mar 2020 13:18

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