A xylophone configuration for a third-generation gravitational wave detector
Abstract
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.
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.Additional details
- Eprint ID
- 17299
- Resolver ID
- CaltechAUTHORS:20100125-095807417
- Science and Technology Facilities Council (STFC)
- European Gravitational Observatory (EGO)
- Centre national de la recherche scientifique (CNRS)
- NSF
- Grant Agreement 211743
- Seventh Framework Programme of the European Commission
- Created
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2010-01-25Created from EPrint's datestamp field
- Updated
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2022-07-12Created from EPrint's last_modified field