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Seismic array measurements at Virgo's west end building for the configuration of a Newtonian-noise cancellation system

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cris.lastimport.scopus2024-02-12T20:53:27Z
dc.abstract.enTerrestrial gravity fluctuations produce so-called Newtonian noise (NN) which is expected to limit the low frequency sensitivity of existing gravitational-waves (GW) detectors LIGO and Virgo, when they will reach their full potential, and of next-generation detectors like the Einstein Telescope. In this paper, we present a detailed characterization of the seismic field at Virgo's west end building as part of the development of a Newtonian noise cancellation system. The cancellation system will use optimally filtered data from a seismometer array to produce an estimate of the Newtonian-noise generated by the seismic field, and to subtract this estimate from the gravitational-wave channel of the detector. By using an array of 38 seismic sensors, we show that, despite the influence of the complexity of Virgo's infrastructure on the correlation across the array, Wiener filtering can still be very efficient in reconstructing the seismic field around the test-mass location. Taking into account the division of the building's foundations into separate concrete slabs, and the different properties of the seismic field across them, we conclude that the arrays to be used for the Newtonian-noise cancellation at Virgo will require a relatively large number of seismometers per test mass, i.e. significantly more than 10. Moreover, observed variations of the absolute noise residuals over time, related to the daily evolution of anthropogenic noise, suggest that the Wiener filter will need to be updated regularly, probably more often than every hour, to achieve stationarity of the background level after subtraction.
dc.affiliationUniwersytet Warszawski
dc.contributor.authorSingh, Neha
dc.contributor.authorPaoletti, Federico
dc.contributor.authorKoley, Soumen
dc.contributor.authorIdźkowski, Bartosz
dc.contributor.authorFiori, Irene
dc.contributor.authorHarms, Jan
dc.contributor.authorBulik, Tomasz
dc.contributor.authorBertolini, Alessandro
dc.contributor.authorTringali, Maria
dc.contributor.authorSuchiński, Maciej
dc.contributor.authorNikliborc, Krzysztof
dc.contributor.authorKutynia, Adam
dc.date.accessioned2024-01-26T07:30:42Z
dc.date.available2024-01-26T07:30:42Z
dc.date.copyright2019-12-18
dc.date.issued2020
dc.description.accesstimeBEFORE_PUBLICATION
dc.description.financePublikacja bezkosztowa
dc.description.number2
dc.description.versionORIGINAL_AUTHOR
dc.description.volume37
dc.identifier.doi10.1088/1361-6382/AB5C43
dc.identifier.issn0264-9381
dc.identifier.urihttps://repozytorium.uw.edu.pl//handle/item/119527
dc.identifier.weblinkhttp://adsabs.harvard.edu/abs/2020CQGra..37b5005T
dc.languageeng
dc.pbn.affiliationastronomy
dc.relation.ispartofClassical and Quantum Gravity
dc.relation.pages025005
dc.rightsOther
dc.sciencecloudnosend
dc.titleSeismic array measurements at Virgo's west end building for the configuration of a Newtonian-noise cancellation system
dc.typeJournalArticle
dspace.entity.typePublication