LISA Pathfinder Performance Confirmed in an Open-Loop Configuration: Results from the Free-Fall Actuation Mode

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dc.contributor.authorArmano, M.
dc.contributor.authorAudley, H.
dc.contributor.authorBaird, J.
dc.contributor.authorBinetruy, P.
dc.contributor.authorBorn, M.
dc.contributor.authorBortoluzzi, D.
dc.contributor.authorCastelli, Eleonora
dc.contributor.authorCavalleri, A.
dc.contributor.authorCesarini, A.
dc.contributor.authorCruise, A. M.
dc.contributor.authorDanzmann, K.
dc.contributor.authorde Deus Silva, M.
dc.contributor.authorDiepholz, I.
dc.contributor.authorDixon, G.
dc.contributor.authorDolesi, R.
dc.contributor.authorFerraioli, L.
dc.contributor.authorFerroni, V.
dc.contributor.authorFitzsimons, E. D.
dc.contributor.authorFreschi, M.
dc.contributor.authorGesa, L.
dc.contributor.authorGibert, F.
dc.contributor.authorGiardini, D.
dc.contributor.authorGiusteri, R.
dc.contributor.authorGrimani, C.
dc.contributor.authorGrzymisch, J.
dc.contributor.authorHarrison, I.
dc.contributor.authorHartig, M.-S.
dc.contributor.authorHeinzel, G.
dc.contributor.authorHewitson, M.
dc.contributor.authorHollington, D.
dc.contributor.authorHoyland, D.
dc.contributor.authorHueller, M.
dc.contributor.authorInchauspé, H.
dc.contributor.authorJennrich, O.
dc.contributor.authorJetzer, P.
dc.contributor.authorKarnesis, N.
dc.contributor.authorKaune, B.
dc.contributor.authorKorsakova, N.
dc.contributor.authorKillow, C. J.
dc.contributor.authorLobo, J. A.
dc.contributor.authorLiu, L.
dc.contributor.authorLópez-Zaragoza, J. P.
dc.contributor.authorMaarschalkerweerd, R.
dc.contributor.authorMance, D.
dc.contributor.authorMeshksar, N.
dc.contributor.authorMartín, V.
dc.contributor.authorMartin-Polo, L.
dc.contributor.authorMartino, J.
dc.contributor.authorMartin-Porqueras, F.
dc.contributor.authorMateos, I.
dc.contributor.authorMcNamara, P. W.
dc.contributor.authorMendes, J.
dc.contributor.authorMendes, L.
dc.contributor.authorNofrarias, M.
dc.contributor.authorPaczkowski, S.
dc.contributor.authorPerreur-Lloyd, M.
dc.contributor.authorPetiteau, A.
dc.contributor.authorPivato, P.
dc.contributor.authorPlagnol, E.
dc.contributor.authorRamos-Castro, J.
dc.contributor.authorReiche, J.
dc.contributor.authorRobertson, D. I.
dc.contributor.authorRivas, F.
dc.contributor.authorRussano, G.
dc.contributor.authorSlutsky, J.
dc.contributor.authorSopuerta, C. F.
dc.contributor.authorSumner, T.
dc.contributor.authorTexier, D.
dc.contributor.authorThorpe, J. I.
dc.contributor.authorVetrugno, D.
dc.contributor.authorVitale, S.
dc.contributor.authorWanner, G.
dc.contributor.authorWard, H.
dc.contributor.authorWass, P. J.
dc.contributor.authorWeber, W. J.
dc.contributor.authorWissel, L.
dc.contributor.authorWittchen, A.
dc.contributor.authorZweifel, P.
dc.date.accessioned2025-08-13T20:14:13Z
dc.date.issued2019-09-11
dc.description.abstractWe report on the results of the LISA Pathfinder (LPF) free-fall mode experiment, in which the control force needed to compensate the quasistatic differential force acting on two test masses is applied intermittently as a series of “impulse” forces lasting a few seconds and separated by roughly 350 s periods of true free fall. This represents an alternative to the normal LPF mode of operation in which this balancing force is applied continuously, with the advantage that the acceleration noise during free fall is measured in the absence of the actuation force, thus eliminating associated noise and force calibration errors. The differential acceleration noise measurement presented here with the free-fall mode agrees with noise measured with the continuous actuation scheme, representing an important and independent confirmation of the LPF result. An additional measurement with larger actuation forces also shows that the technique can be used to eliminate actuation noise when this is a dominant factor.
dc.description.sponsorshipThis work has been made possible by the LISA Pathfinder mission, which is part of the space-science program of the European Space Agency. The French contribution has been supported by CNES (Accord Specific de projet CNES 1316634/CNRS 103747), the CNRS, the Observatoire de Paris and the University Paris Diderot. E. Plagnol and H. Inchausp´e would also like to acknowledge the financial support of the UnivEarthS Labex program at Sorbonne Paris Cit´e (ANR-10-LABX 0023 and ANR-11-IDEX-0005-02). The Albert-Einstein Institut acknowledges the support of the German Space Agency, DLR. The work is supported by the Federal Ministry for Economic Affairs and Energy based on a resolution of the German Bundestag (FKZ 50OQ0501 and FKZ 50OQ1601). The Italian contribution has been supported by Agenzia Spaziale Italiana and Istituto Nazionale di Fisica Nucleare. The Spanish contribution has been supported by Contracts No. AYA2010-15709 (MICINN), No. ESP2013-47637-P, and No. ESP2015-67234-P and No. ESP2017-90084-P (MINECO), and 2017-SGR-1469 (AGAUR). M. Nofrarias acknowledges support from Fundacion General CSIC (Programa ComFuturo). F. Rivas acknowledges support from a Formación de Personal Investigador (MINECO) contract. The Swiss contribution acknowledges the support of the Swiss Space Office (SSO) via the PRODEX Programme of ESA. L. F. acknowledges the support of the Swiss National Science Foundation Project Number 200021- 162449. The UK groups wish to acknowledge support from the United Kingdom Space Agency (UKSA), the University of Glasgow, the University of Birmingham, Imperial College, and the Scottish Universities Physics Alliance (SUPA). J. I. Thorpe and J. Slutsky acknowledge the support of the U.S. National Aeronautics and Space Administration (NASA).
dc.description.urihttps://journals.aps.org/prl/abstract/10.1103/PhysRevLett.123.111101
dc.format.extent7 pages
dc.genrejournal articles
dc.identifierdoi:10.13016/m2xe2i-hdwi
dc.identifier.citationArmano, M., J. Slutsky, J. I. Thorpe, E. Castelli, H. Audley, J. Baird, et al. “LISA Pathfinder Performance Confirmed in an Open-Loop Configuration: Results from the Free-Fall Actuation Mode.” Physical Review Letters 123, no. 11 (2019): 111101. https://doi.org/10.1103/PhysRevLett.123.111101.
dc.identifier.urihttps://doi.org/10.1103/PhysRevLett.123.111101
dc.identifier.urihttp://hdl.handle.net/11603/39717
dc.language.isoen
dc.publisherAPS
dc.relation.isAvailableAtThe University of Maryland, Baltimore County (UMBC)
dc.relation.ispartofUMBC Center for Space Sciences and Technology (CSST) / Center for Research and Exploration in Space Sciences & Technology II (CRSST II)
dc.rightsThis work was written as part of one of the author's official duties as an Employee of the United States Government and is therefore a work of the United States Government. In accordance with 17 U.S.C. 105, no copyright protection is available for such works under U.S. Law.
dc.rightsPublic Domain
dc.rights.urihttps://creativecommons.org/publicdomain/mark/1.0/
dc.titleLISA Pathfinder Performance Confirmed in an Open-Loop Configuration: Results from the Free-Fall Actuation Mode
dc.typeText
dcterms.creatorhttps://orcid.org/0000-0002-4429-0682

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