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  LISA Pathfinder Platform Stability and Drag-free Performance

LISA Pathfinder Collaboration, Armano, M., Audley, H., Baird, J., Binetruy, P., Born, M., et al. (in preparation). LISA Pathfinder Platform Stability and Drag-free Performance.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0002-AF62-B Version Permalink: http://hdl.handle.net/21.11116/0000-0003-47A8-0
Genre: Paper

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LISA Pathfinder Collaboration, Author              
Armano, Michele, Author
Audley, Heather1, Author              
Baird, Jonathon, Author
Binetruy, Pierre, Author
Born, Michael1, Author              
Bortoluzzi, Daniele, Author
Castelli, Eleanora, Author
Cavalleri, Antonella, Author
Cesarini, Andrea, Author
Cruise, Mike, Author
Danzmann, Karsten1, Author              
de Deus Silva, Marcus , Author
Diepholz, Ingo1, Author              
Dixon, George, Author
Dolesi, Rita, Author
Ferraioli, Luigi, Author
Ferroni, Valerio, Author
Fitzsimons, Ewan, Author
Freschi, Mario, Author
Gesa, Luis, AuthorGibert, Ferran, AuthorGiardini, Domenico, AuthorGiusteri, Roberta, AuthorGrimani, Catia, AuthorGrzymisch, Jonathan, AuthorHarrison, Ian, AuthorHeinzel, Gerhard, AuthorHewitson, Martin2, Author              Hollington, Daniel, AuthorHoyland, David, AuthorHueller, Mauro, AuthorInchauspe, Henri, AuthorJennrich, Oliver, AuthorJetzer, Philippe, AuthorKarnesis, Nikolaos, AuthorKaune, Brigitte1, Author              Korsakova, Natalia, AuthorKillow, Christian J, AuthorLobo, Alberto, AuthorLloro, Ivan, AuthorLiu, Li, AuthorLopez-Zaragoza, Juan-Pedro P, AuthorMaarschalkerweerd, Rolf, AuthorMance, Davor, AuthorMeshksar, Neda, AuthorMartın, V, AuthorMartin-Polo, L, AuthorMartino, Joseph, AuthorMartin-Porqueras, Fernando, AuthorMateos, Ignacio, AuthorMcNamara, Paul, AuthorMendes, Jose, AuthorMendes, Luis, AuthorNofrarias, Miquel, AuthorPaczkowski, Sarah1, Author              Perreur-Lloyd, Michael, AuthorPetiteau, Antoine, AuthorPivato, Paolo, AuthorPlagnol, Eric, AuthorRamos-Castro, Jose, AuthorReiche, Jens1, Author              Robertson, David, AuthorRivas, Francisco, AuthorRussano, Giuliana, AuthorSlutsky, Jacob, AuthorSopuerta, Carlos, AuthorSumner, Timothy, AuthorTexier, Daniel, AuthorThorpe, Ira, AuthorVetrugno, Daniele, AuthorVitale, Stefano, AuthorWanner, Gudrun1, Author              Ward, Harry, AuthorWass, Peter, AuthorWeber, William, AuthorWissel, Lennart, AuthorWittchen, Andreas1, AuthorZweifel, Peter, Author more..
Affiliations:
1Laser Interferometry & Gravitational Wave Astronomy, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society, ou_24010              
2Observational Relativity and Cosmology, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society, ou_24011              

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Free keywords: Astrophysics, Instrumentation and Methods for Astrophysics, astro-ph.IM
 Abstract: The science operations of the LISA Pathfinder mission has demonstrated the feasibility of sub-femto-g free-fall of macroscopic test masses necessary to build a LISA-like gravitational wave observatory in space. While the main focus of interest, i.e. the optical axis or the $x$-axis, has been extensively studied, it is also of interest to evaluate the stability of the spacecraft with respect to all the other degrees of freedom. The current paper is dedicated to such a study, with a focus set on an exhaustive and quantitative evaluation of the imperfections and dynamical effects that impact the stability with respect to its local geodesic. A model of the complete closed-loop system provides a comprehensive understanding of each part of the in-loop coordinates spectra. As will be presented, this model gives very good agreements with LISA Pathfinder flight data. It allows one to identify the physical noise source at the origin and the physical phenomena underlying the couplings. From this, the performances of the stability of the spacecraft, with respect to its geodesic, are extracted as a function of frequency. Close to $1 mHz$, the stability of the spacecraft on the $X_{SC}$, $Y_{SC}$ and $Z_{SC}$ degrees of freedom is shown to be of the order of $5.0\ 10^{-15} m\ s^{-2}/\sqrt{Hz}$ for X and $4.0 \ 10^{-14} m\ s^{-2}/\sqrt{Hz}$ for Y and Z. For the angular degrees of freedom, the values are of the order $3\ 10^{-12} rad\ s^{-2}/\sqrt{Hz}$ for $\Theta_{SC}$ and $3\ 10^{-13} rad\ s^{-2}/\sqrt{Hz}$ for $H_{SC}$ and $\Phi_{SC}$.

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 Dates: 2018-12-13
 Publication Status: Not specified
 Pages: 16 pages, 10 figures
 Publishing info: -
 Table of Contents: -
 Rev. Method: -
 Identifiers: arXiv: 1812.05491
URI: http://arxiv.org/abs/1812.05491
 Degree: -

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