Tilt-to-length coupling in LISA Pathfinder: Long-term stability
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Published:2024-09-03
Issue:6
Volume:110
Page:
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ISSN:2470-0010
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Container-title:Physical Review D
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language:en
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Short-container-title:Phys. Rev. D
Author:
Armano M.1, Audley H.23, Baird J.4, Binetruy P.5, Born M.23, Bortoluzzi D.67, Castelli E.8, Cavalleri A.9, Cesarini A.10, Cruise A. M.11, Danzmann K.23, de Deus Silva M.1, Diepholz I.23, Dixon G.11, Dolesi R.8, Ferraioli L.12, Ferroni V.8, Fitzsimons E. D.13, Freschi M.1, Gesa L.1415, Giardini D.12, Gibert F.8, Giusteri R.23, Grimani C.10, Grzymisch J.1, Harrison I.1, Hartig M-S.23ORCID, Heinzel G.23, Hewitson M.23, Hollington D.16, Hoyland D.11, Hueller M.8, Inchauspé H.17, Jennrich O.1, Jetzer P.18, Johann U.19, Johlander B.1, Karnesis N.20, Kaune B.23, Killow C. J.21, Korsakova N.4, Lobo J. A.1415, López-Zaragoza J. P.14, Maarschalkerweerd R.1, Mance D.12, Martín V.1415, Martin-Polo L.1, Martin-Porqueras F.1, Martino J.4, McNamara P. W.1, Mendes J.1, Mendes L.1, Meshksar N.12, Nofrarias M.1415, Paczkowski S.23, Perreur-Lloyd M.21, Petiteau A.45, Plagnol E.4, Ramos-Castro J.22, Reiche J.23, Rivas F.23, Robertson D. I.21, Russano G.8, Sanjuan J.24, Slutsky J.25, Sopuerta C. F.1415, Sumner T.1624, Texier D.1, Thorpe J. I.25, Vetrugno D.8, Vitale S.8, Wanner G.32, Ward H.21, Wass P. J.1624, Weber W. J.8, Wissel L.23, Wittchen A.23, Zweifel P.12
Affiliation:
1. European Space Agency 2. Max Planck Institute for Gravitational Physics (Albert-Einstein-Institut) 3. Leibniz Universität Hannover 4. Université de Paris 5. Université Paris-Saclay 6. University of Trento 7. Trento Institute for Fundamental Physics and Application/INFN 8. Università di Trento 9. Istituto di Fotonica e Nanotecnologie 10. Università di Urbino Carlo Bo 11. University of Birmingham 12. ETH Zürich 13. The UK Astronomy Technology Centre 14. Institut de Ciències de l’Espai (ICE, CSIC) 15. Institut d’Estudis Espacials de Catalunya (IEEC) 16. Imperial College London 17. Universität Heidelberg 18. Universität Zürich 19. Airbus Defence and Space 20. Aristotle University of Thessaloniki 21. University of Glasgow 22. Universitat Politècnica de Catalunya 23. Universidad Loyola Andalucia 24. University of Florida 25. NASA Goddard Space Flight Center
Abstract
The tilt-to-length coupling during the LISA Pathfinder mission has been numerically and analytically modeled for particular time spans. In this work, we investigate the long-term stability of the coupling coefficients of this noise. We show that they drifted slowly (by 1 μm/rad and 6×10−6 in 100 days) and were strongly correlated to temperature changes within the satellite (8 μm/rad/K and 30×10−6/K). Based on analytical tilt-to-length coupling models, we attribute the temperature-driven coupling changes to rotations of the test masses and small distortions in the optical setup. Particularly, our findings lead to the conclusion that LISA Pathfinder’s optical baseplate was bent during the cooldown experiment, which started in late 2016 and lasted several months.
Published by the American Physical Society
2024
Funder
Bundesministerium für Wirtschaft und Energie Deutsche Forschungsgemeinschaft Centre National d’Etudes Spatiales Centre National de la Recherche Scientifique Observatoire de Paris, Université de Recherche Paris Sciences et Lettres Agence Nationale de la Recherche Agenzia Spaziale Italiana Istituto Nazionale di Fisica Nucleare Sezione di Padova Ministerio de Economía y Competitividad Generalitat de Catalunya Fundación General CSIC ETH Zürich Foundation European Space Agency Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung UK Space Agency Scottish Universities Physics Alliance University of Glasgow University of Birmingham Imperial College London National Aeronautics and Space Administration German Space Agency
Publisher
American Physical Society (APS)
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