Tilt-to-length coupling in LISA Pathfinder

Long-term stability

authored by: M. Armano, H. Audley, J. Baird, P. Binetruy, M. Born, D. Bortoluzzi, E. Castelli, A. Cavalleri, A. Cesarini, A. M. Cruise, K. Danzmann, M. De Deus Silva, I. Diepholz, G. Dixon, R. Dolesi, L. Ferraioli, V. Ferroni, E. D. Fitzsimons, M. Freschi, L. Gesa, D. Giardini, F. Gibert, R. Giusteri, C. Grimani, J. Grzymisch, I. Harrison, M. S. Hartig, G. Heinzel, M. Hewitson, D. Hollington, D. Hoyland, M. Hueller, H. Inchauspé, O. Jennrich, P. Jetzer, U. Johann, B. Johlander, N. Karnesis, B. Kaune, C. J. Killow, N. Korsakova, J. A. Lobo, J. P. López-Zaragoza, R. Maarschalkerweerd, D. Mance, V. Martín, L. Martin-Polo, F. Martin-Porqueras, J. Martino, P. W. McNamara, J. Mendes, L. Mendes, N. Meshksar, M. Nofrarias, S. Paczkowski, M. Perreur-Lloyd, A. Petiteau, E. Plagnol, J. Ramos-Castro, J. Reiche, F. Rivas, D. I. Robertson, G. Russano, J. Sanjuan, J. Slutsky, C. F. Sopuerta, T. Sumner, D. Texier, J. I. Thorpe, D. Vetrugno, S. Vitale, G. Wanner, H. Ward, P. J. Wass, W. J. Weber, L. Wissel, A. Wittchen, P. Zweifel
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.
Organisation(s): Institute of Gravitation Physics
External Organisation(s): European Space Research and Technology Centre (ESTEC)
Max Planck Institute for Gravitational Physics (Albert Einstein Institute)
Observatoire de Paris (OBSPARIS)
Université Paris-Saclay
University of Trento
Istituto Nazionale di Fisica Nucleare (INFN)
National Research Council Italy (CNR)
University of Urbino "Carlo Bo"
University of Birmingham
European Space Astronomy Centre
ETH Zurich
The UK Astronomy Technology Centre (UKATC)
Autonomous University of Barcelona (UAB)
Institute of Space Studies of Catalonia (IEEC)
European Space Operation Center (ESOC)
Imperial College London
Heidelberg University
Universität Zürich (UZH)
Airbus Group
Aristotle University of Thessaloniki (A.U.Th.)
University of Glasgow
Universitat Politècnica de Catalunya
Loyola University Andalusia
University of Florida
NASA Goddard Space Flight Center (NASA-GSFC)
Type: Article
Journal: Physical Review D
Volume: 110
No. of pages: 14
ISSN: 2470-0010
Publication date: 03.09.2024
Publication status: Published
Peer reviewed: Yes
ASJC Scopus subject areas: Nuclear and High Energy Physics
Electronic version(s): https://doi.org/10.48550/arXiv.2407.05852 (Access: Open)
https://doi.org/10.1103/PhysRevD.110.063005 (Access: Open)

BibTeX

@article{9cf30765b57e457ca36f1dcb2911e995,
title = "Tilt-to-length coupling in LISA Pathfinder: Long-term stability",
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.",
author = "M. Armano and H. Audley and J. Baird and P. Binetruy and M. Born and D. Bortoluzzi and E. Castelli and A. Cavalleri and A. Cesarini and Cruise, {A. M.} and K. Danzmann and {De Deus Silva}, M. and I. Diepholz and G. Dixon and R. Dolesi and L. Ferraioli and V. Ferroni and Fitzsimons, {E. D.} and M. Freschi and L. Gesa and D. Giardini and F. Gibert and R. Giusteri and C. Grimani and J. Grzymisch and I. Harrison and Hartig, {M. S.} and G. Heinzel and M. Hewitson and D. Hollington and D. Hoyland and M. Hueller and H. Inchausp{\'e} and O. Jennrich and P. Jetzer and U. Johann and B. Johlander and N. Karnesis and B. Kaune and Killow, {C. J.} and N. Korsakova and Lobo, {J. A.} and L{\'o}pez-Zaragoza, {J. P.} and R. Maarschalkerweerd and D. Mance and V. Mart{\'i}n and L. Martin-Polo and F. Martin-Porqueras and J. Martino and McNamara, {P. W.} and J. Mendes and L. Mendes and N. Meshksar and M. Nofrarias and S. Paczkowski and M. Perreur-Lloyd and A. Petiteau and E. Plagnol and J. Ramos-Castro and J. Reiche and F. Rivas and Robertson, {D. I.} and G. Russano and J. Sanjuan and J. Slutsky and Sopuerta, {C. F.} and T. Sumner and D. Texier and Thorpe, {J. I.} and D. Vetrugno and S. Vitale and G. Wanner and H. Ward and Wass, {P. J.} and Weber, {W. J.} and L. Wissel and A. Wittchen and P. Zweifel",
note = "Publisher Copyright: {\textcopyright} 2024 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the {"}https://creativecommons.org/licenses/by/4.0/{"}Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. Open access publication funded by the Max Planck Society.",
year = "2024",
month = sep,
day = "3",
doi = "10.48550/arXiv.2407.05852",
language = "English",
volume = "110",
journal = "Physical Review D",
issn = "2470-0010",
publisher = "American Institute of Physics",
number = "6",
}