Details
| Original language | English |
|---|---|
| Article number | 111101 |
| Number of pages | 7 |
| Journal | Physical review letters |
| Volume | 123 |
| Issue number | 11 |
| Publication status | Published - 11 Sept 2019 |
Abstract
We 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.
ASJC Scopus subject areas
- Physics and Astronomy(all)
- General Physics and Astronomy
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In: Physical review letters, Vol. 123, No. 11, 111101, 11.09.2019.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - LISA Pathfinder Performance Confirmed in an Open-Loop Configuration
T2 - Results from the Free-Fall Actuation Mode
AU - Armano, M.
AU - Audley, H.
AU - Baird, J.
AU - Binetruy, P.
AU - Born, M.
AU - Bortoluzzi, D.
AU - Castelli, E.
AU - Cavalleri, A.
AU - Cesarini, A.
AU - Cruise, A. M.
AU - Danzmann, K.
AU - De Deus Silva, M.
AU - Diepholz, I.
AU - Dixon, G.
AU - Dolesi, R.
AU - Ferraioli, L.
AU - Ferroni, V.
AU - Fitzsimons, E. D.
AU - Freschi, M.
AU - Gesa, L.
AU - Gibert, F.
AU - Giardini, D.
AU - Giusteri, R.
AU - Grimani, C.
AU - Grzymisch, J.
AU - Harrison, I.
AU - Hartig, M-s.
AU - Heinzel, G.
AU - Hewitson, M.
AU - Hollington, D.
AU - Hoyland, D.
AU - Hueller, M.
AU - Inchauspé, H.
AU - Jennrich, O.
AU - Jetzer, P.
AU - Karnesis, N.
AU - Kaune, B.
AU - Korsakova, N.
AU - Killow, C. J.
AU - Lobo, J. A.
AU - Liu, L.
AU - López-zaragoza, J. P.
AU - Maarschalkerweerd, R.
AU - Mance, D.
AU - Meshksar, N.
AU - Martín, V.
AU - Martin-polo, L.
AU - Martino, J.
AU - Martin-porqueras, F.
AU - Mateos, I.
AU - Mcnamara, P. W.
AU - Mendes, J.
AU - Mendes, L.
AU - Nofrarias, M.
AU - Paczkowski, S.
AU - Perreur-lloyd, M.
AU - Petiteau, A.
AU - Pivato, P.
AU - Plagnol, E.
AU - Ramos-castro, J.
AU - Reiche, J.
AU - Robertson, D. I.
AU - Rivas, F.
AU - Russano, G.
AU - Slutsky, J.
AU - Sopuerta, C. F.
AU - Sumner, T.
AU - Texier, D.
AU - Thorpe, J. I.
AU - Vetrugno, D.
AU - Vitale, S.
AU - Wanner, G.
AU - Ward, H.
AU - Wass, P. J.
AU - Weber, W. J.
AU - Wissel, L.
AU - Wittchen, A.
AU - Zweifel, P.
N1 - Funding information: This 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. Inchauspé would also like to acknowledge the financial support of the UnivEarthS Labex program at Sorbonne Paris Cité (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).
PY - 2019/9/11
Y1 - 2019/9/11
N2 - We 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.
AB - We 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.
UR - http://www.scopus.com/inward/record.url?scp=85072685933&partnerID=8YFLogxK
U2 - 10.1103/PhysRevLett.123.111101
DO - 10.1103/PhysRevLett.123.111101
M3 - Article
VL - 123
JO - Physical review letters
JF - Physical review letters
SN - 0031-9007
IS - 11
M1 - 111101
ER -