Details
| Original language | English |
|---|---|
| Article number | 042007 |
| Journal | Physical Review D |
| Volume | 111 |
| Issue number | 4 |
| Publication status | Published - 15 Feb 2025 |
Abstract
A precise characterization of the magnetic properties of LISA Pathfinder free falling test-masses is of special interest for future gravitational wave observatory in space. Magnetic forces have an important impact on the instrument sensitivity in the low frequency regime below the millihertz. In this paper we report on the magnetic injection experiments performed throughout LISA Pathfinder operations. We show how these experiments allowed a high precision estimate of the instrument magnetic parameters. The remanent magnetic moment was found to have a modulus of (0.245±0.081) nAm2, the x-component of the background magnetic field within the test masses position was measured to be (414±74) nT and its gradient had a value of (-7.4±2.1) μT/m. Finally, we also measured the test mass magnetic susceptibility at 5 mHz to be (-3.3723±0.0069)×10-5. All results are in agreement with on-ground estimates.
ASJC Scopus subject areas
- Physics and Astronomy(all)
- Nuclear and High Energy Physics
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In: Physical Review D, Vol. 111, No. 4, 042007, 15.02.2025.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Precision measurements of the magnetic parameters of LISA Pathfinder test masses
AU - LISA Pathfinder Collaboration
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 - Giardini, D.
AU - Gibert, F.
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 - Liu, L.
AU - Lobo, J. A.
AU - López-Zaragoza, J. P.
AU - Maarschalkerweerd, R.
AU - Mance, D.
AU - Martín, V.
AU - Martino, J.
AU - Martin-Polo, L.
AU - Martin-Porqueras, F.
AU - Meshksar, N.
AU - Paczkowski, S.
AU - Reiche, Jens
AU - Wanner, G.
AU - Wittchen, A.
N1 - Publisher Copyright: © 2025 American Physical Society. American Physical Society.
PY - 2025/2/15
Y1 - 2025/2/15
N2 - A precise characterization of the magnetic properties of LISA Pathfinder free falling test-masses is of special interest for future gravitational wave observatory in space. Magnetic forces have an important impact on the instrument sensitivity in the low frequency regime below the millihertz. In this paper we report on the magnetic injection experiments performed throughout LISA Pathfinder operations. We show how these experiments allowed a high precision estimate of the instrument magnetic parameters. The remanent magnetic moment was found to have a modulus of (0.245±0.081) nAm2, the x-component of the background magnetic field within the test masses position was measured to be (414±74) nT and its gradient had a value of (-7.4±2.1) μT/m. Finally, we also measured the test mass magnetic susceptibility at 5 mHz to be (-3.3723±0.0069)×10-5. All results are in agreement with on-ground estimates.
AB - A precise characterization of the magnetic properties of LISA Pathfinder free falling test-masses is of special interest for future gravitational wave observatory in space. Magnetic forces have an important impact on the instrument sensitivity in the low frequency regime below the millihertz. In this paper we report on the magnetic injection experiments performed throughout LISA Pathfinder operations. We show how these experiments allowed a high precision estimate of the instrument magnetic parameters. The remanent magnetic moment was found to have a modulus of (0.245±0.081) nAm2, the x-component of the background magnetic field within the test masses position was measured to be (414±74) nT and its gradient had a value of (-7.4±2.1) μT/m. Finally, we also measured the test mass magnetic susceptibility at 5 mHz to be (-3.3723±0.0069)×10-5. All results are in agreement with on-ground estimates.
UR - http://www.scopus.com/inward/record.url?scp=85218130121&partnerID=8YFLogxK
U2 - 10.1103/PhysRevD.111.042007
DO - 10.1103/PhysRevD.111.042007
M3 - Article
AN - SCOPUS:85218130121
VL - 111
JO - Physical Review D
JF - Physical Review D
SN - 2470-0010
IS - 4
M1 - 042007
ER -