Thermo-elastic induced phase noise in the LISA Pathfinder spacecraft

F. Gibert, M. Nofrarias, N. Karnesis, L. Gesa, V. Martín, I. Mateos, A. Lobo, R. Flatscher, D. Gerardi, J. Burkhardt, R. Gerndt, D. I. Robertson, H. Ward, P. W. McNamara, F. Guzmán, M. Hewitson, I. Diepholz, J. Reiche, G. Heinzel, K. Danzmann

Research output: Contribution to journalArticle

3 Scopus citations

Abstract

During the on-station thermal test campaign of the LISA Pathfinder, the diagnostics subsystem was tested in nearly space conditions for the first time after integration in the satellite. The results showed the compliance of the temperature measurement system, obtaining temperature noise around 10-4 K Hz-1/2 in the frequency band 1-30 MHz. In addition, controlled injection of heat signals to the suspension struts anchoring the LISA Technology Package (LTP) core assembly to the satellite structure allowed us to experimentally estimate, for the first time, the phase noise contribution through thermo-elastic distortion of the LTP interferometer, the satellite's main instrument. Such contribution was found to be at 10-12 MHz-1/2, a factor of 30 below the measured noise at the lower end of the measurement bandwidth (1 MHz).

Original languageEnglish (US)
Article number045014
JournalClassical and Quantum Gravity
Volume32
Issue number4
DOIs
StatePublished - Feb 19 2015

Keywords

  • Gravitational waves
  • LISA Pathfinder
  • Laser interferometer
  • Low frequency
  • Temperature noise
  • Thermal diagnostics

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Fingerprint Dive into the research topics of 'Thermo-elastic induced phase noise in the LISA Pathfinder spacecraft'. Together they form a unique fingerprint.

  • Cite this

    Gibert, F., Nofrarias, M., Karnesis, N., Gesa, L., Martín, V., Mateos, I., Lobo, A., Flatscher, R., Gerardi, D., Burkhardt, J., Gerndt, R., Robertson, D. I., Ward, H., McNamara, P. W., Guzmán, F., Hewitson, M., Diepholz, I., Reiche, J., Heinzel, G., & Danzmann, K. (2015). Thermo-elastic induced phase noise in the LISA Pathfinder spacecraft. Classical and Quantum Gravity, 32(4), [045014]. https://doi.org/10.1088/0264-9381/32/4/045014