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

doi:10.1088/0264-9381/32/4/045014

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 journal › Article › peer-review

5 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 language	English (US)
Article number	045014
Journal	Classical and Quantum Gravity
Volume	32
Issue number	4
DOIs	https://doi.org/10.1088/0264-9381/32/4/045014
State	Published - Feb 19 2015
Externally published	Yes

Keywords

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

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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10.1088/0264-9381/32/4/045014

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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

Thermo-elastic induced phase noise in the LISA Pathfinder spacecraft. / 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.

In: Classical and Quantum Gravity, Vol. 32, No. 4, 045014, 19.02.2015.

Research output: Contribution to journal › Article › peer-review

Gibert, F, Nofrarias, M, Karnesis, N, Gesa, L, Martín, V, Mateos, I, Lobo, A, Flatscher, R, Gerardi, D, Burkhardt, J, Gerndt, R, Robertson, DI, Ward, H, McNamara, PW, 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, vol. 32, no. 4, 045014. https://doi.org/10.1088/0264-9381/32/4/045014

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. / Thermo-elastic induced phase noise in the LISA Pathfinder spacecraft. In: Classical and Quantum Gravity. 2015 ; Vol. 32, No. 4.

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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).",

keywords = "Gravitational waves, LISA Pathfinder, Laser interferometer, Low frequency, Temperature noise, Thermal diagnostics",

author = "F. Gibert and M. Nofrarias and N. Karnesis and L. Gesa and V. Mart{\'i}n and I. Mateos and A. Lobo and R. Flatscher and D. Gerardi and J. Burkhardt and R. Gerndt and Robertson, {D. I.} and H. Ward and McNamara, {P. W.} and F. Guzm{\'a}n and M. Hewitson and I. Diepholz and J. Reiche and G. Heinzel and K. Danzmann",

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AU - Gibert, F.

AU - Nofrarias, M.

AU - Karnesis, N.

AU - Gesa, L.

AU - Martín, V.

AU - Mateos, I.

AU - Lobo, A.

AU - Flatscher, R.

AU - Gerardi, D.

AU - Burkhardt, J.

AU - Gerndt, R.

AU - Robertson, D. I.

AU - Ward, H.

AU - McNamara, P. W.

AU - Guzmán, F.

AU - Hewitson, M.

AU - Diepholz, I.

AU - Reiche, J.

AU - Heinzel, G.

AU - Danzmann, K.

PY - 2015/2/19

Y1 - 2015/2/19

N2 - 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).

AB - 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).

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KW - LISA Pathfinder

KW - Laser interferometer

KW - Low frequency

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Thermo-elastic induced phase noise in the LISA Pathfinder spacecraft

Abstract

Keywords

ASJC Scopus subject areas

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