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Upper limits on stray force noise for LISA

L Carbone1, A Cavalleri2, R Dolesi1, C D Hoyle1, M Hueller1, S Vitale1 and W J Weber1

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We have developed a torsion pendulum facility for LISA gravitational reference sensor ground testing that allows us to put significant upper limits on residual stray forces exerted by LISA-like position sensors on a representative test mass and to characterize specific sources of disturbances for LISA. We present here the details of the facility, the experimental procedures used to maximize its sensitivity and the techniques used to characterize the pendulum itself that allowed us to reach a torque sensitivity below 20 fN m Hz−1/2 from 0.3 to 10 mHz. We also discuss the implications of the obtained results for LISA.


PACS

04.80.Nn Gravitational wave detectors and experiments

07.10.Pz Instruments for strain, force, and torque

MSC

83C35 Gravitational waves

Subjects

Instrumentation and measurement

Gravitation and cosmology

Dates

Issue 5 (7 March 2004)

Received 16 September 2003

Published 6 February 2004



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