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Proceedings Paper

Position sensors for flight testing of LISA drag-free control
Author(s): William J. Weber; Daniele Bortoluzzi; Antonella Cavalleri; Ludovico Carbone; Mauro Da Lio; Rita Dolesi; Giorgio Fontana; C. D. Hoyle; Mauro Hueller; Stefano Vitale
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Paper Abstract

Space-based detection of gravitational radiation is limited at low frequencies by stray force contamination of the orbits of ideally 'free-falling' test masses. Shielding a test mass from external forces with a satellite requires precision position sensing that does not itself introduce excessive stray force or springlike coupling to satellite motion. The LISA (Laser Interferometer Space Antenna) mission to observe gravitational waves between 0.1 and 1000 mHz must limit stray acceleration to the fm/s2 square root Hz level, with satellite position control at the nm\rthz\ level. We present here a design, and a discussion of electrostatic disturbances, for a capacitive position sensor for LISA 'drag-free' control, which will be flight-tested with the LISA Technology Package (LTP).

Paper Details

Date Published: 26 February 2003
PDF: 12 pages
Proc. SPIE 4856, Gravitational-Wave Detection, (26 February 2003); doi: 10.1117/12.458564
Show Author Affiliations
William J. Weber, Univ. degli Studi di Trento (Italy)
Daniele Bortoluzzi, Univ. degli Studi di Trento (Italy)
Antonella Cavalleri, Ctr. Fisica degli Stati Aggregati (Italy)
Ludovico Carbone, Univ. degli Studi di Trento (Italy)
Mauro Da Lio, Univ. degli Studi di Trento (Italy)
Rita Dolesi, Univ. degli Studi di Trento (Italy)
Giorgio Fontana, Univ. degli Studi di Trento (Italy)
C. D. Hoyle, Univ. degli Studi di Trento (Italy)
Mauro Hueller, Univ. degli Studi di Trento (Italy)
Stefano Vitale, Univ. degli Studi di Trento (Italy)

Published in SPIE Proceedings Vol. 4856:
Gravitational-Wave Detection
Peter Saulson; Adrian M. Cruise, Editor(s)

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