A local control system for the test masses of the Virgo gravitational wave detector

Details A local control system for the test masses of the Virgo gravitational wave detector A local control system for the test masses of the Virgo gravitational wave detector

Mar 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004aph....20..617a&link_type=abstract

Astroparticle Physics, Volume 20, Issue 6, p. 617-628.

Physics

14

Control Systems, Gravitational Wave Detectors And Experiments

Scientific paper

The mirrors of interferometric detectors of gravitational waves (GW) are suspended in order to be isolated from external disturbances. A local control system able to keep them correctly aligned and to damp the angular modes of the suspension is necessary. In this paper we present the solution adopted for Virgo based on a CCD camera sensor and on digital controls. With this solution the mirrors are kept aligned at the level of less than 1 μradrms, enough to lock the interferometer and start the automatic alignment system.

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