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Astroparticle Physics 21 (2004) 325-335
Feasibility of a magnetic suspension for second generation Gravitational Wave interferometers
Monica Varvella, Enrico Calloni, Luciano Di Fiore, Leopoldo Milano, Nicolas Arnaud1

This paper deals with the use of a magnetic levitation system as a part of a multi-stage seismic attenuator for gravitational wave interferometric antennas. The proposed configuration uses permanent magnets in attraction to balance the suspended weight, plus a closed loop position control to obtain a stable levitation. The system is analyzed using a MATLAB simulation code to compute the forces exerted by extended magnets. The validity of this model has been tested by a comparison with the experimental data from a levitated suspension prototype.
1 :  LAL - Laboratoire de l'Accélérateur Linéaire
Physique/Astrophysique/Cosmologie et astrophysique extra-galactique

Planète et Univers/Astrophysique

Physique/Relativité Générale et Cosmologie Quantique

Physique/Physique/Instrumentations et Détecteurs
Gravitational waves – Magnetic levitation – Suspended interferometer – Virgo superattenuator – Control systems
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