A torsion pendulum with 2 soft degrees of freedom (DOF), realized by off-axis cascading two torsion fibers, has been built and operated. This instrument allows simultaneous measurement of force and torque acting on the suspended test mass, approaching free-fall condition down to a few mHz. It was developed for ground testing on two DOFs, before the launch, of the Gravitational Reference Sensor of the LISA-Pathfinder mission. We will report on the results of some measurement campaigns devoted in particular to the characterization of force to torque and torque to force actuation cross-talks. We will also indicate further possible upgrades of the facility for application for ground testing of future space gravitational wave antennas or other space experiments requiring drag-free control.

Bassan, M., Cavalleri, A., De Laurentis, M., De Marchi, F., De Rosa, R., Di Fiore, L., et al. (2017). A two-stage torsion pendulum for ground testing free fall conditions on two degrees of freedom. ??????? it.cilea.surplus.oa.citation.tipologie.CitationProceedings.prensentedAt ??????? Cosmic Rays International Symposium 2017, Capri (NA) - italy [10.1016/j.nuclphysbps.2017.06.027].

A two-stage torsion pendulum for ground testing free fall conditions on two degrees of freedom

Bassan M.;Pucacco G.;
2017-01-01

Abstract

A torsion pendulum with 2 soft degrees of freedom (DOF), realized by off-axis cascading two torsion fibers, has been built and operated. This instrument allows simultaneous measurement of force and torque acting on the suspended test mass, approaching free-fall condition down to a few mHz. It was developed for ground testing on two DOFs, before the launch, of the Gravitational Reference Sensor of the LISA-Pathfinder mission. We will report on the results of some measurement campaigns devoted in particular to the characterization of force to torque and torque to force actuation cross-talks. We will also indicate further possible upgrades of the facility for application for ground testing of future space gravitational wave antennas or other space experiments requiring drag-free control.
Cosmic Rays International Symposium 2017
Capri (NA) - italy
Rilevanza internazionale
su invito
2017
2017
Settore FIS/01 - FISICA SPERIMENTALE
English
Torsion pendulum; free-fall; inertial sensor; space gravitational-wave detectors
Intervento a convegno
Bassan, M., Cavalleri, A., De Laurentis, M., De Marchi, F., De Rosa, R., Di Fiore, L., et al. (2017). A two-stage torsion pendulum for ground testing free fall conditions on two degrees of freedom. ??????? it.cilea.surplus.oa.citation.tipologie.CitationProceedings.prensentedAt ??????? Cosmic Rays International Symposium 2017, Capri (NA) - italy [10.1016/j.nuclphysbps.2017.06.027].
Bassan, M; Cavalleri, A; De Laurentis, M; De Marchi, F; De Rosa, R; Di Fiore, L; Dolesi, R; Finetti, N; Garufi, F; Grado, A; Hueller, M; Milano, L; Pu...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2108/211365
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