Dynamical response of the Galileo Galilei on the ground rotor to test the equivalence principle: Theory, simulation, and experiment. II. The rejection of common mode forces

Journal Article · Wed Mar 15 00:00:00 EST 2006 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.2173076· OSTI ID:20778927

Comandi, G L; Toncelli, R; Chiofalo, M L; Bramanti, D; Nobili, A M ^[1]

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1. Istituto Nazionale di Fisica Nucleare (INFN), Sezione di Pisa, Largo B. Pontecorvo 3, I-56127 Pisa (Italy) and Department of Physics, University of Bologna, Bologna (Italy)

'Galileo Galilei on the ground' (GGG) is a fast rotating differential accelerometer designed to test the equivalence principle (EP). Its sensitivity to differential effects, such as the effect of an EP violation, depends crucially on the capability of the accelerometer to reject all effects acting in common mode. By applying the theoretical and simulation methods reported in Part I of this work, and tested therein against experimental data, we predict the occurrence of an enhanced common mode rejection of the GGG accelerometer. We demonstrate that the best rejection of common mode disturbances can be tuned in a controlled way by varying the spin frequency of the GGG rotor.

• OSTI ID: 20778927
• Journal Information: Review of Scientific Instruments, Vol. 77, Issue 3; Other Information: DOI: 10.1063/1.2173076; (c) 2006 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0034-6748
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ACCELEROMETERS
DISTURBANCES
EQUIVALENCE PRINCIPLE
ROTORS
SENSITIVITY
SIMULATION