Regular Article - Experimental Physics
Sensitivity limit investigation of a Sagnac gyroscope through linear regression analysis
Sagnac gyroscope sensitivity limit
INFN Sez. di Pisa, Largo B. Pontecorvo 3, Pisa, Italy
2 Dipartimento di Fisica Ettore Pancini, Università di Napoli Federico II and INFN, Complesso Univ. Monte Sant’Angelo, Via Cintia, Naples, Italy
3 Dipartimento di Fisica Enrico Fermi, Università di Pisa, Largo B. Pontecorvo 3, Pisa, Italy
4 INFN-National Laboratories of Legnaro, viale dell’Università 2, 35020, Legnaro, PD, Italy
5 CNR-SPIN and INFN, Napoli, Complesso Univ. Monte Sant’Angelo, Via Cintia, Naples, Italy
Accepted: 30 April 2021
Published online: 8 May 2021
The sensitivity to angular rotation of the top class Sagnac gyroscope GINGERINO is carefully investigated with standard statistical means, using 103 days of continuous operation and the available geodesic measurements of the Earth angular rotation rate. All features of the Earth rotation rate are correctly reproduced. The unprecedented sensitivity of fractions of frad/s is attained for long term runs. This excellent sensitivity and stability put Sagnac gyroscopes at the forefront for fundamental physics, in particular for tests of general relativity and Lorentz violation, where the sensitivity plays the key role to provide reliable data for deeper theoretical investigations.
© The Author(s) 2021
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