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Authors: Belfi, J.* 
Beverini, N.* 
Bosi, F.* 
Carelli, G.* 
Cuccato, D.* 
De Luca, Gaetano* 
Di Virgilio, A.* 
Gebauer, A.* 
Maccioni, E.* 
Ortolan, A.* 
Porzio, A.* 
Saccorotti, Gilberto* 
Simonelli, A.* 
Terreni, G.* 
Title: Deep underground rotation measurements: GINGERino ring laser gyroscope in Gran Sasso
Issue Date: 2017
Series/Report no.: /88 (2017)
DOI: 10.1063/1.4977051
Keywords: Physics - Instrumentation and Detectors
Physics - Instrumentation and Detectors
Rotational Seismology
Abstract: GINGERino is a large frame laser gyroscope investigating the ground motion in the most inner part of the underground international laboratory of the Gran Sasso, in central Italy. It consists of a square ring laser with a $3.6$ m side. Several days of continuous measurements have been collected, with the apparatus running unattended. The power spectral density in the seismic bandwidth is at the level of $10^{-10} \rm{(rad/s)/\sqrt{Hz}}$. A maximum resolution of $30\,\rm{prad/s}$ is obtained with an integration time of few hundred seconds. The ring laser routinely detects seismic rotations induced by both regional earthquakes and teleseisms. A broadband seismic station is installed on the same structure of the gyroscope. First analysis of the correlation between the rotational and the translational signal are presented.
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