Belfi J.,National Institute of Nuclear Physics, Italy |
Beverini N.,National Institute of Nuclear Physics, Italy |
Beverini N.,University of Pisa |
Bosi F.,National Institute of Nuclear Physics, Italy |
And 16 more authors.
Review of Scientific Instruments | Year: 2017
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 (rad/s)/√Hz. A maximum resolution of 30 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 is presented. © 2017 Author(s).