Speaker
Description
Gingerino, prototype for the GINGER experiment, is a ring laser gyroscope that measures the Earth angular velocity, exploiting the Sagnac effect.
Such a measurement, other than for geophysical purposes, is for fundamental physics measurements, if performed with precision and accuracy better than one part over $10^9$.
GINGER is a multipurpose experiment, and a few pipelines are developed for its data analysis.
A geophysics dedicated pipeline is meant to be fast, with suitable filters and data decimation; the high sensitivity analysis is developed in more directions: correcting laser non-linearities, by expansion in series of the “raw” signal (linearization) and linear regression methods; utilizing a double Sagnac signal, which allows to improve of a factor 2 the signal-to-noise ratio, and monitoring the double signal as a feedback on data.
Such methods are described, and current results on Gingerino data.
