Speaker
Dr
Angela Dora Vittoria Di Virgilio
(INFN - Pisa)
Description
Ring-Lasers are commonly employed as gyroscope, since they measure angular velocity for the Sagnac Effect. The range of applicability is very wide: from aircraft guidance, to geodesy and geophysics. The large ring G in the Laser Ranging station of Wettzell (Baviera) has obtained the accuracy of fractions of prad/s, close to the one required to provide a tool for general relativity test. In particular an underground experiment has been proposed, G-GranSasso, which can measure the gravitomagnetic effect of the Earth (Lense-Thirring effect) with 1% accuracy in few years of data taking. The ringlaser will be described in details, reporting the most recent progresses obtained with the large ring G in Wettzel (16m perimeter ) and with our middle size prototype G-Pisa (5.4 m perimeter).
Primary author
Dr
Angela Dora Vittoria Di Virgilio
(INFN - Pisa)
