Title :
Experimental activity toward GINGER (gyroscopes IN general relativity)
Author :
Belfi, J. ; Bosi, F. ; Di Virgilio, A. ; Santagata, R. ; Ortolan, A. ; Beverini, N. ; Carelli, G. ; Maccioni, E. ; Cuccato, D.
Author_Institution :
Sezione di Pisa, NFN, Pisa, Italy
fDate :
June 30 2014-July 4 2014
Abstract :
We report about the recent progresses toward the development of a laser gyroscope detector for a ground based measurement of the Earth´s relativistic frame dragging. The main part of the presented activity involves the control of the systematic errors related to the fluctuation of the cavity geometry and the active medium parameters. A new square ring laser 1.6 m in side, named “GP2”, has been built with the aim of setting its cavity shape as close as possible to a “perfect square”. This kind of setup will be the building block for an ultra-sensitive tri-axial rotation detector aiming at fundamental Physics applications.
Keywords :
general relativity; gyroscopes; laser cavity resonators; measurement by laser beam; optical sensors; ring lasers; Earth relativistic frame dragging; GINGER; Gyroscope IN GEneral Relativity; active medium parameters; cavity geometry; cavity shape; ground based measurement; laser gyroscope detector; square ring laser; ultrasensitive triaxial rotation detector; GINGER project; Length controls; Ring laser Gyroscopes;
Conference_Titel :
Laser Optics, 2014 International Conference
Conference_Location :
Saint Petersburg
Print_ISBN :
978-1-4799-3884-1
DOI :
10.1109/LO.2014.6886318
