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

fYear

2014

fDate

June 30 2014-July 4 2014

Firstpage

1

Lastpage

1

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Laser Optics, 2014 International Conference

Conference_Location

Saint Petersburg

Print_ISBN

978-1-4799-3884-1

Type

conf

DOI

10.1109/LO.2014.6886318

Filename

6886318