Eur. Phys. J. Plus (2012) 127: 27
https://doi.org/10.1140/epjp/i2012-12027-9

Regular Article

Absolute gravity acceleration measurement in atomic sensor laboratories

¹ Dipartimento di Fisica e Astronomia and LENS, Università di Firenze - INFN Sezione di Firenze, via Sansone 1 - Polo Scientifico, I-50019, Sesto Fiorentino, Firenze, Italy
⁴ Dipartimento di Ingegneria Elettrica, Elettronica e Informatica, Università degli Studi di Catania, Catania, Italy

^* e-mail: marella.deangelis@fi.infn.it

Received: 5 September 2011
Revised: 25 January 2012
Accepted: 14 February 2012
Published online: 6 March 2012

Abstract

This paper reports the results from the accurate measurement of the acceleration of gravity g taken at two separate premises in the Polo Scientifico of the Florence University (Italy). In these laboratories, two separate experiments aiming at measuring the Newtonian constant and testing the measurement of forces with high spatial resolution are in progress. Both experiments require an independent knowledge on the local value of g. Gravity measurements were conducted using an FG5 absolute gravimeter, and accompanied by seismic recordings for evaluating the noise condition at the site. The absolute accelerations of gravity at the two laboratories are (980 492 160.6 ± 4.0) μGal and (980 492 048.3 ± 3.0) μGal for the European Laboratory for Non-Linear Spectroscopy (LENS) and Dipartimento di Fisica e Astronomia, respectively. Other than for the two referenced experiments, the data here presented will serve as a benchmark for any future study requiring an accurate knowledge of the absolute value of the acceleration of gravity in the study region.