Feb 19 – 21, 2019
"Sapienza" University, Phys. Dept. Marconi
Europe/Rome timezone

The LAG experiment

Feb 19, 2019, 4:52 PM
17m
Aula Amaldi ("Sapienza" University, Phys. Dept. Marconi)

Aula Amaldi

"Sapienza" University, Phys. Dept. Marconi

Rome
talk Gravity: Experiments Gravity Experiments

Speaker

Dr Luciano Di Fiore (INFN - Napoli)

Description

In a laboratory gravitational experiment one of the most critical elements is represented by the source of the gravitational field. For state-of-art measurements, a precise characterization of the field and the possibility to modulate the amplitude are needed. Usually one or more moving masses are used. We describe a new actuation technique for gravity experiments based on a liquid Field Mass. The basic idea is to modulate the gravity force acting on a test mass by controlling the level of a liquid in a suitable container. This allows us to produce a periodically varying gravity force without moving parts (apart the liquid level) close to the Test Mass. Italian INFN (National Institute of Nuclear Physics) has recently funded a R&D experiment, named LAG (Liquid Actuated Gravity) to test principle of operation and performance of the liquid gravity actuator. We will describe in detail the most relevant aspects of the experiment and discuss how it can be used in gravity measurements. In particular we analyse a proposed application for improving test of the inverse square law in the mm to cm region.

Primary authors

Dr Luciano Di Fiore (INFN - Napoli) Prof. Massimo Bassan (INFN- Roma Tor Vergata and Dipartimento di Fisica, Università di Roma “Tor Vergata") Dr Rosario De Rosa (INFN-Napoli and Dipartimento di Fisica, Università di Napoli “Federico II") Prof. Fabio Garufi (INFN-Napoli and Dipartimento di Fisica, Università di Napoli “Federico II") Dr Aniello Grado (INFN-Napoli and INAF - Osservatorio Astronomico di Capodimonte, I-80126 Napoli, Italy) Dr Yury Minenkov (INFN -Roma Tor Vergata) Prof. Giuseppe Pucacco (INFN- Roma Tor Vergata and Dipartimento di Fisica, Università di Roma “Tor Vergata") Dr Massimo Visco

Presentation materials