Last Update: October 2000 |
LAGO2
Collaboration:
Baldi Paolo, Campari Enrico, Casula Giuseppe, Focardi Sergio, Palmonari Federico
Bologna University & INFN, Bologna, Italy
Experiment site: Lago Brasimone(Italy)
1. Goal of the experiment
Test of the Newtons law in the geophysical region of distances. The experiment consists in measuring gravity variations induced in a tunnel under a lake by changes of waters level. The instrument used is a superconducting gravimeter, the most precise gravimeter existent at this moment.
2. Physics achievements during the year 2000
A calibration of the superconducting gravimeter performed by means an absolute gravimeter allowed a reanalysis of a preceding experiment. The Newtons law results verified at the 0.1% level at distances of tenths of meters.
3. INFN contribution in terms of manpower and financial support
INFN participates to the collaboration with a group from the Bologna section. Other peoples belong to Bologna University and ING (National Institute of Geophysics)
I - 5 physicist involved
II - Invested about 0.1 GL in three years
4. Number of publications in refereed journals:1
5. Number of talks to conferences: 1
6. Number of undergraduate and doctoral thesis in the experiment
n 1 in progress
7. Leadership in the experiment
All peoples involved in the experiment belong to Bologna INFN, Bologna University and Bologna section of ING
8. Innovative Instruments
Control of the superconducting gravimeter which is run in the ENEA Brasimone laboratory, eighty km from Bologna, using Internet.
Project of changes to take place on the superconducting gravimeter in order to arrange the instrument for measuring the constant G of the Newtons law at distances of 1 meter.
9. Competing experiment
no
10. Committee which has reviewed the experiment
The national group 2 INFN committee