Speaker
Ms
Maria Paola Panetta
(INFN Lecce)
Description
The EEE (Extreme Energy Event) Project is an experiment to study high energy extensive air
showers (EAS) over a very large area, using an array of muon telescopes, based on positionsensitive
Multigap Resistive Plate Chambers. Each telescope is composed by three MRPC, with an
active area of 0.82 x 1.58 m2. Each chamber is segmented into 24 strips, and a readout at the two
ends. Strip size and measurement of the time difference at the two ends, provide an overall spatial
resolution of about 7 mm along the two coordinates. A VME-based data acquisition include a
trigger card, 144 TDC channels and a GPS unit for remote synchronization.
At present the array is composed of more than 40 stations, located in Italian high schools, INFN
sections (total area 3 x 105 km2) and at CERN, and most of them were independently taking data
since several years. A new combined run (RUN 1) has started in February 2015, with more than 20
telescopes taking data simultaneously and a collected statistics larger than 5 x 109 reconstructed
events.
An overview of the experiment, experience on a several year running period and some results
from physics analyses will be given. Studies on correlated muons from the same EAS in many
metropolitan areas, for distances up to ~2 km, solar events and Forbush decreases observed at the
same time by several stations, upgoing low energy tracks and angular distributions of the detected
muons, also making use of equatorial coordinates, will be shown.
Collaboration
EEE Collaboration
Primary author
Ms
Maria Paola Panetta
(INFN Lecce)
