CERN Accelerating science

Article
Title	The EEE Project: a sparse array of telescopes for the measurement of cosmic ray muons
Author(s)	La Rocca, P (INFN, Catania ; Catania U.) ; Abbrescia, M (Enrico Fermi Ctr., Rome ; Bari U. ; INFN, Bari) ; Avanzini, C (Enrico Fermi Ctr., Rome ; INFN, Pisa ; Pisa U.) ; Baldini, L (Enrico Fermi Ctr., Rome ; INFN, Pisa ; Pisa U.) ; Ferroli, R Baldini (Enrico Fermi Ctr., Rome ; Frascati) ; Batignani, G (Enrico Fermi Ctr., Rome ; INFN, Pisa ; Pisa U.) ; Bencivenni, G (Frascati) ; Bossini, E (Enrico Fermi Ctr., Rome ; INFN, Siena ; Siena U.) ; Chiavassa, A (Enrico Fermi Ctr., Rome ; INFN, Turin ; Turin U.) ; Cicalò, C (Enrico Fermi Ctr., Rome ; INFN, Cagliari ; Cagliari U.) ; Cifarelli, L (Enrico Fermi Ctr., Rome ; INFN, Bologna ; Bologna U.) ; Coccetti, F (Enrico Fermi Ctr., Rome) ; Coccia, E (INFN, Rome2 ; Rome U., Tor Vergata) ; Corvaglia, A (Enrico Fermi Ctr., Rome ; INFN, Lecce ; Salento U.) ; Gruttola, D De (Enrico Fermi Ctr., Rome ; INFN, Salerno ; Salerno U.) ; De Pasquale, S (Enrico Fermi Ctr., Rome ; INFN, Salerno ; Salerno U.) ; Di Giovanni, A (Gran Sasso) ; D'Incecco, M (Gran Sasso) ; Dreucci, M (Frascati) ; Fabbri, F L (Frascati) ; Fattibene, E (INFN, CNAF) ; Ferraro, A (INFN, CNAF) ; Frolov, V (Dubna, JINR) ; Galeotti, P (Enrico Fermi Ctr., Rome ; INFN, Turin ; Turin U.) ; Garbini, M (Enrico Fermi Ctr., Rome ; INFN, Bologna ; Bologna U.) ; Gemme, G (INFN, Genoa ; Genoa U.) ; Gnesi, I (Enrico Fermi Ctr., Rome ; INFN, Turin ; Turin U.) ; Grazzi, S (Enrico Fermi Ctr., Rome ; INFN, Genoa ; Genoa U.) ; Gustavino, C (Gran Sasso) ; Hatzifotiadou, D (Enrico Fermi Ctr., Rome ; INFN, Bologna ; Bologna U. ; CERN) ; Liciulli, F (Enrico Fermi Ctr., Rome ; INFN, Bari) ; Maggiora, A (INFN, Turin ; Turin U.) ; Maragoto Rodriguez, O (INFN, Rome) ; Maron, G (INFN, CNAF) ; Martelli, B (INFN, CNAF) ; N Mazziotta, M (INFN, Bari) ; Miozzi, S (Enrico Fermi Ctr., Rome ; Frascati ; INFN, Rome2 ; Rome U., Tor Vergata) ; Nania, R (Enrico Fermi Ctr., Rome ; INFN, Bologna ; Bologna U.) ; Noferini, F (Enrico Fermi Ctr., Rome ; INFN, CNAF) ; Nozzoli, F (INFN, Rome) ; Panareo, M (Enrico Fermi Ctr., Rome ; INFN, Lecce ; Salento U.) ; Panetta, M (Enrico Fermi Ctr., Rome ; INFN, Lecce ; Salento U.) ; Paoletti, R (Enrico Fermi Ctr., Rome ; INFN, Siena ; Siena U.) ; Park, W (World Lab., Geneva) ; Perasso, L (Enrico Fermi Ctr., Rome ; INFN, Genoa ; Genoa U.) ; Pilo, F (Enrico Fermi Ctr., Rome ; INFN, Pisa ; Pisa U.) ; Piragino, G (Enrico Fermi Ctr., Rome ; INFN, Turin ; Turin U.) ; Riggi, F (Enrico Fermi Ctr., Rome ; INFN, Catania ; Catania U.) ; Righini, G C (Enrico Fermi Ctr., Rome) ; Rizzi, M (INFN, Bari) ; Sartorelli, G (Enrico Fermi Ctr., Rome ; INFN, Bologna ; Bologna U.) ; Scapparone, E (INFN, Bologna ; Bologna U.) ; Schioppa, M (Enrico Fermi Ctr., Rome ; INFN, Cosenza ; Calabria U.) ; Scribano, A (Enrico Fermi Ctr., Rome ; INFN, Pisa ; Pisa U.) ; Selvi, M (INFN, Bologna ; Bologna U.) ; Serci, S (INFN, Cagliari ; Cagliari U.) ; Siddi, E (INFN, Cagliari ; Cagliari U.) ; Squarcia, S (INFN, Genoa ; Genoa U.) ; Stori, L (Enrico Fermi Ctr., Rome) ; Taiuti, M (INFN, Genoa ; Genoa U.) ; Terreni, G (INFN, Pisa ; Pisa U.) ; Visnyei, O B (World Lab., Geneva) ; C Vistoli, M (INFN, CNAF) ; Votano, L (Gran Sasso) ; Williams, M C S (INFN, Bologna ; Bologna U. ; CERN) ; Zani, S (INFN, CNAF) ; Zichichi, A (Enrico Fermi Ctr., Rome ; INFN, Bologna ; Bologna U. ; CERN) ; Zuyeuski, R (Enrico Fermi Ctr., Rome ; CERN)
Publication	2016
Number of pages	12
In:	JINST 11 (2016) C12056
In:	14th Topical Seminar on Innovative Particle and Radiation Detectors , Siena, Italy, 3 - 6 Oct 2016, pp.C12056
DOI	10.1088/1748-0221/11/12/C12056
Subject category	Detectors and Experimental Techniques
Abstract	The Extreme Energy Events (EEE) Project is meant to be the most extensive experiment to detect secondary cosmic particles in Italy. To this aim, more than 50 telescopes have been built at CERN and installed in high schools distributed all over the Italian territory. Each EEE telescope comprises three large area Multigap Resistive Plate Chambers (MRPCs) and is capable of reconstructing the trajectories of the charged particles traversing it with a good angular resolution. The excellent performance of the EEE telescopes allows a large variety of studies, from measuring the local muon flux in a single telescope, to detecting extensive air showers producing time correlations in the same metropolitan area, to searching for large-scale correlations between showers detected in telescopes tens, hundreds or thousands of kilometers apart. In addition to its scientific goal, the EEE Project also has an educational and outreach objective, its aim being to motivate young people by involving them directly in a real experiment. High school students and teachers are involved in the construction, testing and start-up of the EEE telescope in their school, then in its maintenance and data-acquisition, and later in the analysis of the data. During the last couple of years a great boost has been given to the EEE Project through the organization of simultaneous and centralized data taking with the whole telescope array. The raw data from all telescopes are transferred to CNAF (Bologna), where they are reconstructed and stored. The data are currently being analyzed, looking at various topics: variation of the rate of cosmic muons with time, upward going muons, muon lifetime, search for anisotropies in the muon angular distribution and for time coincidences between stations. In this paper an overall description of the experiment is given, including the design, construction and performance of the telescopes. The operation of the whole array is also presented by showing the most recent physics results.
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