Abstract
The Extreme Energy Events (EEE) Project is an experiment aimed at the detection of secondary cosmic ray muons. It consists of a sparse array of about 60 telescopes, based on Multigap Resistive Plate Chambers (MRPCs), mostly distributed throughout the Italian territory, mainly in high schools locations, and at CERN. The telescopes are now operational and taking data since more than ten years with a high duty cycle and detection efficiency. The analysis activity is currently in progress and focused on several items, including the detailed study of the muon ux under dfferent conditions, its connection with atmospheric and solar events, the detection of extensive air showers and the search for long distance correlations between different extensive air showers. In this paper an overall description of the experiment will be given, together with its educational fallout. The operation of the whole array is also discussed by showing the most recent results obtained from the analysis of the collected data.
Highlights
Scientific and educational aspects of the Energy Events (EEE) ProjectP. La Roccaab, M. Abbresciaac, C. Avanziniad, L. Baldiniad, R. Baldini Ferroliae, G. Batignaniad, M. Battaglieriaf , S. Boiag, E. Bossiniah, F. Carnesecchiai, C. Cicaloag, L. Cifarelliai, F. Coccettia, E. Cocciaaj, A. Corvagliaak, D. De Gruttolaal, S. De Pasqualeal, F. Fabbriae, L. Galanteam, P. Galeottiam, M. Garbiniai, G. Gemmeaf , I. Gnesiam, S. Grazzia, D. Hatzifotiadouaio, Z. Liuaop, G. Mandaglioaq, G. Maronr, M. N. Mazziottaas, A. Mulliriag, R. Naniaai, F. Noferiniai, F. Nozzoliat, F. Palmonariai, M. Panareoak, M. P. Panettaak, R. Paolettiah, C. Pellegrinoai, L. Perassoaf , C. Pintoab, G. Piraginoam, S. Pisanoae, F. Riggiab, G. Righinia, C. Ripolial, M. Rizziac, G. Sartorelliai, E. Scapparoneai, M. Schioppaau, A. Scribanoad, M. Selviai, G. Serriag, S Squarciaaf , M. Taiutiaf , G. Terreniad, A. Trifiroaq, M. Trimarchiaq, C. Vistolir, L. Votanoav, M. C. S. Williamsaio, A. Zichichiaio, R. Zuyeuskiao aMuseo Storico della Fisica e Centro Studi e Ricerche Enrico Fermi, Roma, Italy bINFN and Dipartimento di Fisica e Astronomia ”E.Majorana”, Universitadi Catania, Catania, Italy cINFN and Dipartimento Interateneo di Fisica, Universitadi Bari, Bari, Italy dINFN and Dipartimento di Fisica, Universita di Pisa, Pisa, Italy eINFN, Laboratori Nazionali di Frascati, Frascati (RM), Italy f INFN and Dipartimento di Fisica, Universita di Genova, Genova, Italy gINFN and Dipartimento di Fisica, Universitadi Cagliari, Cagliari, Italy hINFN and Dipartimento di Fisica, Universita di Siena, Siena, Italy iINFN and Dipartimento di Fisica, Universita di Bologna, Bologna, Italy jINFN and Dipartimento di Fisica, Universita di Roma Tor Vergata, Roma, Italy kINFN and Dipartimento di Matematica e Fisica, Universita del Salento, Lecce, Italy lINFN and Dipartimento di Fisica, Universita di Salerno, Salerno, Italy mINFN and Dipartimento di Fisica, Universitadi Torino, Torino, Italy oCERN, Geneva, Switzerland pICSC World laboratory, Geneva, Switzerland qINFN Sezione di Catania and Dipartimento di Scienze Matematiche e Informatiche, Scienze Fisiche e Scienze della Terra, Universitadi Messina, Messina, Italy rINFN-CNAF, Bologna, Italy sINFN Sezione di Bari, Bari, Italy tTrento Institute for Fundamental Physics and Applications, Trento, Italy uINFN and Dipartimento di Fisica, Universitadella Calabria, Cosenza, Italy vINFN, Laboratori Nazionali del Gran Sasso, Assergi (AQ), Italy
In the 100 years since the discovery of cosmic rays, a great deal has been learned about their composition, propagation and sources, mainly thanks to the development of different experimental techniques aimed at the detection of cosmic rays above and on the Earth’s surface, underground and even underwater
In 2004 it was a “pilot” Project with just 7 detectors, in 2019 it is an experiment with 62 detectors, most of them installed in Italian High Schools except for two at CERN and four in INFN units, across an overall area of ∼ 3×105 km2
Summary
P. La Roccaab, M. Abbresciaac, C. Avanziniad, L. Baldiniad, R. Baldini Ferroliae, G. Batignaniad, M. Battaglieriaf , S. Boiag, E. Bossiniah, F. Carnesecchiai, C. Cicaloag, L. Cifarelliai, F. Coccettia, E. Cocciaaj, A. Corvagliaak, D. De Gruttolaal, S. De Pasqualeal, F. Fabbriae, L. Galanteam, P. Galeottiam, M. Garbiniai, G. Gemmeaf , I. Gnesiam, S. Grazzia, D. Hatzifotiadouaio, Z. Liuaop, G. Mandaglioaq, G. Maronr, M. N. Mazziottaas, A. Mulliriag, R. Naniaai, F. Noferiniai, F. Nozzoliat, F. Palmonariai, M. Panareoak, M. P. Panettaak, R. Paolettiah, C. Pellegrinoai, L. Perassoaf , C. Pintoab, G. Piraginoam, S. Pisanoae, F. Riggiab, G. Righinia, C. Ripolial, M. Rizziac, G. Sartorelliai, E. Scapparoneai, M. Schioppaau, A. Scribanoad, M. Selviai, G. Serriag, S Squarciaaf , M. Taiutiaf , G. Terreniad, A. Trifiroaq, M. Trimarchiaq, C. Vistolir, L. Votanoav, M. C. S. Williamsaio, A. Zichichiaio, R. Zuyeuskiao aMuseo Storico della Fisica e Centro Studi e Ricerche Enrico Fermi, Roma, Italy bINFN and Dipartimento di Fisica e Astronomia ”E.Majorana”, Universitadi Catania, Catania, Italy cINFN and Dipartimento Interateneo di Fisica, Universitadi Bari, Bari, Italy dINFN and Dipartimento di Fisica, Universita di Pisa, Pisa, Italy eINFN, Laboratori Nazionali di Frascati, Frascati (RM), Italy f INFN and Dipartimento di Fisica, Universita di Genova, Genova, Italy gINFN and Dipartimento di Fisica, Universitadi Cagliari, Cagliari, Italy hINFN and Dipartimento di Fisica, Universita di Siena, Siena, Italy iINFN and Dipartimento di Fisica, Universita di Bologna, Bologna, Italy jINFN and Dipartimento di Fisica, Universita di Roma Tor Vergata, Roma, Italy kINFN and Dipartimento di Matematica e Fisica, Universita del Salento, Lecce, Italy lINFN and Dipartimento di Fisica, Universita di Salerno, Salerno, Italy mINFN and Dipartimento di Fisica, Universitadi Torino, Torino, Italy oCERN, Geneva, Switzerland pICSC World laboratory, Geneva, Switzerland qINFN Sezione di Catania and Dipartimento di Scienze Matematiche e Informatiche, Scienze Fisiche e Scienze della Terra, Universitadi Messina, Messina, Italy rINFN-CNAF, Bologna, Italy sINFN Sezione di Bari, Bari, Italy tTrento Institute for Fundamental Physics and Applications, Trento, Italy uINFN and Dipartimento di Fisica, Universitadella Calabria, Cosenza, Italy vINFN, Laboratori Nazionali del Gran Sasso, Assergi (AQ), Italy
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