Performances of JEM-EUSO
1 Dipartimento di Fisica dell' Università di Torino and INFN Torino, Torino, Italy
2 Institute of Experimental Physics, Kosice, Slovakia
3 Institute for Astronomy and Astrophysics, Kepler Center, University of Tübingen, Germany
4 Saitama University, Saitama, Japan
5 Universidad Nacional Autónoma de México (UNAM), Mexico
6 Universidad de Alcalá (UAH), Madrid, Spain
7 RIKEN Advanced Science Institute, Wako, Japan
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In this paper we describe the requirements and the expected performances of JEM-EUSO. Designed as the first mission to explore the Ultra High Energy Universe from space, JEM-EUSO will monitor the earth's atmosphere at night to record the UV (300–400 nm) tracks generated by the Extensive Air Showers produced by Ultra High Energy primaries propagating in the atmosphere. After briefing summarizing the main aspects of the JEM-EUSO Instrument and mission baseline, we will present, in details, our studies of the expected trigger rate, the estimated exposure, as well as on the expected angular, energy, and Xmax resolution. Eventually, the obtained results will be discussed in the context of the scientific requirements of the mission.
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