The Focal Surface of the JEM-EUSO Instrument

Journal Article · Thu Sep 22 00:00:00 EDT 2011 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3628745· OSTI ID:21611622

Kawasaki, Y ^[1]; Casolino, M ^[2]; Gorodetzky, P ^[3]; Santangelo, A ^[4]; Ricci, M ^[5]; Kajino, F ^[6]; Ebisuzaki, T ^[1]

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1. Computational Astrophysics Lab., ASI, RIKEN (Japan)
2. INFN and Physics Department of Univresity of Rome 'Tor Vergata' (Italy)
3. APC-AstroParticule et Cosmologie (France)
4. Universitity of Tuebingen (Germany)
5. INFN, Laboratori Nazionali di Frascati (Italy)
6. Department of Physics, Konan University (Japan)

The Extreme Universe Space Observatory on JEM/EF (JEM-EUSO) is a space mission to study extremely high-energy cosmic rays. The JEM-EUSO instrument is a wide-angle refractive telescope in the near-ultraviolet wavelength region which will be mounted to the International Space Station. Its goal is to measure time-resolved fluorescence images of extensive air showers in the atmosphere. In this paper we describe in detail the main features and technological aspects of the focal surface of the instrument. The JEM-EUSO focal surface is a spherically curved surface, with an area of about 4.5m{sup 2}. The focal surface detector is made of more than 5,000 multi-anode photomultipliers (MAPMTs). Current baseline is Hamamatsu R11265-03-M64. The approach to the focal surface detector is highly modular. Photo-Detector-Modules (PDM) are the basic units that drive the mechanical structure and data acquisition. Each PDM consists of 9 Elementary Cells (ECs). The EC, which is the basic unit of the MAPMT support structure and of the front-end electronics, contains 4 units of MAPMTs. In total, about 1,200 ECs or about 150 PDMs are arranged on the whole of the focal surface of JEM-EUSO.

• OSTI ID: 21611622
• Journal Information: AIP Conference Proceedings, Vol. 1367, Issue 1; Conference: International symposium on the recent progress of ultra-high energy cosmic ray observation, Aichi (Japan), 10-12 Dec 2010; Other Information: DOI: 10.1063/1.3628745; (c) 2011 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
79 ASTROPHYSICS
COSMOLOGY AND ASTRONOMY
ANODES
ASTROPHYSICS
DATA ACQUISITION
EEV RANGE
EXTENSIVE AIR SHOWERS
FLUORESCENCE
INTERNATIONAL SPACE STATION
PHOTODETECTORS
PHOTOMULTIPLIERS
SOLID SCINTILLATION DETECTORS
SURFACES
TELESCOPE COUNTERS
TIME RESOLUTION
ULTRAVIOLET RADIATION
UNIVERSE
COSMIC RADIATION
COSMIC SHOWERS
ELECTRODES
ELECTROMAGNETIC RADIATION
EMISSION
ENERGY RANGE
IONIZING RADIATIONS
LUMINESCENCE
MEASURING INSTRUMENTS
PHOTON EMISSION
PHOTOTUBES
PHYSICS
RADIATION DETECTORS
RADIATIONS
RESOLUTION
SATELLITES
SCINTILLATION COUNTERS
SECONDARY COSMIC RADIATION
SHOWERS
SPACE VEHICLES
TIMING PROPERTIES
VEHICLES