Physics
Scientific paper
Jan 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011nimpa.626s..40g&link_type=abstract
Nuclear Instruments and Methods in Physics Research Section A, Volume 626, p. S40-S43.
Physics
Scientific paper
JEM-EUSO is a large telescope looking at the earth from the ISS. It uses a huge volume of the earth's night sky atmosphere in which an extremely energetic cosmic ray particle (E>1019eV) generates a straight-line N2 fluorescence signal on the path of the cascade shower moving at the speed of light for a length of 10-100 km depending on the incident angle. The space-time resolved calorimetry of showers is achieved with a large-aperture Fresnel lens optics and a large-area focal surface of detectors. Such a system in space is capable of detecting thousands of events with energy above 1020 eV (>1000 super-LHC) in a few years of operation on orbit, allowing a particle channel of astronomy and for research of fundamental physics in the universe. Neutrino interaction cross-sections at such high energies are expected to increase in the Standard Model, and EUSO expects a reasonable chance of observing the cosmogenic neutrino events among those detectable showers, because the atmospheric target mass of the EUSO TPC exceeds 1 trillion tons. This experiment JEM-EUSO is currently considered by the Japan Aerospace Exploration Agency (JAXA) for a possible payload on the Japan Experiment Module (JEM) of the International Space Station (ISS).
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