Optimisation et caractérisation des performances d'un telescope sous-marin à neutrinos pour le projet ANTARES

Abstract : High energy (> 100 GeV) cosmic neutrinos allow us to open a new window on the Universe and bring some clues on certain unsolved Particle Physics and Astrophysics questions. Their observation requires the design of a new kind of detector. We have optimised and characterised the performances that can be expected from a first generation deep underwater neutrino telescope equipped with 1000 photomultiplier tubes. The systematic effects of the main hypotheses made in the simulations are discussed. The detector effective area reaches 10000 m2 at 100 GeV and is above 0.1 km2 beyond 100 TeV. The angular resolution is between 0.2° and 0.3° depending on the time calibration errors and the energy resolution is between a factor 2 and 3. The rate of background induced by atmospheric muons is at most of the same order of magnitude as that due to atmospheric neutrinos. Its estimation is still limited by the statistics. These results emphasize that a deep underwater neutrino telecope has great discovery potentials and should lead to a new astronomy era.
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Fabrice Hubaut. Optimisation et caractérisation des performances d'un telescope sous-marin à neutrinos pour le projet ANTARES. Astrophysique [astro-ph]. Université de la Méditerranée - Aix-Marseille II, 1999. Français. ⟨tel-00001404⟩

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