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The askar'yan radio array, an UHE-neutrino detector at south pole

par Meures, Thomas
Référence Proceedings of the International School of Physics "Enrico Fermi", 182, page (321-325)
Publication Publié, 2012

Article révisé par les pairs

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Résumé :

The Askar'yan Radio Array (ARA), a neutrino detector to be situated at the South Pole, will be sensitive to ultrahigh-energy cosmic neutrinos above 0.1EeV and will have the greatest sensitivity within the favoured energy range 0.1EeV up to 10EeV. Neutrinos of this energy are guaranteed by the current observations of the GZK-cutoff by the HiRes and the Pierre Auger Observatories. The detection method is based on Cherenkov emission by a neutrino-induced cascade in the ice, coherent at radio wavelengths, which was predicted by Askar'yan in 1962 and verified in beam tests at SLAC in 2001. The detector is planned to consist of 37 stations with 16 antennas each, deployed at depth of up to 200m under the ice surface. During the last polar season (2010-2011), a prototype station was successfully deployed and is taking data relevant to future analyses: Ambient noise background studies and data for characterization of the South Pole ice sheet. The IIHE, as part of a worldwide collaboration of institutions in the USA, Asia, Oceania, and Europe, is contributing to the construction of the detector array, focusing on data acquisition methods. This talk will give a short report on the status of the ARA detector. © Società Italiana di Fisica.