Development of a radio-detection method array for the observation of ultra-high energy neutrino induced showers

摘要

The recent demonstration by the CODALEMA Collaboration of the ability of theradio-detection technique for the characterization of UHE cosmic-rays calls forthe use of this powerful method for the observation of UHE neutrinos. For thispurpose, an adaptation of the existing 21CM Array (China) is presently underachievment. In an exceptionally low electromagnetic noise level, 10160log-periodic 50-200 MHz antennas sit along two high valleys, surrounded bymountain chains. This lay-out results in 30-60 km effective rock thicnesses forneutrino interactions with low incidence trajectories along the direction oftwo 4-6 km baselines. We will present first in-situ radio measurementsdemonstrating that this environment shows particularly favourable conditionsfor the observation of electromagnetic decay signals of taus originating fromthe interaction of 10^17-20 eV tau neutrinos.