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

TL;DR

This paper discusses developing a radio-detection array in a low-noise environment to observe ultra-high energy neutrino-induced showers, leveraging existing infrastructure and promising initial measurements.

Contribution

It introduces an adapted radio-detection array with a novel layout in a low-noise area for UHE neutrino observation, demonstrating promising initial in-situ measurements.

Findings

Favorable conditions for detecting tau neutrino signals in the environment.

Successful deployment of a low-noise, high-altitude antenna array.

Initial radio measurements indicate potential for UHE neutrino detection.

Abstract

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