The Giant Radio Array for Neutrino Detection
astro-ph.IM
/ Authors
Olivier Martineau-Huynh, Mauricio Bustamante, Washington Carvalho, Didier Charrier, Sijbrand De Jong, Krijn D. de Vries, Ke Fang, Zhaoyang Feng, Chad Finley, Quanbu Gou
and 12 more authors
Junhua Gu, Hongbo Hu, Kumiko Kotera, Sandra Le Coz, Clementina Medina, Kohta Murase, Valentin Niess, Foteini Oikonomou, Charles Timmermans, Zhen Wang, Xiangping Wu, Yi Zhang
/ Abstract
The Giant Radio Array for Neutrino Detection (GRAND) is a planned array of ~200 000 radio antennas deployed over ~200 000 km2 in a mountainous site. It aims primarly at detecting high-energy neutrinos via the observation of extensive air showers induced by the decay in the atmosphere of taus produced by the interaction of cosmic neutrinos under the Earth surface. GRAND aims at reaching a neutrino sensitivity of 5.10$^{11}$ E$^{-2}$ GeV$^{-1}$cm$^{-2}$s$^{-1}$sr$^{-1}$ above 3.10$^{16}$ eV. This ensures the detection of cosmogenic neutrinos in the most pessimistic source models, and ~50 events per year are expected for the standard models. The instrument will also detect UHECRs and possibly FRBs. Here we show how our preliminary design should enable us to reach our sensitivity goals, and discuss the steps to be taken to achieve GRAND.