The Giant Radio Array for Neutrino Detection (GRAND) Project

Abstract

GRAND is designed to detect ultra-high-energy cosmic particles – specially neutrinos, cosmic rays and gamma rays using radio antennas. With ~20 mountainous sites around the world it will cover a total area of 200,000 km^{2}2. The planned sensitivity of 10^{-10}−10 GeV cm^{-2}−2 s^{-1}−1 sr^{-1}−1 above 5\times10^{17}5×1017 eV will likely ensure the detection of cosmogenic neutrinos predicted by most common scenarios enabling neutrino astronomy. Furthermore, PeV–EeV neutrinos can test particle interactions at energies above those achieved in accelerators. The pathfinder stage GRANDProto300 is planned to start taking data in 2021. We present the current overall status of the project with emphasis on the neutrino physics.