The GRANDProto300 ( GP300 ) experiment is the first stage of the Giant Radio Array for Neutrino Detection ( GRAND ) project .
It will be deployed between 2020 and 2021 in a radio-quiet area , at 3000 m of altitude at the rim of the Tibetan plateau , over a total surface of 200 km ^ { 2 } .
The primary goal of GP300 is to demonstrate the viability of the GRAND detection concepts .
It will provide a unique test bench to develop and validate new identification and reconstruction techniques for the radio detection of very inclined air-showers , in the perspective of the next stages of GRAND .
GP300 also proposes a rich science case , which includes accurate measurements of cosmic-ray and gamma-ray air-showers in the energy range of 30 PeV to 1 EeV , and a wide-field survey of the Epoch of Reionization , and of radio transients such as Giant Radio Pulses and Fast Radio Bursts .