HEP2026: 42nd Conference on Recent Developments in High Energy Physics and Cosmology [NTUA] Jul 8 – 11, 2026

GRANDProto300 - Status and Recent Progress

Jul 8, 2026, 5:50 PM

30m

Main Hall (Level 1) (National Technical University of Athens)

Detectors

Speaker

Dr Apostolos Tsirigotis (Aristotle University of Thessaloniki (GR), Hellenic Open University)

Description

The Giant Radio Array for Neutrino Detection (GRAND) aims to detect ultra-high-energy neutrinos, cosmic rays, gamma rays, and radio transients using large arrays of autonomous radio antennas. A major milestone toward this goal is GRANDProto300, currently under deployment in Gansu, China.
The present GP65 array, consisting of 65 autonomous radio detection units, is being used to validate detector performance, autonomous triggering, timing synchronization, calibration procedures, and event reconstruction techniques under realistic operating conditions. Continuous data taking has enabled detailed studies of the radio background environment and detector stability.
Recent analyses have led to the identification of the first candidate cosmic-ray events recorded by the array, marking an important step toward the standalone radio detection of extensive air showers with GRAND technology. In parallel, significant progress has been achieved in detector calibration, reconstruction algorithms, and data analysis tools.
This contribution presents the current status of GRANDProto300, highlights recent results from the GP65 array, and discusses the next steps toward the full 300-antenna deployment and future large-scale GRAND observatories.

Presentation materials

Presentation_hep2026_GRAND_corr2.pdf