Progress of the GRANDProto300 Project

GRANDProto300 (hereafter referred to as GP300) is a pioneering prototype array of the GRAND experiment. It consists of 300 radio antennas and will cover an area of \(200\, \text{km}^2\) in a radio-quiet region of western China. Serving as a test bench for the GRAND experiment, GRANDProto300 aims to achieve autonomous radio detection and reconstruction of highly inclined air showers. It is designed to detect ultra-high-energy cosmic rays in the energy range of \(10^{16.5} - 10^{18}\, \text{eV}\) at a rate comparable to that of the Pierre Auger Observatory. Over the past two years, significant improvements have been made to both the hardware and firmware of GP300. Currently, 65 antenna units have been deployed at the site by June 2025. We present the current status of detector commissioning, including updates on hardware, calibration results such as GPS timing and antenna positioning. Additionally, we discuss the solar radio bursts associated with solar flares, the galactic radio emissions detected, and preliminary cosmic ray surveys.

Authors

Publication Details

Published
2025-09-24
DOI
https://doi.org/10.22323/1.501.0453
Citations
1
Primary Topic
Methane Hydrates and Related Phenomena
Type
article
Field-Weighted Citation Impact
0.86

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article

Progress of the GRANDProto300 Project

Xin Ping Xu, S. Wang, Kewen Zhang, Peng-Xiong Ma et al.
1 citations
Methane Hydrates and Related Phenomena
0.86
article

Progress of the GRANDProto300 Project

Xin Ping Xu, S. Wang, Kewen Zhang, Peng-Xiong Ma, Pengfei Zhang, Bohao Duan, Xing Xu, Yi Zhang
article en
1 citations

Abstract

GRANDProto300 (hereafter referred to as GP300) is a pioneering prototype array of the GRAND experiment. It consists of 300 radio antennas and will cover an area of \(200\, \text{km}^2\) in a radio-quiet region of western China. Serving as a test bench for the GRAND experiment, GRANDProto300 aims to achieve autonomous radio detection and reconstruction of highly inclined air showers. It is designed to detect ultra-high-energy cosmic rays in the energy range of \(10^{16.5} - 10^{18}\, \text{eV}\) at a rate comparable to that of the Pierre Auger Observatory. Over the past two years, significant improvements have been made to both the hardware and firmware of GP300. Currently, 65 antenna units have been deployed at the site by June 2025. We present the current status of detector commissioning, including updates on hardware, calibration results such as GPS timing and antenna positioning. Additionally, we discuss the solar radio bursts associated with solar flares, the galactic radio emissions detected, and preliminary cosmic ray surveys.

National Science Foundation, Villum Fonden, Deutsche Forschungsgemeinschaft, Agence Nationale de la Recherche, Coordenação de Aperfeiçoamento de Pessoal de Nível Superior, Chinese Academy of Sciences, Centre National d’Etudes Spatiales, Conselho Nacional de Desenvolvimento Científico e Tecnológico, China Scholarship Council, Fundação Carlos Chagas Filho de Amparo à Pesquisa do Estado do Rio de Janeiro, Centre National de la Recherche Scientifique, Narodowa Agencja Wymiany Akademickiej, Sorbonne Université, Institut National de Physique Nucléaire et de Physique des Particules, National Astronomical Observatories, Chinese Academy of Sciences
Openalex Percentile: Top 23%
Methane Hydrates and Related Phenomena
0.86
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