Year: 2025
Type: conference-paper
Abstract: GRANDProto300 (GP300) is a prototype array of the GRAND experiment, designed to validate the technique of autonomous radio-detection of astroparticles by detecting cosmic rays with energies between $10^{17}$-$10^{18.5}$ eV. This observation will further enable the study of the Galactic- to-extragalactic source transition region. Since November 2024, 46 out of 300 antennas have been operational and collecting data stably. We present our cosmic-ray search pipeline, which involves several filtering steps: (1) coincidence search for signals triggering multiple antennas within a time window, (2) directional reconstruction of events, (3) exclusion of clustered (in time and space) noise events, (4) polarization cut, (5) selection based on the size of the footprint, and (6) other more arbitrary cuts in this preliminary stage, including visual cuts. The efficiency of the pipeline is evaluated and applied to the first batch of data, yielding a set of cosmic-ray candidate events, which we present.
DOI: 10.22323/1.501.0314
Authors: Jolan Lavoisier, Xishui Tian, Kumiko Kotera, Takashi Sako, Hanrui Wang, Mauricio Bustamante
Institutions: Centre National de la Recherche Scientifique, Institut d'Astrophysique de Paris, Sorbonne Université, International Laboratory for Astrophysics, Neutrino and Cosmology Experiments, The University of Tokyo, Laboratoire de Physique Nucléaire et de Hautes Énergies, Vrije Universiteit Brussel, Interuniversity Institute for High Energies, Xidian University
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: hybrid
Funders: 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
Awards: G1228348679, Astroparticles and pulsars: connections from low to ultrahigh energies, G196419191, G2293383998, New trigger: novel techniques for pure, efficient and scalable autonomous radio detection of high energy neutrinos and cosmic rays, NUTRIG: neuartige Methoden für reine, effiziente und skalierbare autonome Radiodetektion hochenergetischer Neutrinos und kosmischer Strahlung, G430030528, G4409852737, G6141822678, G6649312515, G7321284446, G8543737702, LEAPS-MPS: Unveiling the Ultra-High-Energy Universe with the Giant Radio Array for Neutrino Detection (GRAND), G8747812308, G92209578
OpenAlex ID: W4414448891