Search for cosmic rays in GRANDProto300
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.
Authors
- Takashi Sako
- Kumiko Kotera (ORCID: https://orcid.org/0000-0002-6337-0696)
- Xishui Tian (ORCID: https://orcid.org/0000-0001-8462-0407)
- Mauricio Bustamante (ORCID: https://orcid.org/0000-0001-6923-0865)
- Hanrui Wang (ORCID: https://orcid.org/0009-0005-0498-2712)
- Jolan Lavoisier
Institutions
- Institut d'Astrophysique de Paris (FR)
- Laboratoire de Physique Nucléaire et de Hautes Énergies (FR)
- The University of Tokyo (JP)
Publication Details
- Published
- 2025-09-23
- DOI
- https://doi.org/10.22323/1.501.0314
- Citations
- 1
- Primary Topic
- Astrophysics and Cosmic Phenomena
- Type
- article
- Field-Weighted Citation Impact
- 1.87
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