RT Journal Article T1 miniTRASGO: design and initial results of a compact resistive plate chamber telescope for worldwide cosmic ray monitoring A1 Soneira-Landín, C. A1 Blanco, A. A1 Fraile Prieto, Luis Mario A1 Garzón, J.A. A1 Kornakov, G. A1 Lopes, L. A1 Michel, J. A1 Martínez Nouvilas, Víctor A1 Udías Moinelo, José Manuel AB Cosmic rays, composed primarily of high-energy protons and atomic nuclei, interact with Earth’s atmosphere, generating secondary particles that can be detected at ground level. Understanding these interactions requires precise measurements across various geomagnetic and atmospheric conditions. To address this challenge, miniTRASGO is introduced: a cost-effective and portable cosmic ray detector based on Resistive Plate Chambers, designed for worldwide deployment. This study describes the miniTRASGO system, including its design, data acquisition, and calibration processes. The detector measures charged secondary cosmic rays, reconstructs particle trajectories, and accounts for environmental influences such as pressure and temperature. Performance evaluations indicate an angular precision better than and an efficiency of approximately 95 %. The first operational miniTRASGO stations, deployed in Madrid (Spain), Warsaw (Poland), Puebla, and Monterrey (Mexico), allow for multi-site monitoring of cosmic ray flux. A Forbush Decrease event observed in March 2024 by the Madrid station validates the detector’s capability for space weather studies. The results highlight the potential of miniTRASGO to contribute to global cosmic ray monitoring, improving the characterization of cosmic ray variations and their implications for space weather. PB Elsevier SN 0273-1177 YR 2025 FD 2025-11-01 LK https://hdl.handle.net/20.500.14352/125929 UL https://hdl.handle.net/20.500.14352/125929 LA eng NO Soneira-Landín, C., et al. «miniTRASGO: Design and Initial Results of a Compact Resistive Plate Chamber Telescope for Worldwide Cosmic Ray Monitoring». Advances in Space Research, vol. 76, n.o 9, noviembre de 2025, pp. 5688-99. DOI.org (Crossref), https://doi.org/10.1016/j.asr.2025.07.096. NO Agencia Estatal de Investigación (España) NO Ministerio de Ciencia e Innovación (España) NO Comunidad de Madrid NO Xunta de Galicia DS Docta Complutense RD 1 ene 2026