Cosmic rays of a wide range of energies are arriving permanently to the Earth coming from the Sun or beyond our solar system. Their study is of interest for many fields of research. A high granularity and high time resolution cosmic ray tracking detector, TRAGALDABAS, based on timing RPC cells, has been recently installed at the Faculty of Physics of the Univ. of Santiago de Compostela, in Spain, in order to go deeper into the understanding of the cosmic rays arriving to the Earth surface. In this article, the layout and the main performances of the detector are shown together and some of the expected research fields are discussed. KEYWORDS: Particle tracking detectors (Gaseous detectors); Timing detectors; Large detector systems for particle and astroparticle physics 3 Front end electronics, data acquisition and performance 4 4 Main research goals and aims of the facility 5

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