Extensive Air Shower Detector Array at the Universidad Autonoma de Puebla

We describe the operation of an Extensive Air Shower Array located at the campus of the FCFM‐BUAP. The array consists of 8 liquid scintillation detectors with a surface of 1 m² each and a detector spacing of 20 m in a square grid. The array was designed to measure the energy and arrival direction of primary particles that generate extensive air showers (EAS) in the region of 10¹³ eV – 10¹⁶ eV. The angular distribution measured with this array, Cos⁸(Θ)×Sin(Θ), agrees very well with the literature. We also present the measured energies of a number of vertical showers in the range of 5×10¹² eV to 5×10¹³ eV.