Low-Energy Background Events in the Horizon-T Experiment at the Tien Shan High-Altitude Scientific Station of the Lebedev Physical Instituteстатья
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Аннотация:Abstract—The Horizon-T installation at the Tien Shan High-Altittude Scientific Station of the Lebe-dev Physical Institute is designed to detect extensive air showers (EAS’s) of ultrahigh energies.The capabilities of the installation allow the signal measaured at the scintillation detector points to bedigitized with a resolution of 2 ns and the fine time structure of EAS’s, in particular, the so-called mul-timodal events, to be studied. This paper examines a possible contribution of low-energy (1012 eV ≤ E ≤1016 eV) showers to the detected signal. Background events measured in the Horizon-T experiment,which can be accidentally included in the recorded EAS event, as well as low-energy artificial eventssimulated using the CORSIKA-77500 code, are considered. A conclusion is made about the optimal-ity of the simulation parameters and the contribution of random low-energy showers to the timesweeps recorded from high-energy EAS’s.