Low-Energy Background Events in the Horizon-T Experiment at the Tien Shan High-Altitude Scientific Station of the Lebedev Physical Institute
Vildanova M.I. Anokhina A.M. Aseikin V.S. Baigarin K.A. Beisembaeva E.A. Zhukov V.V. Ryabov V.A. Samoilov M.A. Sadykov T. Shaulov S.B.
May 2025Pleiades Publishing
Bulletin of the Lebedev Physics Institute
2025#52Issue 5191 - 199 pp.
Abstract: The Horizon-T installation at the Tien Shan High-Altittude Scientific Station of the Lebedev 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 be digitized with a resolution of 2 ns and the fine time structure of EAS’s, in particular, the so-called multimodal 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 events simulated using the CORSIKA-77500 code, are considered. A conclusion is made about the optimality of the simulation parameters and the contribution of random low-energy showers to the time sweeps recorded from high-energy EAS’s.
cosmic rays , extensive air showers , scintillation detectors
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Lebedev Physical Institute, Russian Academy of Sciences, Moscow, 119991, Russian Federation
Faculty of Physics, Lomonosov Moscow State University, Moscow, 119991, Russian Federation
Skobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University, Moscow, 119991, Russian Federation
Moscow, Russian Federation
Nazarbayev University, Astana, 010000, Kazakhstan
Institute of Physics and Technology, Satbayev University, Almaty, 050032, Kazakhstan
Lebedev Physical Institute
Faculty of Physics
Skobeltsyn Institute of Nuclear Physics
Moscow
Nazarbayev University
Institute of Physics and Technology
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