Abstract
The Tunka-133 Cherenkov complex for recording extensive air showers (EAS) collected data over seven winters from 2009 to 2017. The differential energy spectra of all particles was acquired in the 6 × 1015–3 × 1018 eV range of energies over 2175 h. The TAIGA-HiSCORE complex is continually being expanded and upgraded. Data acquired by 30 first-line stations over 35 days during the period 2017–2018 is analyzed in this work. As at the Tunka-133 setup, the primary particle energies above 1015 eV are measured using the density of the Cherenkov light flux at a distance of 200 m from a shower’s axis. Data on lower energies are collected by determining the energy of the light flux near a shower’s axis. This results in a spectrum of 2 × 1014–1017 eV. The combined spectrum for the two systems covers a range of 2 × 1014–2 × 1018 eV.
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ACKNOWLEDGMENTS
Our experiments were performed on equipment at the Tunka Astrophysical Shared Resource Center under an agreement with the RF Ministry of Education and Science, unique identifier no. RFMEFI59317X0005.
Funding
This work was supported by the RF Ministry of Education and Science as part of State Task nos. 3.9678.2017/BCh, 3.904.2017/PCh, 3.6787.2017/ITR, and 1.6790.2017/ITR; and by the Russian Foundation for Basic Research, project no. 16-29-13035.
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Translated by O. Maslova
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Prosin, V.V., Astapov, I.I., Bezyazeekov, P.A. et al. Energy Spectrum of Primary Cosmic Rays, According to TUNKA-133 and TAIGA-HiSCORE EAS Cherenkov Light Data. Bull. Russ. Acad. Sci. Phys. 83, 1016–1019 (2019). https://doi.org/10.3103/S1062873819080343
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DOI: https://doi.org/10.3103/S1062873819080343