Abstract
The Tunka-Grande array is part of an experimental complex located in the Tunka Valley (Republic of Buryatia, Russia) about 50 km from Lake Baikal. This complex also contains the Tunka-133 and Tunka-Rex arrays. The aim of this complex is to study the primary cosmic ray energy spectrum and mass composition in the energy range of 1016–1018 eV, and to search for diffuse gamma rays in the energy range of 5 × 1016–5 × 1017 eV. The design of the Tunka-Grande array and the procedure for reconstructing the parameters of extensive air showers (EASes) are described, and preliminary results are presented from the search for diffuse gamma rays with energies of more than 5 × 1016 eV.
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ACKNOWLEDGMENTS
This work was performed on equipment at the Tunka Astrophysical Center for Collective Use (TACCU) as part of an agreement with the RF Ministry of Education and Science, unique identifier RFMEFI59317X0005. All calculations were performed on HPC-cluster “Akademik V.M. Matrosov” [18].
Funding
This work was supported by the RF Ministry of Education and Science, project nos. 3.9678.2017/BC, 3.904.2017/PC, 3.6787.2017/ITR, and 1.6790.2017/ITR; and by the Russian Foundation for Basic Research, project nos. 16-02-00738, 17 02-00905, 18-32-00460.
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Translated by E. Seifina
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Monkhoev, R.D., Budnev, N.M., Voronin, D.M. et al. The Search for Diffuse Gamma Rays Using Data from the Tunka-Grande Experiment. Bull. Russ. Acad. Sci. Phys. 83, 959–961 (2019). https://doi.org/10.3103/S1062873819080306
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DOI: https://doi.org/10.3103/S1062873819080306