Solar-Terrestrial Physics Solar-Terrestrial Physics Solar-Terrestrial Physics 2500-0535 96553 10.12737/stp-111202511 Results of current research Results of current research Results of current research Temperature effect of muons detected underground by scintillation detectors Temperature effect of muons detected underground by scintillation detectors Янчуковский Валерий Леонидович Yanchukovsky Valery Leonidovich vjanch@gs.nsc.ru

доктор физико-математических наук;

doctor of physical and mathematical sciences;

 Хисамов Рашит Замалтдинович Khisamov Rashit Zamaltdinovich khisamovrz@ipgg.sbras.ru Институт нефтегазовой геологии и геофизики им. А.А. Трофимука СО РАН Новосибирск Россия Trofimuk Institute of Petroleum Geology and Geophysics SB RAS Novosibirsk Russian Federation Институт нефтегазовой геологии и геофизики им. А.А. Трофимука СО РАН Новосибирск Россия Trofimuk Institute of Petroleum Geology and Geophysics SB RAS Novosibirsk Russian Federation 26 03 2025 26 03 2025 11 1 90 100 23 10 2024 02 12 2024 https://naukaru.ru/en/nauka/article/96553/view

The A.I. Kuzmin Cosmic Ray Spectrograph in Yakutsk contains a 24-NM-64 neutron monitor and a system of underground MT and SMT muon detectors for recording muons at levels of 0, 7, 20, and 40 m of water equivalent. The temperature effect of muons observed with MT telescopes on gas-discharge counters has been analyzed in the previous work [Yanchukovsky, 2023]. Here we calculate the temperature effect of muons recorded by SMT telescopes. Distributions of the density of temperature coefficients for muons recorded on the surface and at different depths underground were found from SMT telescope data for the period from January 2016 to December 2018, using data on the altitude profile of the atmosphere temperature over Yakutsk for the same period. In the analysis of multidimensional data, we applied the methods of regression on principal components. When constructing a system of linear equations in the space of principal components, we employed the method of projections to latent structures (PLS2). The obtained results were compared with the results of theoretical calculations. The found distributions of the density of temperature coefficients allow us to correctly take into account the temperature effect in data from SMT muon telescopes.

The A.I. Kuzmin Cosmic Ray Spectrograph in Yakutsk contains a 24-NM-64 neutron monitor and a system of underground MT and SMT muon detectors for recording muons at levels of 0, 7, 20, and 40 m of water equivalent. The temperature effect of muons observed with MT telescopes on gas-discharge counters has been analyzed in the previous work [Yanchukovsky, 2023]. Here we calculate the temperature effect of muons recorded by SMT telescopes. Distributions of the density of temperature coefficients for muons recorded on the surface and at different depths underground were found from SMT telescope data for the period from January 2016 to December 2018, using data on the altitude profile of the atmosphere temperature over Yakutsk for the same period. In the analysis of multidimensional data, we applied the methods of regression on principal components. When constructing a system of linear equations in the space of principal components, we employed the method of projections to latent structures (PLS2). The obtained results were compared with the results of theoretical calculations. The found distributions of the density of temperature coefficients allow us to correctly take into account the temperature effect in data from SMT muon telescopes.

 cosmic rays atmosphere muons telescope temperature effect cosmic rays atmosphere muons telescope temperature effect The work was financially supported by the Ministry of Science and Higher Education of the Russian Federation (Project FWZZ-2022-0019) The work was financially supported by the Ministry of Science and Higher Education of the Russian Federation (Project FWZZ-2022-0019)

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