Персона: Богданов, Алексей Георгиевич
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Институт ядерной физики и технологий
Цель ИЯФиТ и стратегия развития - создание и развитие научно-образовательного центра мирового уровня в области ядерной физики и технологий, радиационного материаловедения, физики элементарных частиц, астрофизики и космофизики.
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- ПубликацияОткрытый доступThe NEVOD-EAS air-shower array(2022) Шульженко, Иван Андреевич; Яшин, Игорь Иванович; Хохлов, Семен Сергеевич; Кокоулин, Ростислав Павлович; Громушкин, Дмитрий Михайлович; Богданов, Алексей Георгиевич; Петрухин, Анатолий Афанасьевич; Барбашина, Наталья Сергеевна; Pasyuk, N. A.; Kokoulin, R. P.; Kindin, V. V.; Khokhlov, S. S.; Gromushkin, D. M.; Bogdanov, A. G.; Barbashina, N. S.; Shutenko, V. V.; Shulzhenko, I. A.; Petrukhin, A. A.; Yashin, I. I.; Amelchakov, M. B.; Kompaniets, K. G.; Konovalova, A. Y.; Ovchinnikov, V. V.; Yurin, K. O.; Пасюк, Никита Александрович; Шутенко, Виктор Викторович; Овчинников, Вячеслав Васильевич; Коновалова, Алена Юрьевна; Компаниец, Константин Георгиевич; Киндин, Виктор Владимирович; Амельчаков, Михаил БорисовичThe Experimental complex NEVOD includes several different setups for studying various components of extensive air showers (EAS) in the energy range from 1010 to 1018eV. The NEVOD-EAS array for detection of the EAS electron–photon component began its data taking in 2018. It is a distributed system of scintillation detectors installed over an area of about 104 m2. A distinctive feature of this array is its cluster organization with different-altitude layout of the detecting elements. The main goal of the NEVOD-EAS array is to obtain an estimation of the primary particle energy for events measured by various detectors of the Experimental complex NEVOD. This paper describes the design, operation principles and data processing of the NEVOD-EAS array. The criteria for the event selection and the accuracy of the EAS parameters reconstruction obtained on the simulated events are discussed. The results of the preliminary analysis of experimental data obtained during a half-year operation are presented.
- ПубликацияОткрытый доступMulticomponent Studies of Extensive Air Showers at Facilities of the NEVOD Experimental Complex(2023) Amelchakov, M. B. ; Konovalova, A. Yu. ; Nugaeva, K. R.; Pochestnev, A. D. ; Yuzhakova, E. A. ; Хохлов, Семен Сергеевич; Петрухин, Анатолий Афанасьевич; Шульженко, Иван Андреевич; Кокоулин, Ростислав Павлович; Богданов, Алексей Георгиевич; Громушкин, Дмитрий Михайлович; Дмитриева, Анна Николаевна; Bogdanov, A. G.; Gromushkin, D. M.; Dmitrieva, A. N.; Kokoulin, R. P.; Konovalova, A. Y.; Nugaeva, K. R.; Petrukhin, A. A.; Pochestnev, A. D.; Khokhlov,S. S.; Shulzhenko, I. A.; Yuzhakova, E. A.; Amelchakov, M. B.; Нугаева, Корнелия Рустемовна; Коновалова, Алена Юрьевна; Почестнев, Андрей Дмитриевич; Амельчаков, Михаил Борисович; Южакова, Елена АлександровнаParameters of extensive air showers detected by the facilities of the NEVOD Experimental Complex are analyzed and compared with events simulated. The calibration and energy threshold of the NEVOD-EAS detector are discussed, as well as the results of retrieval of the axis directions from the NEVOD-EAS and DECOR data. An example of the event detected by all facilities of the complex is given.
- ПубликацияОткрытый доступIntensity of muon bundles according to the NEVOD-DECOR cosmic ray experiment(2020) Chernov, D. V ; Kindin, V. V.; Kompaniets, K. G.; Mannocchi, G.; Trinchero, G.; Shutenko, V. V. ; Yurina, E. A.; Петрухин, Анатолий Афанасьевич; Задеба, Егор Александрович; Яшин, Игорь Иванович; Хохлов, Семен Сергеевич; Кокоулин, Ростислав Павлович; Богданов, Алексей Георгиевич; Барбашина, Наталья Сергеевна; Bogdanov, A. G.; Barbashina, N. S.; Kokoulin, R. P.; Petrukhin, A. A.; Yashin, I. I.; Zadeba, E. A.; Khokhlov, S. S.; Шутенко, Виктор Викторович; Компаниец, Константин Георгиевич; Киндин, Виктор ВладимировичData of NEVOD-DECOR experiment on investigations of inclined cosmic ray muon bundles for a long time period (May 2012 – May 2020) are presented. Their comparison with the results of calculations based on simulations of extensive air shower hadron and muon components is carried out. The analysis showed that the observed intensity of muon bundles at primary particle energies of about 1018 eV and higher can be compatible with the expectation only under the assumption of an extremely heavy mass composition of cosmic rays. On the contrary, measurements of the depth of the shower maximum in the atmosphere in the experiments using air fluorescence technique, favour a light mass composition of primary cosmic rays at these energies.
- ПубликацияОткрытый доступMuon excess in ultra-high energy inclined EAS according to the NEVOD-DECOR data(37th International Cosmic Ray Conference (ICRC 2021) July 12th – 23rd, 2021, 2021) Kindin, V. V. ; Kompaniets, K. G.; Mannocchi, G. ; Shutenko, V. V. ; Trinchero, G. ; Yurina, E. A. ; Яшин, Игорь Иванович; Задеба, Егор Александрович; Петрухин, Анатолий Афанасьевич; Хохлов, Семен Сергеевич; Кокоулин, Ростислав Павлович; Богданов, Алексей Георгиевич; Барбашина, Наталья Сергеевна; Barbashina, N. S.; Bogdanov, A. G.; Khokhlov, S. S.; Petrukhin, A. A.; Yashin, I. I.; Zadeba, E. A.; Kokoulin, R. P.; Киндин, Виктор Владимирович; Компаниец, Константин Георгиевич; Шутенко, Виктор ВикторовичData of the NEVOD-DECOR experiment on investigations of inclined cosmic ray muon bundles for a long time period (May 2012 – March 2021) are presented. Their comparison with the results of calculations based on simulations of EAS muon component allows one to study the behavior of the energy spectrum and mass composition of primary cosmic rays and/or to check the validity of hadron interaction models in a wide energy range from about 1016 to more than 1018 eV. The analysis showed that the observed intensity of muon bundles at primary particle energies of about 1018 eV and higher can be compatible with the expectation only under the assumption of an extremely heavy mass composition of cosmic rays. This conclusion is consistent with data of a number of other experiments investigating the muon component of air showers at ultra-high energies. On the contrary, measurements of the depth of the shower maximum in the atmosphere (Xmax) in the experiments using air fluorescence technique favor a light mass composition of primary cosmic rays at these energies. This contradiction (so-called “muon puzzle”) cannot be resolved without serious changes of the existing hadron interaction models.
- ПубликацияОткрытый доступAverage Muon Energies in Inclined Bundles, According to NEVOD-DECOR Data(2023) Yurina, E. A.; Vorobev, V. S. ; Kindin, V. V. ; Kompaniets, K. G.; Konovalova, A. Yu. ; Mannocchi, G. ; Trinchero, G. ; Shutenko, V. V.; Богданов, Алексей Георгиевич; Кокоулин, Ростислав Павлович; Яшин, Игорь Иванович; Хохлов, Семен Сергеевич; Петрухин, Анатолий Афанасьевич; Барбашина, Наталья Сергеевна; Khokhlov, S. S.; Yashin, I. I.; Kokoulin, R. P.; Bogdanov, A. G.; Barbashina, N. S.; Petrukhin, A. A.; Киндин, Виктор Владимирович; Шутенко, Виктор Викторович; Коновалова, Алена Юрьевна; Компаниец, Константин ГеоргиевичResults are presented from measuring the energy characteristics of muon bundles in inclined extensive air showers in the NEVOD-DECOR experiment. Estimates of the average energy of muons in the bundles are obtained in the 10 to 1000 PeV range of primary particle energies and compared to values calculated under different assumptions about the composition of cosmic radiation and models of hadronic interactions. An excess of experimental values of the average muon energy relative to calculations is found for high local densities corresponding to primary particle energies above 100 PeV.
- ПубликацияОткрытый доступStatus of the NEVOD–DECOR Experiment on the Study of Muon Bundles Energy Deposit(2021) Yurina, E. A. ; Kindin, V. V. ; Kompaniets, K. G. ; Mannocchi, G.; Trinchero, G.; Shutenko, V. V. ; Хохлов, Семен Сергеевич; Яшин, Игорь Иванович; Петрухин, Анатолий Афанасьевич; Кокоулин, Ростислав Павлович; Богданов, Алексей Георгиевич; Барбашина, Наталья Сергеевна; Yashin, I. I.; Khokhlov, S. S.; Petrukhin, A. A.; Kokoulin, R. P.; Bogdanov, A. G.; Barbashina, N. S.; Киндин, Виктор Владимирович; Компаниец, Константин Георгиевич; Шутенко, Виктор ВикторовичAllerton Press, Inc.Abstract: The existence of an excessive number of multimuon events observed in many experiments at ultrahigh EAS energies (above 1017 eV) relative to calculations cannot be explained using modern models of hadronic interactions. One way of solving the problem of muon excess is to study the energy characteristics of the EAS muon component. Results are presented from measurements of muon bundle energy characteristics over 7 years of observations. The experimental dependences are compared to results from simulation done with the CORSIKA software package.
- ПубликацияОткрытый доступMeasurements of the average muon energy in inclined muon bundles in the NEVOD-DECOR experiment(2021) Yurina, E. A. ; Kindin, V. V. ; Kompaniets, K. G. ; Mannocchi, G.; Shutenko, V. V. ; Trinchero, G. ; Петрухин, Анатолий Афанасьевич; Яшин, Игорь Иванович; Кокоулин, Ростислав Павлович; Хохлов, Семен Сергеевич; Богданов, Алексей Георгиевич; Барбашина, Наталья Сергеевна; Barbashina, N. S.; Bogdanov, A. G.; Khokhlov, S. S.; Kokoulin, R. P.; Petrukhin, A. A.; Yashin, I. I.; Шутенко, Виктор Викторович; Компаниец, Константин Георгиевич; Киндин, Виктор Владимирович
- ПубликацияОткрытый доступVariations in the intensity of cosmic ray muon bundles according to DECOR data 2012-2017(2019) Yurina, E. A.; Bogdanov, A. G.; Dmitrieva, A. N.; Kokoulin, R. P.; Shutenko, V. V.; Юрина, Екатерина Александровна; Богданов, Алексей Георгиевич; Дмитриева, Анна Николаевна; Кокоулин, Ростислав Павлович; Шутенко, Виктор Викторович© 2019 Published under licence by IOP Publishing Ltd. Investigation of variations in the intensity of cosmic ray muon bundles detected at the ground level with the coordinate-tracking detector DECOR over a long period of observations is considered. It has been found that the measured intensity of the events exhibits clear seasonal variations, repeated every year of observations. These variations are caused by changes in atmospheric conditions. Correlations of the intensity of muon bundles with atmospheric pressure, mean air temperature and the altitude of the fixed residual atmospheric pressure levels have been analyzed.
- ПубликацияТолько метаданныеComparison of Models of Nucleus–Nucleus Interactions Implemented in CORSIKA(2021) Nikolaenko, R. V.; Bogdanov, A. G.; Kokoulin, R. P.; Petrukhin, A. A.; Николаенко, Роман Владимирович; Богданов, Алексей Георгиевич; Кокоулин, Ростислав Павлович; Петрухин, Анатолий Афанасьевич© 2021, Pleiades Publishing, Ltd.Abstract: Four most widely used models of hadronic interactions at high energies implemented in CORSIKA program were compared basing on the simulation of the first nucleus–nucleus interactions of cosmic rays with the atmosphere. For this comparison the distributions of the number of produced particles of different types were obtained, as long as the mean values of these numbers. The dependences of the fraction of the collision energy carried by different secondary particles on the mass of the primary particle were calculated for each model. The check of the electric charge conservation law implementation was performed. Comparison shows vast differences between the models in some cases that may result in different interpretation of experimental data.
- ПубликацияОткрытый доступInvestigation of the EAS neutron component with the URAN array: First simulation and experimental results(2020) Izhbulyakova, Z. T.; Bogdanov, A. G.; Bogdanov, F. A.; Gromushkin, D. M.; Pochestnev, A. D.; Shulzhenko, I. A.; Yurin, K. O.; Богданов, Алексей Георгиевич; Громушкин, Дмитрий Михайлович; Почестнев, Андрей Дмитриевич; Шульженко, Иван Андреевич© Published under licence by IOP Publishing Ltd.The URAN array was created in the Scientific and Educational Centre NEVOD (MEPhI). The URAN facility was designed to register neutrons that accompany EAS at the energies of the primary cosmic rays around and above the "knee". It includes 72 detectors based on a thin inorganic scintillator for registration of the charged and neutron components of the EAS. The total area of the facility is about 103 m2. For the correct interpretation of the experimental data of the URAN, the response of the URAN facility to the passage of EAS was simulated using the CORSIKA7.6900 program and Geant4.10.5 software package. It gave a possibility to study neutron generation in the experimental complex building. Experimental data were processed and analyzed. Results of simulation and experimental data are presented.