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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Богданов
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Алексей Георгиевич
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- ПубликацияТолько метаданныеLocal Muon Density Spectra at Various Zenith Angles Measured with NEVOD-DECOR(2019) Kokoulin, R. P.; Bogdanov, A. G.; Mannocchi, G.; Petrukhin, A. A.; Shutenko, V. V.; Yashin, I. I.; Yurina, E. A.; Кокоулин, Ростислав Павлович; Богданов, Алексей Георгиевич; Петрухин, Анатолий Афанасьевич; Шутенко, Виктор Викторович; Яшин, Игорь Иванович; Юрина, Екатерина АлександровнаData on cosmic ray muon bundles accumulated at the NEVOD-DECOR complex over the period from May 2012 to December 2018 have been analyzed. Local muon density spectra at various zenith angles have been reconstructed and compared with CORSIKA-based simulations. At large zenith angles and high muon multiplicities corresponding to primary particle energies more than about 3 x 10(17) eV an excess of multi-muon events compared to simulations is clearly seen. Present data are compatible with the expectation for recent LHC-adjusted hadron interaction models only under assumption of extremely heavy (iron group nuclei) primary composition. The assumption of a heavy composition is however in contradiction with other EAS observables, such as maximum depth and its fluctuations.
- ПубликацияТолько метаданныеSimple Geometrical Model of Nucleus—Nucleus Interactions at Very High Energies(2019) Sozinov, E. S.; Bogdanov, A. G.; Petrukhin, A. А.; Shutenko, V. V.; Богданов, Алексей Георгиевич; Петрухин, Анатолий Афанасьевич; Шутенко, Виктор Викторович© 2019, Pleiades Publishing, Ltd.In this paper we continue developing an earlier proposed model of quark-gluon blob (QGB) production with large orbital momentum, which allows to demonstrate and study different properties of nucleus-nucleus interactions. In particular, the number of nucleons and transferred energy in QGB are considered and comparison with predictions of other models is analyzed.
- ПубликацияТолько метаданныеInvestigation of the Energy Loss of Muon Bundles in the Cherenkov Water Calorimeter(2019) Mannocchi, G.; Trinchero, G.; Yurina, E. A.; Barbashina, N. S.; Bogdanov, A. G.; Khokhlov, S. S.; Kindin, V. V.; Kokoulin, R. P.; Kompaniets, K. G.; Petrukhin, A. A.; Shutenko, V. V.; Yashin, I. I.; Юрина, Екатерина Александровна; Барбашина, Наталья Сергеевна; Богданов, Алексей Георгиевич; Хохлов, Семен Сергеевич; Киндин, Виктор Владимирович; Кокоулин, Ростислав Павлович; Компаниец, Константин Георгиевич; Петрухин, Анатолий Афанасьевич; Шутенко, Виктор Викторович; Яшин, Игорь Иванович© 2019, Pleiades Publishing, Ltd.Investigations of the energy loss of muon bundles are being conducted at the Experimental complex NEVOD. Such investigations are directed to detailed study of “muon puzzle” (the excess of multi-muon events observed in several cosmic ray experiments at ultra-high energies). Results of measurements of the muon bundle energy deposit during a long period of observations in primary cosmic ray energy range 10–1000 PeV have been obtained and have been compared with simulations performed on the basis of the CORSIKA code.
- ПубликацияТолько метаданныеReconstruction of Characteristics of Extensive Air Showers Detected with the NEVOD-EAS Array(2019) Likiy, O. I.; Amelchakov, M. B.; Bogdanov, A. G.; Chiavassa, A.; Khokhlov, S. S.; Kokoulin, R. P.; Shulzhenko, I. A.; Амельчаков, Михаил Борисович; Богданов, Алексей Георгиевич; Хохлов, Семен Сергеевич; Кокоулин, Ростислав Павлович; Шульженко, Иван Андреевич© 2019, Pleiades Publishing, Ltd.In 2018, the creation of the central part of the NEVOD-EAS cluster-type array aimed at detection of the electron-photon component of extensive air showers in the energy range from 1015 to 1017 eV was completed. At present, a continuous data taking is being performed at the array. The results of the reconstruction of registered extensive air showers using the methods developed within the framework of the cluster approach to experimental data analysis are presented.
- ПубликацияТолько метаданныеExpected Spectra of Muon-Induced Cascades in IceCube(2019) Khokhlov, S. S.; Bogdanov, A. G.; Kokoulin, R. P.; Petrukhin, A. A.; Sozinov, E. S.; Yurina, E. A.; Хохлов, Семен Сергеевич; Богданов, Алексей Георгиевич; Кокоулин, Ростислав Павлович; Петрухин, Анатолий Афанасьевич; Юрина, Екатерина Александровна© 2019, Pleiades Publishing, Ltd.The neutrino telescope IceCube is capable to reconstruct the energy spectrum of muons in very high energy region by means of measurements of muon-induced cascades. To compare with experimental data, the expected spectra of cascades were theoretically estimated. Calculations were performed for two variants of muon spectrum on the ice surface: a simple power-law energy spectrum with a differential slope index −3.7, and a composite spectrum combined of two power spectra with differential indexes −3.7 and −2.7. The differential spectra of cascades for different zenith angles and integral cascade spectra calculated for two variants of muon spectra are discussed.
- ПубликацияТолько метаданныеModeling PRISMA-32 and URAN Responses to the Passage of Extensive Air Showers(2021) Izhbulyakova, Z. T.; Bogdanov, A. G.; Bogdanov, F. A.; Gromushkin, D. M.; Богданов, Алексей Георгиевич; Громушкин, Дмитрий Михайлович© 2021, Allerton Press, Inc.Abstract: The PRISMA-32 and URAN arrays were created as parts of the NEVOD Unique Scientific Facility (MEPhI) to study the neutron component of extensive air showers (EASes). The responses of the facilities to the passage of an EAS are modeled to correctly interpret the experimental data of the arrays. This allows determination of the lateral distribution function of the charged EAS component and the dependence of the average number of neutrons detected on the EAS size.
- ПубликацияТолько метаданныеNEVOD - An experimental complex for multi-component investigations of cosmic rays and their interactions in the energy range 1-1010GeV(2021) Mannocchi, G.; Trinchero, G.; Yashin, I. I.; Amelchakov, M. B.; Astapov, I. I.; Barbashina, N. S.; Bogdanov, A. G.; Bogdanov, F. A.; Borog, V. V.; Chiavassa, A.; Dmitrieva, A. N.; Gromushkin, D. M.; Khokhlov, S. S.; Kindin, V. V.; Kokoulin, R. P.; Kompaniets, K. G.; Konovalova, A. Y.; Kovylyaeva, A. A.; Mishutina, Y. N.; Ovchinnikov, V. V.; Petrukhin, A. A.; Shulzhenko, I. A.; Shutenko, V. V.; Stenkin, Y. V.; Vorobyev, V. S.; Yurin, K. O.; Yurina, E. A.; Zadeba, E. A.; Яшин, Игорь Иванович; Амельчаков, Михаил Борисович; Астапов, Иван Иванович; Барбашина, Наталья Сергеевна; Богданов, Алексей Георгиевич; Борог, Владимир Викторович; Дмитриева, Анна Николаевна; Громушкин, Дмитрий Михайлович; Хохлов, Семен Сергеевич; Киндин, Виктор Владимирович; Кокоулин, Ростислав Павлович; Компаниец, Константин Георгиевич; Коновалова, Алена Юрьевна; Мишутина, Юлия Николаевна; Овчинников, Вячеслав Васильевич; Петрухин, Анатолий Афанасьевич; Шульженко, Иван Андреевич; Шутенко, Виктор Викторович; Стенькин, Юрий Васильевич; Воробьев, Владислав Станиславович; Юрина, Екатерина Александровна; Задеба, Егор Александрович© 2021 IOP Publishing Ltd and Sissa Medialab.The Experimental Complex (EC) NEVOD includes a number of detectors used to carry out basic research of cosmic rays (CR) and their interactions in the energy range 1011-1019 eV and applied research of the heliosphere, magnetosphere and atmosphere of the Earth by the muonography method which is based on the analysis of spatial-angular variations of the muon flux generated by primary CR particles with energies of 10
- ПубликацияТолько метаданныеNear-Vertical Local Density Spectra of the EAS Charged Particles in the Energy Range of 1014–1017 eV(2019) Amelchakov, M. B.; Bogdanov, A. G.; Khokhlov, S. S.; Kokoulin, R. P.; Petrukhin, A. A.; Shulzhenko, I. A.; Yashin, I. I.; Амельчаков, Михаил Борисович; Богданов, Алексей Георгиевич; Хохлов, Семен Сергеевич; Кокоулин, Ростислав Павлович; Петрухин, Анатолий Афанасьевич; Шульженко, Иван Андреевич; Яшин, Игорь Иванович© 2019, Pleiades Publishing, Ltd.The results of the long-term measurements of extensive air showers with the calibration telescope system of the Cherenkov water detector are presented for an energy range of 1014–1017 eV. We have used two independent methods for reconstruction of the charged particle local density spectrum: by the multiplicity of the hit counters and by their amplitude responses. By means of Geant4 calculations, we have shown how the structure of the building and the water tank affect the results of the spectrum reconstruction. We obtained two different exponents of charged particles’ local density spectra for CTS top and bottom plane. The results are compared with CORSIKA calculations and data from other setups.
- ПубликацияТолько метаданныеMulticomponent Registration of the EAS(2019) Mannocchi, G.; Trinchero, G.; Amelchakov, M. B.; Barbashina, N. S.; Bogdanov, A. G.; Gromushkin, D. M.; Zadeba, E. A.; Kindin, V. V.; Kokoulin, R. P.; Kompaniets, K. G.; Chiavassa, A.; Likiy, O. I.; Petrukhin, A. A.; Stenkin, Y. V.; Khokhlov, S. S.; Shulzhenko, I. A.; Shutenko, V. V.; Yurin, K. O.; Yashin, I. I.; Амельчаков, Михаил Борисович; Барбашина, Наталья Сергеевна; Богданов, Алексей Георгиевич; Громушкин, Дмитрий Михайлович; Задеба, Егор Александрович; Киндин, Виктор Владимирович; Кокоулин, Ростислав Павлович; Компаниец, Константин Георгиевич; Петрухин, Анатолий Афанасьевич; Стенькин, Юрий Васильевич; Хохлов, Семен Сергеевич; Шульженко, Иван Андреевич; Шутенко, Виктор Викторович; Яшин, Игорь Иванович© 2019, Allerton Press, Inc.Abstract: The NEVOD experimental complex was created at MEPhI. It includes several facilities for studying the electron–photon, muon, and hadron components of the EAS in the energy range of 1 PeV to 1 EeV. This work presents the first results for two months of the joint operation of five facilities (NEVOD-EAS, CWD, CTS, PRISMA-32, and DECOR). The problems of synchronizing the facilities and selecting joint events are considered. The experimental data of these facilities are analyzed for different components of the EAS in overlapping energy ranges.
- ПубликацияТолько метаданныеDependence of the Energy Deposit of Muon Bundles on Local Muon Density and Zenith Angle(2019) Mannocchi, G.; Saavedra, O.; Trinchero, G.; Yurina, E. A.; Barbashina, N. S.; Bogdanov, A. G.; Kindin, V. V.; Kokoulin, R. P.; Kompaniets, K. G.; Petrukhin, A. A.; Khomyakov, V. A.; Khokhlov, S. S.; Shutenko, V. V.; Yashin, I. I.; Юрина, Екатерина Александровна; Барбашина, Наталья Сергеевна; Богданов, Алексей Георгиевич; Киндин, Виктор Владимирович; Кокоулин, Ростислав Павлович; Компаниец, Константин Георгиевич; Петрухин, Анатолий Афанасьевич; Хохлов, Семен Сергеевич; Шутенко, Виктор Викторович; Яшин, Игорь Иванович© 2019, Allerton Press, Inc.Abstract: Energy characteristics of the muon component of extensive air showers (EASes) are investigated at the NEVOD experimental complex in order to solve the problem of a detected excess of muons in EASes at ultrahigh energies, relative to simulation results. The dependences of the energy deposit of muon bundles on the zenith angle and the local muon density are obtained for primary energies of 10–1000 PeV. The results from comparing the data to simulations performed with the CORSIKA program are presented.