Персона:
Яшин, Игорь Иванович

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Научная группа

Организационные подразделения

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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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Яшин

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Игорь Иванович

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Теперь показываю 1 - 10 из 14

Только метаданные
Local 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 Александровна
Data 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.
Только метаданные
Near-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.
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Energy spectrum of cascade showers initiated by cosmic ray muons in the Cherenkov water detector
(2019) Khokhlov, S. S.; Bogdanov, A. G.; Khomyakov, V. A.; Kindin, V. V.; Kokoulin, R. P.; Petrukhin, A. A.; Shutenko, V. V.; Yashin, I. I.; Хохлов, Семен Сергеевич; Богданов, Алексей Георгиевич; Киндин, Виктор Владимирович; Кокоулин, Ростислав Павлович; Петрухин, Анатолий Афанасьевич; Шутенко, Виктор Викторович; Яшин, Игорь Иванович
Results of analysis of experimental data on cascade showers with energies of 0.1 - 10 TeV initiated by muons in the Cherenkov water detector NEVOD are presented. The method of selection and reconstruction of cascade parameters in the volume of the detector is discussed. Experimental distributions of cascade axes in zenith angle and energy spectrum of cascades are obtained. The measured distributions are compared with results of calculations.
Только метаданные
Investigating Cascade Showers Generated by Muons in a Cherenkov Water Detector
(2019) Kokoulin, R. P.; Barbashina, N. S.; Bogdanov, A. G.; Kindin, V. V.; Kompaniets, K. G.; Petrukhin, A. A.; Khomyakov, V. A.; Khokhlov, S. S.; Shutenko, V. V.; Yashin, I. I.; Кокоулин, Ростислав Павлович; Барбашина, Наталья Сергеевна; Богданов, Алексей Георгиевич; Киндин, Виктор Владимирович; Компаниец, Константин Георгиевич; Петрухин, Анатолий Афанасьевич; Хохлов, Семен Сергеевич; Шутенко, Виктор Викторович; Яшин, Игорь Иванович
© 2019, Allerton Press, Inc.Abstract: Results are presented from analyzing experimental data on 0.1–10 TeV cascade showers generated by muons in the NEVOD Cherenkov water detector. The procedure for selecting and reconstructing the parameters of events with cascades in the detector volume is discussed. Results are presented from measurements of the zenith angle distribution of cascades for different energies. The measured distributions are compared to results from calculations.
Только метаданные
Multicomponent 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.
Только метаданные
Dependence 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.
Только метаданные
Investigation 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.
Открытый доступ
Energy loss measurements of inclined muon bundles in the Cherenkov water detector
(2019) Kokoulin, R. P.; Barbashina, N. S.; Bogdanov, A. G.; Khokhlov, S. S.; Khomyakov, V. A.; Kindin, V. V.; Kompaniets, K. G.; Petrukhin, A. A.; Shutenko, V. V.; Yashin, I. I.; Yurina, E. A.; Кокоулин, Ростислав Павлович; Барбашина, Наталья Сергеевна; Богданов, Алексей Георгиевич; Хохлов, Семен Сергеевич; Киндин, Виктор Владимирович; Компаниец, Константин Георгиевич; Петрухин, Анатолий Афанасьевич; Шутенко, Виктор Викторович; Яшин, Игорь Иванович; Юрина, Екатерина Александровна
An experiment on the measurements of the energy deposit of inclined cosmic ray muon bundles is being conducted at the experimental complex NEVOD (MEPhI). The complex includes the Cherenkov water calorimeter with a volume of 2000 m(3) and the coordinate-tracking detector DECOR with a total area of 70 m(2). The DECOR data are used to determine the local muon densities in the bundle events and their arrival directions, while the energy deposits (and hence the average muon energy loss) are evaluated from the Cherenkov calorimeter response. Average energy loss carries information about the mean muon energy in the bundles. The detection of the bundles in a wide range of muon multiplicities and zenith angles gives the opportunity to explore the energy range of primary cosmic ray particles from about 10 to 1000 PeV in the frame of a single experiment with a relatively small compact setup. Experimental results on the dependence of the muon bundle energy deposit on the zenith angle and the local muon density are presented and compared with expectations based on simulations of the EAS muon component with the CORSIKA code.
Открытый доступ
The 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 Борисович
The 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.
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Intensity 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 Владимирович
Data 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.