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.

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.

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.

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 Александровна

Parameters 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.

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.

2019, Izhbulyakova, Z. T., Amelchakov, M. B., Vorobyev, V. S., Kovylyaeva, A. A., Kokoulin, R. P., Khohlov, S. S., Амельчаков, Михаил Борисович, Воробьев, Владислав Станиславович, Кокоулин, Ростислав Павлович, Хохлов, Семен Сергеевич

© 2019 Published under licence by IOP Publishing Ltd. The work is devoted to the study of the anisotropy of the high energy cosmic ray flux by means of muon bundles registered during 2012-2018 with the coordinate-tracking detector DECOR, which is a part of the Unique Scientific Facility Experimental complex NEVOD. We have analyzed data for two event samples corresponding to E > 10 15 eV and E > 10 16 eV energy ranges of primary particles. The method of data processing is described and estimates of the dipole anisotropy parameters (the amplitude and the phase) are presented.