Персона: Астапов, Иван Иванович
Загружается...
Email Address
Birth Date
Научные группы
Организационные подразделения
Организационная единица
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.
Статус
Фамилия
Астапов
Имя
Иван Иванович
Имя
85 results
Результаты поиска
Теперь показываю 1 - 10 из 85
- ПубликацияОткрытый доступThe hardware function of the URAGAN muon hodoscope(2019) Peregoudov, D.; Gvishiani, A.; Getmanov, V.; Dobrovolsky, M.; Astapov, I.; Barbashina, N.; Dmitrieva, A.; Shutenko, V. V.; Yashin, I.; Астапов, Иван Иванович; Барбашина, Наталья Сергеевна; Дмитриева, Анна Николаевна; Шутенко, Виктор Викторович; Яшин, Игорь Иванович© Published under licence by IOP Publishing Ltd. The problem of the hardware response function calculation for the URAGAN hodoscope (MEPhI) is analyzed. The simpli ed hodoscope model is developed for which the response function is found out analytically. It is shown that the presence of non-detecting intervals (gaps between detectors) leads to the response function that includes azimuthal dependence. A numerical procedure of the response function calculation is developed for the URAGAN hodoscope. The result is in correlation with the averaged matrix data from the hodoscope. The application of response function analyses to detecting of reduced muon ux areas is demonstrated. Further re nement of response function calculation is discussed.
- ПубликацияОткрытый доступA method of two-dimensional filtering of modulated matrix data sequences(2019) Getmanov, V. G.; Gvishiani, A. D.; Dobrovolsky, M. N.; Peregoudov, D. V.; Astapov, I. I.; Barbashina, N. S.; Dmitrieva, A. N.; Shutenko, V. V.; Yashin, I. I.; Астапов, Иван Иванович; Барбашина, Наталья Сергеевна; Дмитриева, Анна Николаевна; Шутенко, Виктор Викторович; Яшин, Игорь Иванович© 2019 Published under licence by IOP Publishing Ltd.The method of two-dimensional filtering of modulated matrix data sequences is proposed. The structure of a two-dimensional filter based on operations of element-by-element matrix multiplications is developed. An application of the two-dimensional filtering of the URAGAN muon hodoscope matrix data sequence for the elimination of muon flux diurnal modulations is discussed.
- ПубликацияОткрытый доступTAIGA—A hybrid array for high-energy gamma astronomy and cosmic-ray physics(2020) Budnev, N.; Bezyazeekov, P. A.; Borodin, A.; Bruckner, M.; Astapov, I.; Kindin, V.; Kokoulin, R.; Kompaniets, K.; Petrukhin, A.; Yashin, I.; Астапов, Иван Иванович; Киндин, Виктор Владимирович; Кокоулин, Ростислав Павлович; Компаниец, Константин Георгиевич; Петрухин, Анатолий Афанасьевич; Яшин, Игорь Иванович© 2019 Elsevier B.V. The combination of a wide angle timing Cherenkov array and Imaging Atmospheric Cherenkov Telescopes operated in mono mode offers a cost-effective way to construct a few square kilometers array for ultrahigh-energy gamma astronomy. The first stage of the TAIGA Observatory (Tunka Advanced Instrument for cosmic ray physics and Gamma Astronomy) is described here. It will comprise TAIGA-HiSCORE - 120 wide angle Cherenkov stations distributed over an area of 1.0 km 2 and three IACTs (TAIGA-IACT).
- ПубликацияТолько метаданныеSearch for High-Energy Gamma Quanta from the Cygnus Cocoon Source in October–November 2020(2024) Okuneva, E.; Sveshnikova, L.; Astapov, I.; Kindin, V.; Kokoulin, R.; Kompaniets, K.; Petrukhin, A.; Yashin, I.; Астапов, Иван Иванович; Киндин, Виктор Владимирович; Кокоулин, Ростислав Павлович; Компаниец, Константин Георгиевич; Петрухин, Анатолий Афанасьевич; Яшин, Игорь Иванович
- ПубликацияТолько метаданныеInvesigation of the Local Anisotropy of Cosmic Ray Muon Flux During Coronal Mass Ejections in 2007–2018(2019) Astapov, I. I.; Barbashina, N. S.; Dmitrieva, A. N.; Konovalova, A. Y.; Osetrova, N. V.; Shutenko, V. V.; Yashin, I. I.; Астапов, Иван Иванович; Барбашина, Наталья Сергеевна; Дмитриева, Анна Николаевна; Коновалова, Алена Юрьевна; Шутенко, Виктор Викторович; Яшин, Игорь Иванович© 2019, Pleiades Publishing, Ltd.Coronal mass ejections are among the most powerful disturbances of the interplanetary space. They can influence the state of the near-Earth space, including magnetosphere of the Earth. In addition, such disturbances modulate the flux of cosmic rays and penetrate both the heliosphere and the Earth’s magnetosphere. In order to find an early alert of such events, it is necessary to investigate the flux of particles arriving to the Earth and providing information about events in the heliosphere. The paper presents the results of investigation of the anisotropy of the cosmic ray muon flux by means of the muon hodoscope URAGAN in the period from 2007 to 2018.
- ПубликацияТолько метаданныеGeant4 simulation of the Tunka-Grande experiment(2021) Monkhoev, R.; Ternovoy, M.; Bezyazeekov, P.; Borodin, A.; Astapov, I.; Kindin, V.; Kokoulin, R.; Kompaniets, K.; Petrukhin, A.; Yashin, I.; Астапов, Иван Иванович; Киндин, Виктор Владимирович; Кокоулин, Ростислав Павлович; Компаниец, Константин Георгиевич; Петрухин, Анатолий Афанасьевич; Яшин, Игорь Иванович© 2021 Institute of Physics Publishing. All rights reserved.The Tunka-Grande array is part of a single experimental complex, which also includes the Tunka-133 and TAIGA-HiSCORE (High Sensitivity COsmic Rays and gamma Explorer) wide-angle Cherenkov arrays, TAIGA-IACT array (Imaging Atmospheric Cherenkov Telescope) and TAGA-MUON scintillation array. This complex is located in the Tunka Valley (Buryatia Republic, Russia), 50 km from Lake Baikal. It is designed to study the energy spectrum and the mass composition of charged cosmic rays in the energy range 100 TeV - 1000 PeV, to search for diffuse gamma rays above 100 TeV and to study local sources of gamma rays with energies above 30 TeV. This report outlines 3 key points. The first is the description of the Tunka-Grande scintillation array. The second one presents the computer simulation strategy of the Tunka Grande array based on the Geant4 software. The third one is devoted to the prospects for future research in the field of cosmic ray physics and gamma-ray astronomy using simulation results.
- ПубликацияТолько метаданныеInvestigating the Relationship between the Parameters of Cosmic Ray Variations Registered on Earth and Coronal Holes on the Sun(2021) Osetrova, N. V.; Astapov, I. I.; Barbashina, N. S.; Konovalova, A. Y.; Shutenko, V. V.; Астапов, Иван Иванович; Барбашина, Наталья Сергеевна; Коновалова, Алена Юрьевна; Шутенко, Виктор Викторович© 2021, Allerton Press, Inc.Abstract: The high-speed solar wind is one of the main reasons for disturbances in the interplanetary magnetic field during years of low solar activity. These disturbances lead to modulations of cosmic ray fluxes that penetrate the Earth’s magnetosphere. This work presents results from analyzing disturbances in the angular distribution of cosmic rays in the GSE system registered by the URAGAN muon hodoscope for years of geomagnetic disturbances during the periods of solar activity minima in 2009–2010 and 2018–2019.
- ПубликацияОткрытый доступTunka-Grande and TAIGA-Muon scintillation arrays: Status and prospects(2020) Monkhoev, R.; Bezyazeekov, P.; Borodin, A.; Brueckner, M.; Astapov, I.; Kindin, V.; Kokoulin, R.; Kompaniets, K.; Petrukhin, A.; Yashin, I.; Астапов, Иван Иванович; Киндин, Виктор Владимирович; Кокоулин, Ростислав Павлович; Компаниец, Константин Георгиевич; Петрухин, Анатолий Афанасьевич; Яшин, Игорь Иванович© Published under licence by IOP Publishing Ltd.The Tunka-Grande and TAIGA-Muon arrays are the part of a single experimental complex, which also includes the Tunka-133 and TAIGA-HiSCORE (High Sensitivity COsmic Rays and gamma Explorer) wide-angle Cherenkov arrays, TAIGA-IACT array (Imaging Atmospheric Cherenkov Telescope) and Tunka-Rex radio antennas array (Tunka Radio Extension). This complex is located in the Tunka Valley (Buryatia Republic, Russia), 50 km from Lake Baikal. It is aimed at investigating the energy spectrum and mass composition of charged cosmic rays in the energy range 100 TeV - 1000 PeV, searching for diffuse gamma rays above 100 TeV and studying local sources of gamma rays with energies above 30 TeV. This report outlines 3 key points. The first is a description of the Tunka-Grande and TAIGA-Muon scintillation arrays. The second part presents preliminary results of the search for diffuse gamma rays with energies above 50 PeV according to the Tunka-Grande data. The third part is devoted to the prospects of the search for diffuse gamma rays with energies above 100 TeV using the TAIGA-Muon array.
- ПубликацияОткрытый доступMegascience projects in modern nuclear physics and personnel training(2020) Moshkova, D. M.; Barbashina, N. S.; Astapov, I. I.; Delov, M. I.; Vasiliev, A. N.; Барбашина, Наталья Сергеевна; Астапов, Иван Иванович; Делов, Максим Игоревич; Васильев, Александр Николаевич© Published under licence by IOP Publishing Ltd.Modern nuclear physics is impossible without the implementation of projects of the megascience class, for the creation of which the efforts of many organizations and countries are consolidated. The level and complexity of experiments carried out with the use of such facilities is provided by scientific researchers with a wide range of competencies. The education of such researchers is an important task for scientific and educational organizations. These issues were discussed at the 2nd conference "Personnel training and legal support for the implementation of scientific projects of the Mega-science class"organized by National Research Nuclear University MEPhI and Kutafin Moscow State Law University on June 25, 2020. The aim of the Conference was to discuss the policy management issues of implementation of the Mega-science class research projects.
- ПубликацияОткрытый доступThe hybrid installation TAIGA: Design, status and preliminary results(2019) Lubsandorzhiev, N.; Bezyazeekov, P.; Borodin, A.; Brueckner, M.; Astapov, I.; Kindin, V.; Kokoulin, R.; Kompaniets, K.; Petrukhin, A.; Yashin, I.; Астапов, Иван Иванович; Киндин, Виктор Владимирович; Кокоулин, Ростислав Павлович; Компаниец, Константин Георгиевич; Петрухин, Анатолий Афанасьевич; Яшин, Игорь Иванович© Copyright owned by the author(s) under the terms of the Creative CommonsThe hybrid installation TAIGA (Tunka Advanced Instrument for cosmic rays and Gamma Astronomy) is under construction to study cosmic and gamma rays at energies 1013-1018 eV. It will incorporate timing wide-angle EAS Cherenkov array (TAIGA-HiSCORE) and number of imaging atmospheric Cherenkov telescopes (TAIGA-IACT). The first stage of TAIGA will include ~100 wide-angle non-imaging optical stations of TAIGA-HiSCORE, distributed over an area of ~1 km2 and three imaging telescopes at a distance of 300-500 m from each other. A combined method will be used to distinguish gamma-rays namely EAS parameters will be reconstructed by TAIGA-HiSCORE and a gamma-hadron separation will be carried out by TAIGA-IACT. With such an approach a hybrid detector will be built with a large area but with a relatively small number of telescopes.