2019, Adriani, O., Barbarino, G., Bazilevskaya, G. A., Bellotti, R., Mikhailov, V. V., Galper, A. M., Karelin, A. V., Koldashov, S. V., Koldobskiy, S. A., Leonov, A. A., Malakhov, V. V., Mayorov, A. G., Spillantini, P., Voronov, S. A., Yurkin, Yu. T., Михайлов, Владимир Владимирович, Колдобский, Сергей Александрович, Леонов, Алексей Анатольевич, Малахов, Виталий Валерьевич, Майоров, Андрей Георгиевич, Воронов, Сергей Александрович, Юркин, Юрий Тихонович

© Copyright owned by the author(s) under the terms of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License (CC BY-NC-ND 4.0).The PAMELA magnetic spectrometer, located on board the Resurs-DK1 satellite on Earth polar orbit with altitude of 350-600 km, measured the fluxes of cosmic ray particles and antiparticles in a wide energy range from 50 MeV to several TeVs. In this paper new results on the "all-electron" (sum electrons and positrons) spectrum are presented. New improved analysis on the full data set from 2006 to 2016 allows a significant increase in statistic compared to previously published results and an extension of energy interval up to 1 TeV.

2019, Bogomolov, E. A., Vasilyev, G. I., Menn, W., Voronov, S. A., Воронов, Сергей Александрович

© 2019, Pleiades Publishing, Ltd.Analysis of the isotope composition of nuclei in galactic cosmic rays (GCR) in the PAMELA orbital international experiment allows studying the problems of cosmic-ray origin and propagation in our Galaxy. PAMELA magnetic spectrometer data provided the significant progress in the study of the light nuclei isotope composition of GCR from H to Be in the energy range ∼0.1–1 GeV/nucleon. This makes it possible to estimate the contribution of local (∼100 pc) young (∼106 years) interstellar sources (LISS) into GCR fluxes from supernova explosions. The analysis of boron (B) isotope fluxes in the GCR has so far been carried out only in the energy range ∼0.08–0.17 GeV/nucleon in the space experiments Voyager, Ulysses, ACE. In the present contribution the attempt was done to determine the 11B/10B ratio in the energy range ∼0.1–1.0 GeV/nucleon for the first time on the base of 2006–2014 PAMELA data using the measurements of the detected nuclei rigidities, velocities and ionization losses in a multilayer calorimeter. The new PAMELA results are consistent with existing as experimental data and those expected from simulations. However the statistical and systematic measurement uncertainties do not allow to separate the local boron source contributions into GCR fluxes. The preliminary results of the boron isotope flux analysis in GCR (10B, 11B spectra and 11B/10B ratio dependences on the rigidity and energy) are presented as well as the existing measurement data and simulation results.

2022, Киселев, И. А., Куць, В. А., Воронов, С. А., Воронов, Сергей Александрович

Программа представляет собой расчетное ядро, основанное на применении метода конечных элементов для решения задач механики деформируемого твердого тела. Программа обеспечивает возможность выполнения расчетов для конечно-элементных (КЭ) моделей большой размерности (порядок - 100 млн. ст. св.) за счет применения метода супер-элементов (СЭ). Построение многоуровневой СЭ-модели осуществляется автоматически при помощи методов теории графов. Реализована технология гибридных параллельных вычислений на центральном и графическом процессоре (GPU). Реализованы основные типы объемных и конструкционных КЭ, многоточечные связи МРСДВЕ2/3. Основные типы решаемых задач: линейно-упругие, физически и геометрически-нелинейные задачи статики, расчет собственных частот и форм колебаний, моделирование движения в инерциальной и неинерциальной вращающейся системе отсчета, теплопередача. Тип ЭВМ: IBM PC-совмест. ПК; OC: Windows 7 и выше.

2021, Bruno, A., Martucci, M., Cafagna, F. S., Sparvoli, R., Galper, A. M., Koldashov, S. V., Koldobskiy, S., Leonov, A. A., Malakhov, V. V., Mayorov, A. G., Mikhailov, V. V., Spillantini, P., Voronov, S. A., Yurkin, Y. T., Zharaspayev, T. R., Колдобский, Сергей Александрович, Леонов, Алексей Анатольевич, Малахов, Виталий Валерьевич, Майоров, Андрей Георгиевич, Михайлов, Владимир Владимирович, Воронов, Сергей Александрович, Юркин, Юрий Тихонович

© 2021. The American Astronomical Society. All rights reserved..We present a study of the solar-cycle variations of >80 MeV proton flux intensities in the lower edge of the inner radiation belt, based on the measurements of the Payload for Antimatter Matter Exploration and Light-nuclei Astrophysics (PAMELA) mission. The analyzed data sample covers an ∼8 yr interval from 2006 July to 2014 September, thus spanning from the decaying phase of the 23rd solar cycle to the maximum of the 24th cycle. We explored the intensity temporal variations as a function of drift shell and proton energy, also providing an explicit investigation of the solar modulation effects at different equatorial pitch angles. PAMELA observations offer new important constraints for the modeling of low-altitude particle radiation environment at the highest trapping energies.

2021, Ngobeni, M. D., Lagoida, I. A., Mikhailov, V. V., Voronov, S. A., Лагойда, Илья Алексеевич, Михайлов, Владимир Владимирович, Воронов, Сергей Александрович

© 2021, Allerton Press, Inc.Abstract: A Forbush decrease is an effect in the physics of cosmic rays that manifests as a sudden drop in the intensity of cosmic rays in interplanetary space. This effect is now mostly studied by ground-based detectors. This work presents the energy dependences of Forbush decrease characteristics obtained using data of the PAMELA spectrometer, which measured fluxes of cosmic rays in the Earth’s orbit as part of the Resurs DK-1 satellite.

2023, Lagoida, I. A., Voronov, S. A., Mikhailov, V. V., Galper, A. M., Leonov, A. N., Malakhov, V., Mayorov, A., Yurkin, Y. T., Лагойда, Илья Алексеевич, Воронов, Сергей Александрович, Михайлов, Владимир Владимирович, Леонов, Алексей Анатольевич, Малахов, Виталий Валерьевич, Майоров, Андрей Георгиевич, Юркин, Юрий Тихонович

2022, Киселев, И. А., Жуков, Н. А., Куць, В. А., Воронов, С. А., Воронов, Сергей Александрович

Программа для ЭВМ представляет собой расчетное ядро для решения обратных задач мониторинга состояния изделий машиностроения с учетом фактических режимов эксплуатации. Входные данные: конечно-элементная (КЗ) модель конструкции и результаты измерения параметров напряженно-деформированного состояния конструкции в выбранных контрольных точках (сигналы акселерометров, тензорезисторов и др.). Восстановление движения КЭ-модели по сигналам в контрольных точках конструкции выполняется в подпространстве статических и модальных базисных векторов деформирования. Расчет накопления усталостной поврежденности выполняется на основе гипотезы линейного суммирования и применения метода конечных элементов. Программа позволяет получить поля распределения накопленной поврежденности во времени для всей КЭ-модели конструкции, предсказать остаточный ресурс и положения наиболее опасных зон конструкции. Тип реализующей ЭВМ: IBM PC. Операционная система: Windows 7 и старше.

2019, Karelin, A. V., Voronov, S. A., Воронов, Сергей Александрович

© 2019, Pleiades Publishing, Ltd.Searches for the anisotropy of the total electron and positron fluxes in high-energy galactic cosmic rays are performed. Data collected by the PAMELA magnetic spectrometer from June 2006, when it was launched into Earth’s orbit, to 2016 were used for the respective analysis. The main event selection and a determination of particle arrival directions were accomplished by means of a position-sensitive microstrip calorimeter. A neutron detector was used to suppress additionally the background of protons and nuclei. An analysis of information obtained over a nearly ten-year period of measurements made it possible to set upper limits on the amplitude of the dipole anisotropy of the total electron and positron fluxes for two energy ranges, between 25 and 100 GeV and between 100 GeV and 1 TeV. These results supplement data from other satellite-borne experiments, AMS-02 and Fermi.

2021, Bruno, A., Martucci, M., Cafagna, F. S., Sparvoli, R., Galper, A. M., Koldashov, S. V., Koldobskiy, S., Leonov, A. A., Malakhov, V. V., Mayorov, A. G., Mikhailov, V. V., Spillantini, P., Voronov, S. A., Yurkin, Y. T., Колдобский, Сергей Александрович, Леонов, Алексей Анатольевич, Малахов, Виталий Валерьевич, Майоров, Андрей Георгиевич, Михайлов, Владимир Владимирович, Воронов, Сергей Александрович, Юркин, Юрий Тихонович

© 2021. The American Astronomical Society. All rights reserved..We present a study of the east-west anisotropy of trapped-proton fluxes in low-Earth orbit based on the measurements of the Payload for Antimatter Matter Exploration and Light-nuclei Astrophysics (PAMELA) experiment. The differential intensities of eastward- and westward-traveling protons detected in the South Atlantic Anomaly region were estimated as a function of equatorial pitch angle and drift shell, for six energy bins between 80 MeV and 2 GeV. We found that, as a consequence of the strong atmospheric gradient coupled with the large gyroradius in this energy range, the intensities of eastward fluxes exceed those of westward fluxes by a factor of ∼10-20. However, the reported directional asymmetry also depends on the sign of the local flux gradient, resulting in more intense westward fluxes beyond the radial distances where the inner belt peaks. PAMELA observations can be used to improve the description of the near-Earth radiation environment at lowest altitudes and highest trapping energies, where current theoretical and empirical models are affected by the largest uncertainties.

2022, Marcelli, N., Boezio, M., Lenni, A., Menn, W., Galper, A. M., Koldashov, S. V., Koldobskiy, S., Leonov, A. A., Malakhov, V. V., Mayorov, A. G., Mikhailov, V. V., Spillantini, P., Voronov, S. A., Yurkin, Y. T., Колдобский, Сергей Александрович, Леонов, Алексей Анатольевич, Малахов, Виталий Валерьевич, Майоров, Андрей Георгиевич, Михайлов, Владимир Владимирович, Воронов, Сергей Александрович, Юркин, Юрий Тихонович

© 2022. The Author(s). Published by the American Astronomical Society..Time-dependent energy spectra of galactic cosmic rays (GCRs) carry fundamental information regarding their origin and propagation. When observed at the Earth, these spectra are significantly affected by the solar wind and the embedded solar magnetic field that permeates the heliosphere, changing significantly over an 11 yr solar cycle. Energy spectra of GCRs measured during different epochs of solar activity provide crucial information for a thorough understanding of solar and heliospheric phenomena. The PAMELA experiment collected data for almost 10 years (2006 June 15-2016 January 23), including the minimum phase of solar cycle 23 and the maximum phase of solar cycle 24. In this paper, we present new spectra for helium nuclei measured by the PAMELA instrument from 2010 January to 2014 September over a three-Carrington-rotation time basis. These data are compared to the PAMELA spectra measured during the previous solar minimum, providing a picture of the time dependence of the helium-nuclei fluxes over a nearly full solar cycle. Time and rigidity dependencies are observed in the proton-to-helium flux ratios. The force-field approximation of the solar modulation was used to relate these dependencies to the shapes of the local interstellar proton and helium-nuclei spectra.