BEGIN:VCALENDAR VERSION:2.0 PRODID:-//CERN//INDICO//EN BEGIN:VEVENT SUMMARY:Modeling of threshold energy of a small-size Cherenkov telescope w ith a SiPM camera DTSTART;VALUE=DATE-TIME:20210610T104000Z DTEND;VALUE=DATE-TIME:20210610T105500Z DTSTAMP;VALUE=DATE-TIME:20260415T000513Z UID:indico-contribution-6-182@indico.nevod.mephi.ru DESCRIPTION:Speakers: Alexander Krassilchtchikov (Ioffe Institute)\, Eugen e Kholupenko (Ioffe Institute)\nFull-particle Monte-Carlo simulations of e xtensive air showers (EASs)\ninduced by 0.3-30 TeV cosmic gamma-rays and c osmic ray protons\nas well as of Cherenkov radiation generated by such sho wers have\nbeen carried out. Further modeling of Cherenkov photon transpor t in the\noptical system and camera of a ~10 m(2) mirror area imaging Cher enkov telescope\nbased of modern OnSemi/MicroFJ silicon photomultipliers h as been undertaken.\nIt has been shown that even with strict selection cri teria which would ensure\na high quality of the EAS images recorded by the detector camera\,\nthe threshold detection energy would not exceed 0.8 Te V\, which is approximately\ntwice as low as the threshold currently achiev ed at the small-size TAIGA-IACT\ntelescope with similar mirror area and a camera based on vacuum photomultiplier tubes.\n\nhttps://indico.nevod.meph i.ru/event/6/contributions/182/ LOCATION:Online Zoom URL:https://indico.nevod.mephi.ru/event/6/contributions/182/ END:VEVENT BEGIN:VEVENT SUMMARY:Status and Prospects of UHECRs Studying by Orbiting Telescopes DTSTART;VALUE=DATE-TIME:20210609T082000Z DTEND;VALUE=DATE-TIME:20210609T083500Z DTSTAMP;VALUE=DATE-TIME:20260415T000513Z UID:indico-contribution-6-157@indico.nevod.mephi.ru DESCRIPTION:Speakers: Pavel Klimov (SINP MSU)\nDespite the long-term opera tion of large ground installations\, the problem of sources of ultra-high- energy cosmic rays (UHECRs) is still far from its solution. An important s tep towards solving thе problem may be the use of a new technique for reg istering extensive air showers (EAS) in the atmosphere of Earth\, namely m easuring a fluorescent track from orbit. This observation method allows on e to achieve a large exposure and to record events throughout the celestia l sphere with one device.\n\nA program for registering UHECRs from Earth ’s orbit is being implemented in a series of projects. The first of them \, the TUS detector\, was launched aboard the Lomonosov satellite in 2016. During the operation of the detector\, the spatiotemporal structure of th e UV glow of the atmosphere was studied\, and information was obtained on transient flashes that trigger the detector. A number of UV tracks similar to those expected from EAS were recorded in the nocturnal atmosphere.\n\n The next step should be a full-scale telescope with a larger optical syste m and a field of view\, which allows recording dozens of events per year b eyond the GZK cut-off. Such a project\, named KLYPVE-EUSO is being develop ed by the JEM-EUSO collaboration for installation on board the Internation al Space Station. Variants of the lens and mirror telescopes are considere d.\n\nDuring the preparation of the K-EUSO projecta number of pathfinders are being developed: balloon experiments EUSO-Balloon and EUSO-SPB1\, fluo rescence detector at the Telescope Array site. The UV Atmosphere (Mini-EUS O) experiment is operating onboard the Russian Segment of the ISS since Oc tober\, 2019. \n\nA more advanced experiment POEMMA (Probe of Extreme Mult i-Messenger Astrophysics) is planned to be implemented after K-EUSO. It is aimed at detecting both UHECRs and high-energy (above 20 PeV) neutrinos. POEMMA is a system of two telescopes on separate spacecrafts that provide a stereoscopic image of the EAS track and registration of the direct Chere nkov radiation from ascending showers of energetic neutrinos. Currently EU SO-SPB2 project with Cherenkov and fluorescence cameras is in preparation for a launch in Spring 2023 in the path of K-EUSO and POEMMA missions. SIN P MSU develops a digital data processing system for the flourescent telesc ope photodetecting modules.\n\nhttps://indico.nevod.mephi.ru/event/6/contr ibutions/157/ LOCATION:Online Zoom URL:https://indico.nevod.mephi.ru/event/6/contributions/157/ END:VEVENT BEGIN:VEVENT SUMMARY:Generation of cosmic rays of high energy DTSTART;VALUE=DATE-TIME:20210610T135500Z DTEND;VALUE=DATE-TIME:20210610T141000Z DTSTAMP;VALUE=DATE-TIME:20260415T000513Z UID:indico-contribution-6-150@indico.nevod.mephi.ru DESCRIPTION:Speakers: Konstantin Belotsky (National Research Nuclear Unive rsity MEPhI (Moscow Engineering Physics Institute))\nReport will review an d discuss possible mechanisms of generation of high and ultra high energy cosmic rays and gamma radiation.\n\nhttps://indico.nevod.mephi.ru/event/6/ contributions/150/ LOCATION:Online Zoom URL:https://indico.nevod.mephi.ru/event/6/contributions/150/ END:VEVENT BEGIN:VEVENT SUMMARY:An overview of high-energy diffuse gamma-ray emission measured by Fermi LAT and H.E.S.S. DTSTART;VALUE=DATE-TIME:20210609T103500Z DTEND;VALUE=DATE-TIME:20210609T105000Z DTSTAMP;VALUE=DATE-TIME:20260415T000513Z UID:indico-contribution-6-185@indico.nevod.mephi.ru DESCRIPTION:Speakers: Dmitry Malyshev (Erlangen Center for Astroparticle P hysics)\nI will give a short overview of high energy diffuse gamma-ray emi ssion measured by the Fermi LAT and H.E.S.S. experiments. The talk will co nsist of two parts. In the first part I will talk about the diffuse emissi on itself\, what it can teach us about Galactic cosmic rays (CRs)\, the se arch for sources of PeV CRs\, populations of faint Galactic and extragalac tic sources. In the second part I will talk about the use of diffuse emiss ion measurements in setting limits on new physics\, such as dark matter an nihilation and evaporation of primordial black holes.\n\nhttps://indico.ne vod.mephi.ru/event/6/contributions/185/ LOCATION:Online Zoom URL:https://indico.nevod.mephi.ru/event/6/contributions/185/ END:VEVENT BEGIN:VEVENT SUMMARY:The TRASGO Program. Current status and first results DTSTART;VALUE=DATE-TIME:20210608T133500Z DTEND;VALUE=DATE-TIME:20210608T140000Z DTSTAMP;VALUE=DATE-TIME:20260415T000513Z UID:indico-contribution-6-137@indico.nevod.mephi.ru DESCRIPTION:Speakers: Damian Garcia-Castro (LABCAF - IGFAE / USC)\nResearc h in cosmic rays is of interest for many fields of science: from Astrophy sics and Solar Physics to the forecasting of magnetic storms or vulcanolo gy. For such purposes many detectors using different techniques have been designed and are operative all around the world. A common feature of most of the neutron and muon monitors used at the Earth's surface for the regul ar survey of the cosmic ray background is that they are constrained to the measurement of single particles. As a consequence they only provide integ ral fluxes above a given energy threshold.\n\nTRASGO is the acronym of “ TRAck reconStructinG bOx” and the name corresponds to a project aiming t he development of a set of high granularity tracking cosmic ray detectors sensitive to bundles of either muons or electrons and even of making a rou gh calorimetry of electrons. These features do allow a single ground based detector to measure cosmic ray background fluxes above different energy t hresholds and\, making use of the response function\, to survey the primar y cosmic ray flux in different energy ranges.\n\nActually\, two Trasgo det ectors are operative: TRAGALDABAS\, located in Santiago de Compostela and TRISTAN\, located in a Spanish Base in Antarctica. Two new detectors are b eing built as a part of the STRATOS project and will be installed at a dis tance of about 100 km far from TRAGALDABAS.\n\nIn this talk we will review the main features of the Trasgo detectors and some tools that are being d eveloped within the framework of the program. We will also present some re sults related with the muon/electron separation capability of TRAGALDABAS and two cosmic ray surveys at different geomagnetic latitudes performed by the TRISTAN detector between Vigo (Spain) and Punta Arenas (Chile) in 201 8 and 2019.\n\nhttps://indico.nevod.mephi.ru/event/6/contributions/137/ LOCATION:Online Zoom URL:https://indico.nevod.mephi.ru/event/6/contributions/137/ END:VEVENT BEGIN:VEVENT SUMMARY:Resent results from the Pierre Auger Collaboration DTSTART;VALUE=DATE-TIME:20210609T083500Z DTEND;VALUE=DATE-TIME:20210609T090000Z DTSTAMP;VALUE=DATE-TIME:20260415T000513Z UID:indico-contribution-6-184@indico.nevod.mephi.ru DESCRIPTION:Speakers: Thomas Bretz (University of Aachen)\nWith increased statistics\, the energy spectrum of cosmic rays reveals peculiar features at the highest energies that will be discussed in this contribution. In ad dition\, knowing the composition of cosmic rays is important to be able to understand the data. Our composition measurement\, as provided by the dep th of the shower maximum and fluctuations of this depth can be compared to measurements of the muon content of air showers\, revealing a discrepancy in those results. In this contribution both aspects will be discussed.\n\ nhttps://indico.nevod.mephi.ru/event/6/contributions/184/ LOCATION:Online Zoom URL:https://indico.nevod.mephi.ru/event/6/contributions/184/ END:VEVENT BEGIN:VEVENT SUMMARY:Results form the DAMPE space mission DTSTART;VALUE=DATE-TIME:20210610T122500Z DTEND;VALUE=DATE-TIME:20210610T125000Z DTSTAMP;VALUE=DATE-TIME:20260415T000513Z UID:indico-contribution-6-156@indico.nevod.mephi.ru DESCRIPTION:Speakers: Ivan De Mitri (Gran Sasso Science Institute (GSSI) a nd INFN-LNGS)\nThe DArk Matter Particle Explorer (DAMPE) is a satellite-bo rne\,\ncalorimetric type\, high-energy-resolution space cosmic ray and gam ma-ray detector.\nIt was launched in December 2015 and has been stably ope rated for more than five\nyears. Precise measurements of the all-electron\ , proton and Helium spectra in wide\nenergy ranges have been obtained\, sh edding new light on the research of cosmic ray\nphysics and dark matter pr operties. We will present and discuss the above results\ntogether with the ongoing work on data analysis for heavier nuclei.\n\nhttps://indico.nevod .mephi.ru/event/6/contributions/156/ LOCATION:Online Zoom URL:https://indico.nevod.mephi.ru/event/6/contributions/156/ END:VEVENT BEGIN:VEVENT SUMMARY:Implications of astrophysical neutrino detections for TeV-PeV gamm a-rays DTSTART;VALUE=DATE-TIME:20210610T105500Z DTEND;VALUE=DATE-TIME:20210610T111000Z DTSTAMP;VALUE=DATE-TIME:20260415T000513Z UID:indico-contribution-6-181@indico.nevod.mephi.ru DESCRIPTION:Speakers: Theo Glauch (Technical University of Munich)\nSince its first detection by the IceCube Neutrino Observatory in 2013\, the diff use flux of astrophysical neutrinos has been confirmed in several channels with increasing significance and precision. With a decade of IceCube data \, we have now gained a solid picture of the astrophysical neutrino flux f rom the TeV up to the PeV range. Another significant milestone was the ann ouncement of the first source of astrophysical neutrinos - the gamma-ray b right Blazar TXS 0506+056 in 2018. Although the origin of a large fraction of the astrophysical neutrino flux remains unknown\, it is expected that neutrinos and gamma rays are produced in close connection at nearly the sa me energies. In this talk\, I review the current searches that connect ast rophysical neutrinos to gamma rays from different source populations. Furt hermore\, I will cover physical and experimental challenges\, as well as t he role of current and future experiments.\n\nhttps://indico.nevod.mephi.r u/event/6/contributions/181/ LOCATION:Online Zoom URL:https://indico.nevod.mephi.ru/event/6/contributions/181/ END:VEVENT BEGIN:VEVENT SUMMARY:Searching for neutrino and ultra-high-energy gamma ray counterpart s of gamma-ray bursts and neutrinos on the GCN/TAN DTSTART;VALUE=DATE-TIME:20210610T102500Z DTEND;VALUE=DATE-TIME:20210610T104000Z DTSTAMP;VALUE=DATE-TIME:20260415T000513Z UID:indico-contribution-6-183@indico.nevod.mephi.ru DESCRIPTION:Speakers: Islam Unatlokov (BNO INR RAS)\nThe Baksan Neutrino O bservatory setups are currently performing search for neutrino and ultra-h igh-energy gamma ray counterparts of gamma-ray bursts and neutrinos on the GCN/TAN. GCN/TAN (The Gamma-ray Coordinates Network\, Transient Astronomy Network) is a system for distributing alerts from gamma-ray bursts\, tran sients. Muon neutrinos and antineutrinos with energies above 1 GeV are re gistered with the Baksan Underground Scintillation Telescope. Ultra-high-e nergy gamma rays are registered with the «Carpet-2» setup. Registration of events and analysis of alerts occurs in real time. Alerts from Swift B AT\, Fermi GBM\, LAT\, INTEGRAL\, IceCube\, HAWC are used. This work prese nts the description of the alert processing program and preliminary result s.\n\nhttps://indico.nevod.mephi.ru/event/6/contributions/183/ LOCATION:Online Zoom URL:https://indico.nevod.mephi.ru/event/6/contributions/183/ END:VEVENT BEGIN:VEVENT SUMMARY:Hints at axion-like particles from TeV astrophysics DTSTART;VALUE=DATE-TIME:20210610T101000Z DTEND;VALUE=DATE-TIME:20210610T102500Z DTSTAMP;VALUE=DATE-TIME:20260415T000513Z UID:indico-contribution-6-178@indico.nevod.mephi.ru DESCRIPTION:Speakers: Marco Roncadelli (Italian Institute of Nuclear Physi cs INFN - Sezionne di Pavia -- Italy)\nAxion-like particles (ALPs) are a g eneric prediction of many extensions of the \nStandard Model. They are ver y light pseudo-scalar bosons which mainly couple \nto two photons. In the presence of an external field\, photon-ALP oscillations \ntake place. They play a leading role in very-high-energy (VHE) astrophysics. \nThe aim of my talk is to report on two hints at ALPs. One comes from the fact \nthat conventional physics prevents Flat Spectrum Radio Quasars (FSRQs) to \nemi t above about 30 GeV — barring ad hoc proposals -- because of the existe nce \nof the broad line region (BLR). But MAGIC has detected them up to 40 0 GeV. I \nshow that photon-ALP oscillations in the jet magnetic field\, i nside standard \nemission models\, allows VHE photons to overcome the BLR and be emitted with \nthe observed SED. As a case study we have taken PKS 1222+2167. A second \nhint comes from the analysis of the largest sample o f IBL and HBL BL Lacs out \nto z = 0.6. After EBL de-absorption\, we have found that the best-fit to the emitted \nspectral indices is a parabola as a function of z\, thereby implying that they are \nstatistically correlat ed\, a fact that looks mysterious. Putting ALPs into the game \nand redoin g the same analysis\, the above best-fit becomes a straight line with \nz = constant\, Hence the previous correlation disappears\, in agreement with \nphysical intuition.\n\nhttps://indico.nevod.mephi.ru/event/6/contributi ons/178/ LOCATION:Online Zoom URL:https://indico.nevod.mephi.ru/event/6/contributions/178/ END:VEVENT BEGIN:VEVENT SUMMARY:GAMMA-400 gamma-ray observations in GeV and TeV energy range DTSTART;VALUE=DATE-TIME:20210610T095500Z DTEND;VALUE=DATE-TIME:20210610T101000Z DTSTAMP;VALUE=DATE-TIME:20260415T000513Z UID:indico-contribution-6-177@indico.nevod.mephi.ru DESCRIPTION:Speakers: Nikolay Topchiev (LPI RAS)\nFuture space-based GAMMA -400 gamma-ray telescope will operate aboard Russian astrophysical observa tory in the highly elliptic orbit during 7 years. Observing gamma-ray sour ces from Galactic plane\, gamma-ray bursts\, emission from diffuse gamma r ays\, the Sun\, dark matter particles will be performed uninterruptedly fo r a long time (~100 days) in point-source mode in contrast to scanning mod e for Fermi-LAT and other space- and ground-based instruments. GAMMA-400 w ill measure gamma rays in the energy range from ~20 MeV to several TeV\, h ave the unprecedented angular (~0.01° at Eγ = 100 GeV) and energy (~2% a t Eγ = 100 GeV) resolutions better than the Fermi-LAT\, as well as ground gamma-ray telescopes\, by a factor of 5-10\, and perfectly separate gamma rays from cosmic-ray background.\n\nhttps://indico.nevod.mephi.ru/event/6 /contributions/177/ LOCATION:Online Zoom URL:https://indico.nevod.mephi.ru/event/6/contributions/177/ END:VEVENT BEGIN:VEVENT SUMMARY:Search for astrophysical nanosecond optical transients with TAIGA- HiSCORE array DTSTART;VALUE=DATE-TIME:20210610T094000Z DTEND;VALUE=DATE-TIME:20210610T095500Z DTSTAMP;VALUE=DATE-TIME:20260415T000513Z UID:indico-contribution-6-176@indico.nevod.mephi.ru DESCRIPTION:Speakers: Alexander Panov (SINP MSU)\nA wide-angle Cerenkov ar ray TAIGA-HiSCORE (FOV ~0.6 ster)\, was originally created as a part of TA IGA installation for high -energy gamma-ray astronomy and cosmic ray physi cs. Array now consist on nearly 100 optical stations on the area of 1 km$^ 2$. Due to high accuracy and stability (~1 ns) of time synchronization of the optical stations the accuracy of EAS arrival direction reconstructio n is reached 0.1º. It was proven that the array can also be used to sear ch for nanosecond astrophysical transients of the optical range. The repor t discusses the method of searching for astrophysical transients using the HiSCORE array and demonstrates its performance on a real example of detec ting signals from an artificial Earth satellite. The search for optical tr ansients in the HiSCORE data of the winter season 2018-2019 is carried out . One candidate for repeated transients has been detected\, but the estima ted probability of random simulation of such a transient by background EAS events is not less than 10%\, which does not allow us to say that the det ected candidate corresponds to a real astrophysical transient. An upper bo und on the event frequency of optical transients with an optical quantum f lux density of more than $1.5\\times10^{–4}$ erg/sec/cm$^2$ and a durati on of more than 5 ns is established as $\\sim~2\\times10^{–3}$ events/sr /hour.\n\nhttps://indico.nevod.mephi.ru/event/6/contributions/176/ LOCATION:Online Zoom URL:https://indico.nevod.mephi.ru/event/6/contributions/176/ END:VEVENT BEGIN:VEVENT SUMMARY:The TAIGA Experiment Status and Results DTSTART;VALUE=DATE-TIME:20210610T091500Z DTEND;VALUE=DATE-TIME:20210610T094000Z DTSTAMP;VALUE=DATE-TIME:20260415T000513Z UID:indico-contribution-6-173@indico.nevod.mephi.ru DESCRIPTION:Speakers: Martin Tluczykont ()\nTAIGA (Tunka Advanced Instrume nt for Gamma-ray and cosmic ray Astrophysics) aims at covering the TeV to PeV energy range\, where the long-sought Pevatrons can be detected. To thi s end\, TAIGA is implementing a hybrid detection technique for Extensive A ir Showers (EAS) from the TeV to PeV energy range with good spectral resol ution. Currently the hybrid TAIGA detector combines two wide angle shower front Cherenkov light sampling timing arrays (HiSCORE and Tunka-133)\, tw o ~ 4m class\, ~10° aperture Imaging Air Cherenkov Telescopes (IACTs) and ~ 240 m² surface and underground charged particle detector stations. Ou r goal is to introduce a new hybrid reconstruction technique\, combining t he good angular and shower core resolution of HiSCORE with the gamma-hadro n separation power of the imaging telescopes. This approach allows to maxi mize the effective area and simultaneously to reach a good gamma-hadron se paration at low energies (few TeV). At higher energies\, muon detectors ar e planned to enhance gamma-hadron separation. During the commissioning ph ase of the first and second IACT\, several sources were observed. First de tections of known sources with the first telescope show the functionality of the TAIGA IACTs. Here\, the status of the TAIGA experiment will be pres ented\, along with first results from the current configuration.\n\nhttps: //indico.nevod.mephi.ru/event/6/contributions/173/ LOCATION:Online Zoom URL:https://indico.nevod.mephi.ru/event/6/contributions/173/ END:VEVENT BEGIN:VEVENT SUMMARY:Cosmic Rays and Supernova remnants: an observational challenge DTSTART;VALUE=DATE-TIME:20210609T101000Z DTEND;VALUE=DATE-TIME:20210609T103500Z DTSTAMP;VALUE=DATE-TIME:20260415T000513Z UID:indico-contribution-6-180@indico.nevod.mephi.ru DESCRIPTION:Speakers: Gerd Puehlhofer (University of Tuebingen)\nSupernova remnants are established sources of gamma-ray emission\, detected from sp ace and from ground. To establish this source class as accelerators of the bulk of Galactic cosmic rays has nevertheless proven to be challenging. I will review the observational status of ground-based observations and dis cuss their implications.\n\nhttps://indico.nevod.mephi.ru/event/6/contribu tions/180/ LOCATION:Online Zoom URL:https://indico.nevod.mephi.ru/event/6/contributions/180/ END:VEVENT BEGIN:VEVENT SUMMARY:Particle acceleration and radiation processes in supernova remnant s. DTSTART;VALUE=DATE-TIME:20210609T095500Z DTEND;VALUE=DATE-TIME:20210609T101000Z DTSTAMP;VALUE=DATE-TIME:20260415T000513Z UID:indico-contribution-6-179@indico.nevod.mephi.ru DESCRIPTION:Speakers: Vladimir Zirakashvili (Pushkov Institute of Terrestr ial Magnetism\, Ionosphere and Radiowave Propagation\, Moscow\, Russia)\nD iffusive shock acceleration and production of non-thermal emission in gala ctic supernova remnants is briefly reviewed. We describe gamma ray and X-r ay observational features of young and old remnants. The corresponding dis cussion of Galactic cosmic ray origin is given.\n\nhttps://indico.nevod.me phi.ru/event/6/contributions/179/ LOCATION:Online Zoom URL:https://indico.nevod.mephi.ru/event/6/contributions/179/ END:VEVENT BEGIN:VEVENT SUMMARY:The Carpet-3 EAS array for investigation of gamma-radiation with e nergy E > 100TeV DTSTART;VALUE=DATE-TIME:20210609T094000Z DTEND;VALUE=DATE-TIME:20210609T095500Z DTSTAMP;VALUE=DATE-TIME:20260415T000513Z UID:indico-contribution-6-175@indico.nevod.mephi.ru DESCRIPTION:Speakers: Aleksander Kudzhaev ()\nAbstract. The Carpet-3 exper iment for investigation of gamma-radiation with energy above 100 TeV is cu rrently being prepared at the Baksan Neutrino Observatory of the Institute for Nuclear Research\, Russian Academy of Sciences. At present the plasti c scintillation counters with a total continuous area of 410 m2 are instal led in the muon detector (MD) underground tunnel\, and they are totally eq uipped with electronics. The counters’ gains and thresholds have been ad justed. Fifteen modules of shower detectors are placed on the surface of t he MD absorber. Ten of them contain 9 standard plastic counters with an ar ea of 1 m2 each. Also 24 modules without counters are arranged on the terr itory of the array. These modules will accomplish a surface part of the Ca rpet-3 array. The preliminary estimates show that the new array will have the best sensitivity to the flux of primary gamma rays with energy in regi on 100TeV-1PeV.The increased area of the surface part of the array will al low one to have larger area of location of shower axes\, thereby increasin g the statistics of detected events and decreasing the energy threshold fo r primary cosmic radiation. The Carpet-3 experiment will start at the end of 2021.\n\nhttps://indico.nevod.mephi.ru/event/6/contributions/175/ LOCATION:Online Zoom URL:https://indico.nevod.mephi.ru/event/6/contributions/175/ END:VEVENT BEGIN:VEVENT SUMMARY:Status and first results of LHAASO DTSTART;VALUE=DATE-TIME:20210609T091500Z DTEND;VALUE=DATE-TIME:20210609T094000Z DTSTAMP;VALUE=DATE-TIME:20260415T000513Z UID:indico-contribution-6-174@indico.nevod.mephi.ru DESCRIPTION:Speakers: Yi Zhang (Purple Mountain Observatory\, CAS)\nThe or igin，acceleration and transport mechanisms of the cosmic rays are fundam ental but yet unresolved problems that have been the focus of astroparticl e physics researches. The Large High Altitude Air Shower Observatory (LHAA SO)\, which will be completed by the end of 2021\, is a new generation hyb rid experiment with the advantages of high sensitivity\, high duty cycle a nd large field of view. LHAASO consists of three detector arrays\, the Kil ometer Square Array (KM2A)\, the Water Cherenkov Detector Array (WCDA) and the Wide Field of-view Cherenkov Telescope Array (WFCTA)\, located at 441 0 m above sea level in Sichuan Province\, China. LHAASO serves as the most sensitive γ-ray detector for energies above a few tens of TeV\, and is e xpected to give revolutionary insights in the VHE domain of astroparticle physics\, such as the origin and propagation of CRs\, as well as the natur e of VHE γ-ray sources. In this paper\, we will report the status and fir st results of LHAASO.\n\nhttps://indico.nevod.mephi.ru/event/6/contributio ns/174/ LOCATION:Online Zoom URL:https://indico.nevod.mephi.ru/event/6/contributions/174/ END:VEVENT BEGIN:VEVENT SUMMARY:QGSJET-III model: novel features DTSTART;VALUE=DATE-TIME:20210609T135000Z DTEND;VALUE=DATE-TIME:20210609T140500Z DTSTAMP;VALUE=DATE-TIME:20260415T000513Z UID:indico-contribution-6-170@indico.nevod.mephi.ru DESCRIPTION:Speakers: Sergey Ostapchenko (SINP MSU)\nI discuss the physics content of the QGSJET-III model\,paying a particular attention to the tre atment of higher twist and color fluctuation effects. The consequences for the energy dependence of both interaction cross sections and particle pro duction will be analyzed. Further\, the implementation of the pion exchang e mechanism will be described\, concentrating on its relevance to the inte rpretation of the data of the LHCf experiment.\n\nhttps://indico.nevod.mep hi.ru/event/6/contributions/170/ LOCATION:Online Zoom URL:https://indico.nevod.mephi.ru/event/6/contributions/170/ END:VEVENT BEGIN:VEVENT SUMMARY:Recent ALICE results on antinuclei inelastic cross sections and th e implications for antinuclei fluxes near Earth DTSTART;VALUE=DATE-TIME:20210609T130000Z DTEND;VALUE=DATE-TIME:20210609T132500Z DTSTAMP;VALUE=DATE-TIME:20260415T000513Z UID:indico-contribution-6-168@indico.nevod.mephi.ru DESCRIPTION:Speakers: Ivan Vorobyev ()\nThe presence of antinuclei in cosm ic rays remains one of the most intriguing questions of modern physics\, w ith several ongoing or planned experiments looking for traces of antinucle i in space near Earth. An observation of antideuteron or antihelium nuclei in cosmic rays would most probably mean a breakthrough in searches for "n ew physics"\, as the antinuclei production from ordinary collisions betwee n cosmic rays and interstellar medium is expected to be very low\, especia lly in the low kinetic energy range. However\, to correctly interpret futu re results\, one needs to know as precisely as possible both the antinucle i production mechanism and their nuclear inelastic cross sections. The lat ter defines the probability that antinuclei produced in the Galaxy can rea ch the detectors near Earth. Unfortunately\, these inelastic cross section s are known very poorly from the experiment\, which hampers precise calcul ations of expected antinuclei fluxes.\n\nThe ALICE collaboration has recen tly performed several measurements of antideuteron and antihelium-3 inelas tic cross sections\, providing the first experimental information of this kind. The antideuteron inelastic cross sections have been measured for the first time in the low momentum range 0.3 < p < 4 GeV/c using collisions a t the LHC as a source of antideuterons and the material of ALICE experimen t as a target. The method has been later extended to antihelium-3 nuclei i n the momentum range of 0.85 < p < 10 GeV/c. The results are compared to t he parameterisations used in Geant4 toolkit\, and in the case of antiheliu m-3 a much steeper rise of the inelastic cross section is observed at low momentum.\n\nWe show how the measurement of antinuclei inelastic cross sec tion with ALICE provides one of the necessary constraints for the study of antinuclei in space. To this purpose\, the impact of ALICE results on the antinuclei fluxes near Earth has been studied using a state-of-the-art pr opagation model implemented in GALPROP framework. The fluxes of antihelium -3 nuclei near Earth have been calculated for typical dark matter scenario s and for collisions of cosmic rays with the interstellar medium. We show that in the case of antihelium-3 stemming from dark matter one loses aroun d half of the antinuclei due to annihilations in collisions with interstel lar gas. As for the background antihelium-3 flux\, this loss is strongly e nergy-dependent\, ranging from 75% at low energies down to around 10% at h igh energies.\n\nhttps://indico.nevod.mephi.ru/event/6/contributions/168/ LOCATION:Online Zoom URL:https://indico.nevod.mephi.ru/event/6/contributions/168/ END:VEVENT BEGIN:VEVENT SUMMARY:Recent developments on EPOS DTSTART;VALUE=DATE-TIME:20210609T140500Z DTEND;VALUE=DATE-TIME:20210609T142000Z DTSTAMP;VALUE=DATE-TIME:20260415T000513Z UID:indico-contribution-6-172@indico.nevod.mephi.ru DESCRIPTION:Speakers: Klaus Werner ()\nCurrently\, EPOS-LHC is the public EPOS version\, heavily used by experimental groups in high energy and cosm ic ray physics. It is based on an S-matrix approach\, being the ideal fram ework for multiple scattering in small systems. However\, factorization an d binary scaling does not come for free\, it is a very complex issue\, and in the current model it is simply not properly done. Another topic concer ns flow\, which is only implemented as "parameterized" which quite limited application. There was substantial progress during the past few year\, re ferred to as "EPOS4 project"\, to develop a consistent formalism\, which a ccommodates a multiple scattering S-matrix approach\, factorization\, and saturation\, all of these topics being closely related to each other. In a ddition\, secondary interactions are considered\, most importantly a full hydrodynamic evolution. In this talk\, we will report about the status of the EPOS4 project.\n\nhttps://indico.nevod.mephi.ru/event/6/contributions/ 172/ LOCATION:Online Zoom URL:https://indico.nevod.mephi.ru/event/6/contributions/172/ END:VEVENT BEGIN:VEVENT SUMMARY:Inelastic diffraction at CMS DTSTART;VALUE=DATE-TIME:20210609T132500Z DTEND;VALUE=DATE-TIME:20210609T135000Z DTSTAMP;VALUE=DATE-TIME:20260415T000513Z UID:indico-contribution-6-169@indico.nevod.mephi.ru DESCRIPTION:Speakers: Lev Kheyn (SINP MSU)\nCMS measurements of inelastic diffraction are reviewed. Agreement of newly\nobtained results on diffract ion in pPb collisions in parallel with\npreviously obtained results on dif fraction in pp collisions with\ngenerators\, in particularly with cosmis r ay generators\, is discussed.\n\nhttps://indico.nevod.mephi.ru/event/6/con tributions/169/ LOCATION:Online Zoom URL:https://indico.nevod.mephi.ru/event/6/contributions/169/ END:VEVENT BEGIN:VEVENT SUMMARY:Comparison of models of nucleus-nucleus interactions implemented i n CORSIKA DTSTART;VALUE=DATE-TIME:20210609T142000Z DTEND;VALUE=DATE-TIME:20210609T143500Z DTSTAMP;VALUE=DATE-TIME:20260415T000513Z UID:indico-contribution-6-171@indico.nevod.mephi.ru DESCRIPTION:Speakers: Roman Nikolaenko ()\nProgram CORSIKA is the unique a nd the most common tool for Monte-Carlo simulation of the formation and de velopment of extensive air showers. CORSIKA offers the user a set of hadro nic interactions models for both high and low energies\, leaving the choic e of the model to the user. Thus the comparison of these models is of part icular interest.\n\nIn the work\, four CORSIKA models for high energy hadr onic interactions are considered: EPOS-LHC\, QGSJET-II\, SIBYLL and DPMJET . These models are used to describe the interactions of protons and nuclei of helium\, nitrogen and iron of primary cosmic rays with nuclei of atmos pheric nitrogen. Checking for laws of energy\, momentum and electric charg e conservation is of primary importance. The comparison of distributions o f the number of secondary particles and the fraction of the collision ener gy they are carrying\, as well as mean values of these quantities has been performed\n\nhttps://indico.nevod.mephi.ru/event/6/contributions/171/ LOCATION:Online Zoom URL:https://indico.nevod.mephi.ru/event/6/contributions/171/ END:VEVENT BEGIN:VEVENT SUMMARY:Recent Results of Cosmic Ray Measurements from the IceCube Neutrin o Observatory DTSTART;VALUE=DATE-TIME:20210610T141000Z DTEND;VALUE=DATE-TIME:20210610T143500Z DTSTAMP;VALUE=DATE-TIME:20260415T000513Z UID:indico-contribution-6-154@indico.nevod.mephi.ru DESCRIPTION:Speakers: Dennis Soldin (University of Delaware)\nThe IceCube Neutrino Observatory is a cubic-kilometer Cherenkov detector in the deep i ce at the geographic South Pole\, accompanied by a surface detector array\ , IceTop. The dominant event yield in the deep ice detector consists of pe netrating atmospheric muons with energies above several 100GeV\, produced in extensive air showers. In addition\, IceTop measures low-energy muons a round 1 GeV at the surface and the electromagnetic signal of the air showe r. This hybrid detector setup provides unique opportunities to study cosmi c rays with unprecedented statistics in great detail.\n\nWe will present t he latest results of comic ray measurements from the IceCube Neutrino Obse rvatory\, including the energy spectrum from 250 TeV up to the EeV range a nd the mass composition above 3 PeV. We will also report a measurement of the density of muons in the GeV range with IceTop and discuss its consiste ncy with predictions from recent hadronic interaction models. Finally\, we will present results of a combined measurement of the cosmic ray anisotro py using data from the IceCube and HAWC observatories.\n\nhttps://indico.n evod.mephi.ru/event/6/contributions/154/ LOCATION:Online Zoom URL:https://indico.nevod.mephi.ru/event/6/contributions/154/ END:VEVENT BEGIN:VEVENT SUMMARY:Orbital High Energy Cosmic Rays Observatory - stages of developme nt DTSTART;VALUE=DATE-TIME:20210610T134000Z DTEND;VALUE=DATE-TIME:20210610T135500Z DTSTAMP;VALUE=DATE-TIME:20260415T000513Z UID:indico-contribution-6-155@indico.nevod.mephi.ru DESCRIPTION:Speakers: Dmitry Podorozhny (M.V.Lomonosov Moscow State Univer sity\, Skobeltsyn Institute of Nuclear PhysicsM.V.Lomonosov Moscow State U niversity\, Skobeltsyn Institute of Nuclear Physics)\nCurrent status and p reliminary design of the High-Energy Ray Observatory (HERO) are presented. The HERO is planned to be launched onboard a heavy satellite. This experi ment is based on the application of a deep and wide aperture ionization ca lorimeter with mass from 10 to 70 tonns. The effective geometrical factor of the observatory varies from 12 to 62 m2sr respectively\, depending on t he mass of the calorimeter. Under the 5-7 years exposure\, this mission wi ll allow to measure the cosmic ray composition and energy spectra of nucle i around the knee and up to 10^17 eV with high precision and to solve the most actual problems of high energy astrophysics. Stages of development ar e presented\; details of technical realization are discussed.\n\nhttps://i ndico.nevod.mephi.ru/event/6/contributions/155/ LOCATION:Online Zoom URL:https://indico.nevod.mephi.ru/event/6/contributions/155/ END:VEVENT BEGIN:VEVENT SUMMARY:The main results of the PAMELA space mission in cosmic ray measure ments and its current status DTSTART;VALUE=DATE-TIME:20210610T131500Z DTEND;VALUE=DATE-TIME:20210610T134000Z DTSTAMP;VALUE=DATE-TIME:20260415T000513Z UID:indico-contribution-6-151@indico.nevod.mephi.ru DESCRIPTION:Speakers: Andrey Mayorov (National Research Nuclear University MEPhI (Moscow Engineering Physics Institute))\nAs of today\, the PAMELA e xperiment is widely known amongst the researchers specializing is the phys ics of cosmic rays. Application of obtained scientific results ranges from hypothetical dark matter particles\, to galactic objects and properties o f interstellar medium\, solar and solar-terrestrial physics\, as well as p hysics of near-Earth space. Despite the end of the flight stage of the exp eriment in 2016\, large amounts of unique data are still being processed a nd analyzed today. In this talk we present an overview of the already obta ined results\, discuss their impact on the cosmic ray physics and adjacent fields of study\, and describe the status of the ongoing research\, that still holds the importance to both the fundamental and applied physics. We also propose some in-development theoretical models\, which are partly ba sed on the obtained experimental results.\n\nhttps://indico.nevod.mephi.ru /event/6/contributions/151/ LOCATION:Online Zoom URL:https://indico.nevod.mephi.ru/event/6/contributions/151/ END:VEVENT BEGIN:VEVENT SUMMARY:Cosmic Ray Nuclei: Results from AMS-02 DTSTART;VALUE=DATE-TIME:20210610T125000Z DTEND;VALUE=DATE-TIME:20210610T131500Z DTSTAMP;VALUE=DATE-TIME:20260415T000513Z UID:indico-contribution-6-152@indico.nevod.mephi.ru DESCRIPTION:Speakers: Federico Donnini (INFN Sez. Perugia)\nAMS is a multi -purpose high energy particle detector designed to perform high precision direct cosmic ray measurements onboard of the International Space Station. AMS can measure and identify cosmic ray nuclei with unprecedented precisi on and\, thanks to its large acceptance and the long exposure time\, it is able to provide precision studies of cosmic ray nuclei in the GV-TV regio n. In 10 years of operation\, AMS has collected more than 170 billion cosm ic rays triggers. In this contribution\, the precision measurement of prim ary and secondary cosmic rays fluxes from protons to Silicon (Z=14)\, and the primary Iron flux (Z=26)\, in the rigidity range from 2 GV up to 3 TV is presented. These measurements are based on the data collected by AMS fr om May 2011 to May 2018\n\nhttps://indico.nevod.mephi.ru/event/6/contribut ions/152/ LOCATION:Online Zoom URL:https://indico.nevod.mephi.ru/event/6/contributions/152/ END:VEVENT BEGIN:VEVENT SUMMARY:CALET observations during the first 5 years on the ISS DTSTART;VALUE=DATE-TIME:20210610T120000Z DTEND;VALUE=DATE-TIME:20210610T122500Z DTSTAMP;VALUE=DATE-TIME:20260415T000513Z UID:indico-contribution-6-153@indico.nevod.mephi.ru DESCRIPTION:Speakers: Pier Simone Marrocchesi (University of Siena and INF N Pisa)\nThe CALorimetric Electron Telescope CALET is collecting science d ata on the International Space Station since October 2015 with excellent a nd continuous performance.\nEnergy is measured with a deep homogeneous cal orimeter (1.2 nuclear interaction lengths\, 27 radiation lengths) preceded by an imaging pre- shower (3 radiation lengths\, 1mm granularity) providi ng tracking and $10^{-5}$ electron/proton discrimination. Two independent sub-systems identify the charge Z of the incident particle from proton to iron and above (Z<40). CALET measures the cosmic-ray electron+positron flu x up to 20 TeV\, gamma rays up to 10 TeV\, and nuclei up to 1 PeV.\nIn thi s paper\, we report the on-orbit performance of the instrument and summari ze the main results obtained during the first 5 years of operation\, inclu ding the electron+positron energy spectrum and the individual spectra of p rotons\, heavier nuclei and iron. Solar modulation and gamma- ray observat ions are also concisely reported\, as well as transient phenomena and the search for gravitational wave counterparts.\n\nhttps://indico.nevod.mephi. ru/event/6/contributions/153/ LOCATION:Online Zoom URL:https://indico.nevod.mephi.ru/event/6/contributions/153/ END:VEVENT BEGIN:VEVENT SUMMARY:Non-classical diffusion of the cosmic rays in the Galaxy: Energy s pectra of primary nuclei DTSTART;VALUE=DATE-TIME:20210609T080500Z DTEND;VALUE=DATE-TIME:20210609T082000Z DTSTAMP;VALUE=DATE-TIME:20260415T000513Z UID:indico-contribution-6-149@indico.nevod.mephi.ru DESCRIPTION:Speakers: Anatoly Lagutin (Altai State University)\nIn the las t decade\, measurements of the cosmic ray (CR) nuclei in the GV–TV rigid ity region by new-generation balloon-borne and satellite instruments allow ed to establish new features in CR spectra. It was found that both spectra of most abundant primary CR nuclei and the secondary cosmic rays at rigid ity $R > 100−200$ GV exhibit a hardening with increasing rigidity. Thus they deviate from a single power law.\n\nThese newly discovered features a re not easy to explain under standard scenario of cosmic ray origin\, acce leration and propagation in the Galaxy. Under the standard theory\, the pr imary nuclei are thought to be produced\, up to at least several PV\, by s upernova remnant shock waves by diffusive shock acceleration mechanism tha t predicts power-law spectra $J \\propto R^{−\\gamma}$ with slope $\\gam ma ≈ 2.0 − 2.2$. The subsequent CR transport in the turbulent Galactic magnetic fields is modeled as a diffusion process in quasi-homogeneous me dium with the diffusion coefficient $D(R) = D_0 (R/1$ GV$)^\\delta$\, with $\\delta \\approx (0.3 − 0.8)$. Under these assumptions\, the spectrum of primary nucleus $i$ generated by the global-scale steady state distrib ution of sources $S(r\,R)$ is described by a single power law with index $ \\eta = \\gamma + \\delta$\, which is clearly at odds with the observed ha rdening of CR hadrons at GV–TV region.\n\nHowever\, theory and observati ons show that the ISM is inhomogeneous (fractal-like) at the scale of hund reds of parsecs. Stars formation regions also demonstrate fractal features with spatial scales up to about a kpc. Since the particles emitted by Gal actic sources en route to the Solar system pass through regions of the Gal axy that have different properties\, in such a inhomogeneous ISM\, the nor mal diffusion model is certainly not kept valid.\n\nThe non-homogeneous ch aracter of matter distribution and associated spatially intermittent magne tic field leads to the need to incorporate these ISM features into the cos mic ray diffusion model. A possible way to generalize the normal diffusion model is to replace the assumption about statistical homogeneity of inhom ogeneities distribution by their fractal distribution. Non-classical diffu sion is manifested\, in particular\, by abnormally large free paths of pa rticles (so-called “Lévy flights”) and a long stay of particles in in homogeneities\, leading to a presence of the so-called “Lévy traps”.\ n\nIn the current study\, we demonstrate that non-classical diffusion mode l of the cosmic rays in the inhomogeneous Galaxy\, developed by the author s\, allows to describe the main features of nuclei spectra observed in the Solar system. Particularly\, in this model the key feature of the all par ticle energy spectrum — the knee at 3$\\cdot10^{15}$ eV — appears natu rally without additional assumptions. The observed changes in the slope of energy spectra of primary nuclei at rigidity $R > 100−200$ GV caused by the transition from the contribution of multiple distant Galactic sources to the contribution of mainly local ones.\n\nhttps://indico.nevod.mephi.r u/event/6/contributions/149/ LOCATION:Online Zoom URL:https://indico.nevod.mephi.ru/event/6/contributions/149/ END:VEVENT BEGIN:VEVENT SUMMARY:About cosmic ray sources in Galaxy DTSTART;VALUE=DATE-TIME:20210609T075000Z DTEND;VALUE=DATE-TIME:20210609T080500Z DTSTAMP;VALUE=DATE-TIME:20260415T000513Z UID:indico-contribution-6-148@indico.nevod.mephi.ru DESCRIPTION:Speakers: Yuri Stozhkov (LPI RAS)\nIn the last two decades the new expeimental data on cosmic rays about energy spectra in a wide energy range up to 10^13 eV\, isotropy\, ratio of positron flux to electron one\ , and others were obtained. These data came from balloons and mainly from satellites. It is difficult to understand and to explain these experiment al data within a generally accepted framework of cosmic ray sources\, name ly\, that supernova explosions are the main sources of cosmic rays in Gala xy. \nWe consider the question that with the high probability the active r ed dwarfs could be cosmic ray sources up to energy of 10^14-10^15 eV.\n\n https://indico.nevod.mephi.ru/event/6/contributions/148/ LOCATION:Online Zoom URL:https://indico.nevod.mephi.ru/event/6/contributions/148/ END:VEVENT BEGIN:VEVENT SUMMARY:Cosmic Ray Mass Composition Problem: towards model-independent eva luation based on the analysis of the spatial and temporal structure of EAS charged components DTSTART;VALUE=DATE-TIME:20210609T072500Z DTEND;VALUE=DATE-TIME:20210609T075000Z DTSTAMP;VALUE=DATE-TIME:20260415T000513Z UID:indico-contribution-6-147@indico.nevod.mephi.ru DESCRIPTION:Speakers: Roman Raikin (Altai State Univesrity)\nThe determina tion of the mass composition of primary cosmic rays is at present stage th e crucial issue for understanding their origin and propagation through the interstellar medium. The mass composition above $10^{14}$ eV is inferred from the extensive air shower (EAS) observations by comparisons with simul ations results\, which rely on accurate description of air shower physics including hadronic interaction models uncertain in the relevant energy ran ge. Numerous methods and techniques are implemented\, including analysis o f mean values\, fluctuations\, correlations or even particular features of distributions of different observables characterized both longitudinal an d spatial shower development (depth of maximum\, muon production depth\, t otal number of electrons and muons at the observation level and their loca l densities at various distances from the shower axis\, particles arrival time profiles\, spatial distributions of radio emission and Cherenkov ligh t etc.). Large efforts have been made recently in both gaining experimenta l data with increased resolution in detection of various EAS components an d developing improved methods for physical interpretation of the data alon g with evolving hadronic interaction models after the LHC results. Neverth eless\, the composition results still remain ambiguous in the entire energ y range available for EAS studies.\n\nThe discrepancies between estimates of mass composition derived by various methods from the data of different experiments\, in addition to insufficiency in statistics\, are apparently caused by complex of instrumental and methodological systematic biases of different nature\, as well as by strong model dependence of the observable s\, mostly in case of muon component characteristics (so-called “Muon Pu zzle”)\, disadvantages in taking into account meteorological effects etc .\n\nA possible solution might be achieved with refined (multi-)hybrid mea surements together with generalizations of the analysis by revealing unive rsal features\, based on the intrinsic physic properties of air showers\, evaluation of new parameters and functionals\, which are weakly sensitive to the hadronic interaction model being good primary mass indicators.\n\nI n this paper we present the updated analysis of spatial distributions of e lectrons and muons with respect to the scale invariance in lateral distrib ution (LD) functions (the extended scaling formalism). We demonstrate that this formalism enables accurate description of lateral distributions of e lectrons and muons by one-parametric scale-invariant functions in wide pri mary energy and radial distance ranges. The scale-invariance of LD and air shower universality manifesting through the functional dependence between radial scale factors and longitudinal shower age are both insensitive to hadronic interaction models. An additional composition sensitive observabl e\, which can be included in the multicomponent analysis of experimental d ata obtained by 100% duty cycle ground-based detectors\, is time profile o f charged particles measured by surface scintillation counters at differen t ranges of radial distances.\n\nThus\, integrated spatial and temporal ch aracteristics of the charged EAS component can be effectively used as a so urce of the improved cosmic ray mass composition results when interpreting the experimental data of the ground-based EAS arrays. The proposed approa ch could be implemented for the present and future (multi-)hybrid air show er observations by TAIGA\, Yakutsk Complex Air Shower Array\, Auger and Te lescope Array observatories taking into account their upcoming upgrades\, as well as for re-analysis and cross-calibration of the data collected fro m different air shower arrays within the single method in a broad primary energy range.\n\nhttps://indico.nevod.mephi.ru/event/6/contributions/147/ LOCATION:Online Zoom URL:https://indico.nevod.mephi.ru/event/6/contributions/147/ END:VEVENT BEGIN:VEVENT SUMMARY:Cosmic ray study at the Astrophysical Complex TAIGA: results and p lans DTSTART;VALUE=DATE-TIME:20210609T070000Z DTEND;VALUE=DATE-TIME:20210609T072500Z DTSTAMP;VALUE=DATE-TIME:20260415T000513Z UID:indico-contribution-6-146@indico.nevod.mephi.ru DESCRIPTION:Speakers: Leonid Kuzmichev (SINP MSU)\nTAIGA (Tunka Advanced I nstrument for cosmic ray physics and Gamma Astronomy) Astrophysical comple x is being developed for studies of gamma rays and charged cosmic rays in the energy range of 10^13 - 10^18 eV. The complex is located in the Tunka Valley\, about 50 km from Lake Baikal. In this report we present the exper iment status and plans for study of high-energy cosmic-ray physics as well as main results reached by wide-angle TAIGA-HiSCORE and Tunka-133 Cherenk ov arrays of the Astrophysical complex. Plans to study cosmic rays with ot her arrays of the complex namely scintillation array Tunka-Grande and new TAIGA-muons array and system of IACT telescopes are discussed too.\n\nhttp s://indico.nevod.mephi.ru/event/6/contributions/146/ LOCATION:Online Zoom URL:https://indico.nevod.mephi.ru/event/6/contributions/146/ END:VEVENT BEGIN:VEVENT SUMMARY:Temperature effect of muons in the atmosphere and diagnostics of t he thermobaric regime of the atmosphere using cosmic rays DTSTART;VALUE=DATE-TIME:20210610T083500Z DTEND;VALUE=DATE-TIME:20210610T090000Z DTSTAMP;VALUE=DATE-TIME:20260415T000513Z UID:indico-contribution-6-144@indico.nevod.mephi.ru DESCRIPTION:Speakers: Vasiliy Kuzmenko ()\nVariations in the intensity of cosmic rays observed in the depth of the atmosphere include the atmospheri c component of the variations. Muon telescopes of cosmic rays\, along with the barometric effect\, have a significant temperature effect due to the instability of the detected particles. These variations\, caused by change s in atmospheric temperature\, are superimposed on continuous observations of muon telescopes. Therefore\, their exclusion is extremely necessary\, especially in the data of modern muon telescopes\, the statistical accurac y of which is very high. The contributions of different layers of the atmo sphere to the total temperature effect for muons are not the same. This co ntribution is characterized by the distribution of the density of temperat ure coefficients for muons in the atmosphere. To correctly take into accou nt the temperature effect in the data of muon telescopes\, it is necessary to know the distribution of the density of temperature coefficients for m uons in the atmosphere and data on the altitude profile of the atmospheric temperature. Temperature coefficients have been found by now using calcul ations that contain a number of assumptions and do not take into account m any geometric and design features of telescopes. The availability of upper -air sounding data is limited. The estimation of the meteorological coeffi cients of the intensity of muons recorded in the depth of the atmosphere w as carried out according to the data of long-term continuous observations using various methods of factor analysis: correlation-regression analysis and the method of principal components. The temperature component of varia tions in the intensity of muons was found using spectrographic analysis of data from a complex of observations of the nuclear-active\, common ionizi ng and muon components of cosmic rays. The results obtained from the exper imental data are compared with the results of theoretical calculations. Ba sed on the data of the multichannel complex in Novosibirsk\, which provide s registration of the nuclear-active\, common ionizing and muon components \, temperature variations at various isobaric levels of the atmosphere ove r a long period have been found. The results obtained are compared with th e data of aerological sounding. As a result\, there is no need for aerolog ical sounding data for muon telescopes. In the near future\, it is planned to solve a similar problem for the Yakut cosmic ray spectrograph. Thus\, cosmic ray stations with muon telescopes can also provide information on t he temperature regime of the atmosphere.\n\nhttps://indico.nevod.mephi.ru/ event/6/contributions/144/ LOCATION:Online Zoom URL:https://indico.nevod.mephi.ru/event/6/contributions/144/ END:VEVENT BEGIN:VEVENT SUMMARY:Application of digital processing of muonogram time series to the analysis of extreme events in the heliosphere DTSTART;VALUE=DATE-TIME:20210610T082000Z DTEND;VALUE=DATE-TIME:20210610T083500Z DTSTAMP;VALUE=DATE-TIME:20260415T000513Z UID:indico-contribution-6-145@indico.nevod.mephi.ru DESCRIPTION:Speakers: Viktor Getmanov (The Geophysical Center of the RAS)\ nExtreme events in the heliosphere that lead to anomalous muon flux variat ions\, registered by the URAGAN muon hodoscope (MH)\, developed by MEPhI\, are analyzed. MH measures two-dimensional muon flux intensity distributio n functions (MFIDF) for a system of solid angles with a predefined samplin g step\, that are concatenated into matrix data time series of muonograms – the MFIDF outpur data from the MH. It can be assumed that the correspo nding input MFIDF time series fall on the MH detectors. Assuming the MH li nearity\, input and output MFIDF are related by the hardware function (HF) . \nOccurrence of extreme events leads to occurrence of spatial and tempo ral MFIDF anomalousness in muonograms. Here\, the task of development of t he necessary mathematical tools for solving the problems of the mentioned extreme events is formulated\, based on digital processing of muonogram ti me series. \n The methods and algorithms propose here are divided into tw o categories. The first (supplementary) category includes one- and two-dim ensional filtering algorithms for reducing temporal and spatial noises in muonograms\, including elimination of daily variations\, and the HF estima tion algorithms. The second (main) category comprises the variants of anom alousness - local anisotropy (LA) - recognition methods for input MFIDF b ased on time series of muonograms. \n To reduce noises in muonograms\, the algorithms have been developed for one-dimensional sequential and paralle l temporal and two-dimensional spatial filtering. A method has been develo ped for estimating the normalized HF for MH based on multiparameter models . The method has been tested on model and experimental muonograms. \nA me thod has been proposed for LA analysis by estimating normalized variations (1) of input MFIDF with respect to normalized HFs\, using spatial-tempora l filtering. The method has been tested on model and experimental muonogra ms. \nA method has been proposed for LA analysis by estimating normalized variations (2) of input MFIDF with respect to averaged output MFIDF\, usin g spatial-temporal filtering. The method has been tested on model and expe rimental muonograms. \nA method has been proposed for LA analysis in muono grams\, based on calculation of confidence intervals systems for estimates of mathematical expectations of muonograms on reference and current confi dence intervals. An algorithm is designed for LA analysis (recognition)\, based on decision making procedures. The algorithm has been tested on mode l and experimental muonograms. \nThe proposed digital processing is a math ematical toolkit\, the effectiveness of which for the analysis of extreme events in the heliosphere has been confirmed by testing. \nThis work was f unded by the Russian Science Foundation (project No. 17-17-01215).\n\nhttp s://indico.nevod.mephi.ru/event/6/contributions/145/ LOCATION:Online Zoom URL:https://indico.nevod.mephi.ru/event/6/contributions/145/ END:VEVENT BEGIN:VEVENT SUMMARY:Investigating thunderstorm activity in Moscow region via the metho d of muonography DTSTART;VALUE=DATE-TIME:20210610T080500Z DTEND;VALUE=DATE-TIME:20210610T082000Z DTSTAMP;VALUE=DATE-TIME:20260415T000513Z UID:indico-contribution-6-143@indico.nevod.mephi.ru DESCRIPTION:Speakers: Alexandra Kachur (National Research Nuclear Universi ty MEPhI (Moscow Engineering Physics Institute))\nThunderstorms\, being on e of the dangerous atmospheric phenomena\, are studied by means of various methods. Measurements of the muon flux variations using muon hodoscopes o ffer a tool for detection\, study and possible prediction of the thunderst orm activity. \n\nThe URAGAN muon hodoscope (MH)\, located in Moscow\, Rus sia\, allows simultaneous detection of muons from all directions of the up per hemisphere. Using its data\, muon imaging (muonography) method can be applied to visualize disturbed areas of the atmosphere\, and the muon coun ting rate and muon flux anisotropy can be acquired. Using these characteri stics\, 235 thunderstorm event candidates were identified during the sprin g and summer periods of 2014 – 2020. 211 (90 %) of the event candidates were accompanied by a thunderstorm cell detection via an independent metho d within a ± 6-hour interval. \n\nBy comparing muon snapshots (muonograph s) and meteorological maps obtained by the Doppler weather radar DMRL-С i t was shown that disturbed areas with decreased muon counting rate corresp ond to the regions of thunderstorm activity. It was established that the t hunderstorm events detected using muon hodoscope URAGAN data are mainly as sociated with thunderstorm cells that occurred in the time interval of ± 2.5 hours from the event.\n\nhttps://indico.nevod.mephi.ru/event/6/contrib utions/143/ LOCATION:Online Zoom URL:https://indico.nevod.mephi.ru/event/6/contributions/143/ END:VEVENT BEGIN:VEVENT SUMMARY:Muon tomography of large-scale objects DTSTART;VALUE=DATE-TIME:20210610T075000Z DTEND;VALUE=DATE-TIME:20210610T080500Z DTSTAMP;VALUE=DATE-TIME:20260415T000513Z UID:indico-contribution-6-142@indico.nevod.mephi.ru DESCRIPTION:Speakers: Igor Yashin (National Research Nuclear University ME PhI (Moscow Engineering Physics Institute))\nCosmic ray muons arriving fro m the upper hemisphere to the Earth's surface\, are currently used to deve lop methods of muonography (analogous to radiography) of the internal stru cture of large-scale objects and relief\, such as volcanoes\, blast furnac es\, nuclear reactors\, etc. The article discusses various aspects\, metho ds and specific examples of penetrating muonography\, in particular\, as a pplied to the study of the structure о nuclear reactors.\n\nhttps://indic o.nevod.mephi.ru/event/6/contributions/142/ LOCATION:Online Zoom URL:https://indico.nevod.mephi.ru/event/6/contributions/142/ END:VEVENT BEGIN:VEVENT SUMMARY:Muonography of large natural and industrial objects DTSTART;VALUE=DATE-TIME:20210610T072500Z DTEND;VALUE=DATE-TIME:20210610T075000Z DTSTAMP;VALUE=DATE-TIME:20260415T000513Z UID:indico-contribution-6-141@indico.nevod.mephi.ru DESCRIPTION:Speakers: Natalia Polukhina (LPI RAS)\, Zh.T. Sadykov ()\nThe fundamentals of the muonography method are presented\, and an overview of the main major experiments is presented. The results of modern muonograph ic studies in Russia\, carried out on the basis of this method with the us e of emulsion track detectors\, are presented.\n\nhttps://indico.nevod.mep hi.ru/event/6/contributions/141/ LOCATION:Online Zoom URL:https://indico.nevod.mephi.ru/event/6/contributions/141/ END:VEVENT BEGIN:VEVENT SUMMARY:Muonography method and the prospects of its further development DTSTART;VALUE=DATE-TIME:20210610T070000Z DTEND;VALUE=DATE-TIME:20210610T072500Z DTSTAMP;VALUE=DATE-TIME:20260415T000513Z UID:indico-contribution-6-140@indico.nevod.mephi.ru DESCRIPTION:Speakers: Natalia Barbashina (National Research Nuclear Univer sity MEPhI (Moscow Engineering Physics Institute))\nMuonography is an anal og of other concepts as x-ray graphy\, electronography\, neutronography et c. based on the registration of penetrating radiation\, the interaction of which with investigated objects causes some changes in the initial flux o f used particles. Unlike all other particles\, the fluxes of which are for med artificially\, muons are of natural origin\, because they are formed a s a result of the interactions of primary cosmic rays with the nuclei of a toms in the atmosphere. Since muons with a good accuracy preserve the dire ction of motion of primary particles\, this opens up the possibility of st udying by means of the muon flux of perturbations in the heliosphere and m agnetosphere of the Earth\, the perturbations in which lead to variations in the flux of primary cosmic rays. Disturbances in the atmosphere directl y affect the muon flux. The report considers examples of the use of muonog raphy for the study of various processes and phenomena in the heliosphere\ , magnetosphere and atmosphere\, as well as some results of the search for predictors of dangerous disturbances in these three regions. As a part of the further development of muonography\, the expediency of creating a net work of muon hodoscopes in the Russian Federation is considered to solve t he problem of early detection of dangerous processes and phenomena over it s territory.\n\nhttps://indico.nevod.mephi.ru/event/6/contributions/140/ LOCATION:Online Zoom URL:https://indico.nevod.mephi.ru/event/6/contributions/140/ END:VEVENT BEGIN:VEVENT SUMMARY:On the very local interstellar spectra for galactic Helium-isotope s\, deuteron\, positrons and antiprotons DTSTART;VALUE=DATE-TIME:20210609T123500Z DTEND;VALUE=DATE-TIME:20210609T125000Z DTSTAMP;VALUE=DATE-TIME:20260415T000513Z UID:indico-contribution-6-139@indico.nevod.mephi.ru DESCRIPTION:Speakers: Marius S Potgieter (IEAP\, CA University in Kiel)\nT he very local interstellar spectra (vLIS) for protons and total Helium (He )\, amongst other galactic cosmic rays (GCRs)\, were observed in situ by Voyager 1 below about 340 MeV/nuc since it had moved across the heliopaus e (HP). The latter is considered to be the boundary where the solar modula tion (GCRs) commences. Together with high precision PAMELA and AMS observa tions above 50 GeV at the Earth\, we reported previously on new vLIS calcu lated for protons\, total He\, other heavier isotopes and also for electro ns from 1 MeV to 100 GeV. We now follow up on this procedure to report on the vLIS detached for the isotopes He-4\, He-3\, and H-2. Combining comput ations done with the galactic propagation code\, GALPROP\, and our 3D modu lation model for GCRs in the heliosphere\, we have computed also vLIS’s for positrons and anti-protons. This is done assuming that the essential m odulation processes between the HP and the Earth for protons\, electrons\, He-isotopes\, H-2\, positrons and anti-protons are essentially similar\, except for particle drifts of oppositely charged particles. These new vLIS ’s will be shown\, discussed and evaluated within the context of the tot al modulation of these GCR particles in the heliosphere over a full solar activity cycle.\n\nhttps://indico.nevod.mephi.ru/event/6/contributions/139 / LOCATION:Online Zoom URL:https://indico.nevod.mephi.ru/event/6/contributions/139/ END:VEVENT BEGIN:VEVENT SUMMARY:Atmospheric effects of electron and muon components of cosmic rays : Sensitivity theory approach and data of operational satellite monitoring DTSTART;VALUE=DATE-TIME:20210609T122000Z DTEND;VALUE=DATE-TIME:20210609T123500Z DTSTAMP;VALUE=DATE-TIME:20260415T000513Z UID:indico-contribution-6-138@indico.nevod.mephi.ru DESCRIPTION:Speakers: Nikolay Volkov (Altai State University)\nThe results of a complex approach to the study of sensitivity of spatial distribution s of electron and muon components of extensive air showers (EAS)\, measure d by scintillation detectors\, to variations in the temperature profile of the atmosphere are presented.\nTo describe the lateral dependence of the spatial distribution function of electrons in electron-photon cascades\, t he method of the adjoint equations and also the variational theory of sens itivity developed by the authors were used. Spatial distributions of elect ron and muon components of EAS\, as well as the corresponding differential temperature coefficients\, were simulated by the Monte Carlo method.\nTo assess the effect of variations in the temperature profile of the atmosphe re on the lateral distribution of particles measured by scintillation dete ctors\, satellite monitoring of main parameters of the system "atmosphere - underlying surface" was carried out in zones of Yakutsk complex EAS arra y and TAIGA observatory.\nAs a result of the studies\, coefficients of dif ferential sensitivity of the spatial distribution of electron and muon EAS components to variations in the temperature profile of the atmosphere wer e obtained for the first time. Corrective functions that relate the energy release in scintillation detectors of various thicknesses with the partic les density above the detector at various distances from the shower axis w ere established.\nBased on the obtained data\, a method for correcting the EAS detectors readings in view of the temperature effect has been develop ed. It is shown that changes in the lateral distribution function of the E AS electromagnetic component due to variations in the atmospheric temperat ure profile in one annual cycle of operation can exceed 10%.\n\nhttps://in dico.nevod.mephi.ru/event/6/contributions/138/ LOCATION:Online Zoom URL:https://indico.nevod.mephi.ru/event/6/contributions/138/ END:VEVENT BEGIN:VEVENT SUMMARY:Variations of atmospheric muons and background measured with Large Volume Detector DTSTART;VALUE=DATE-TIME:20210609T120500Z DTEND;VALUE=DATE-TIME:20210609T122000Z DTSTAMP;VALUE=DATE-TIME:20260415T000513Z UID:indico-contribution-6-130@indico.nevod.mephi.ru DESCRIPTION:Speakers: Natalia Agafonova (Institute for Nuclear Research of RAS)\nThe analysis of atmospheric muons detected in the LVD underground l ow-background experiment (Gran Sasso\, Italy) has been completed. The aver age intensity of the registered muons is 3.31 × 10−4 m −2 s −1. The paper presents measurements of seasonal variations of muons in different directions.\nThe low-energy background\, which is registered by the detect or\, also experiences seasonal (annual) changes. This background is create d by gamma quanta from decays of 222Rn daughter nuclei. Gamma radiation is generated mainly by bismuth nuclei\, which\, due to-decay\, transform int o polonium with a characteristic time of 19.7 min. The energy spectrum of gamma radiation covers the range from 0.6 to 2.5 MeV. The detector also ob serves daily and weekly background variations. Variations are due to seaso nal fluctuations in radon concentration and additional injection of radon from groundwater associated with tectonic activity.\nWith deformations of the earth's crust\, stress arises\, the number of microcracks increases\, which leads to an increase in the concentration of radon. At the LVD exper iment\, research is underway to identify the relationship between the beha vior of radon fields and seismic activity. The paper will discuss various sources of variations associated with geophysical aspects (the influence o f the moon's motion\; changes in pressure\, humidity and temperature\; sei smic activity).\n\nhttps://indico.nevod.mephi.ru/event/6/contributions/130 / LOCATION:Online Zoom URL:https://indico.nevod.mephi.ru/event/6/contributions/130/ END:VEVENT BEGIN:VEVENT SUMMARY:Studies of heliospheric modulation of cosmic rays at ShICRA SB RAS and prospects of their further development DTSTART;VALUE=DATE-TIME:20210609T114000Z DTEND;VALUE=DATE-TIME:20210609T120500Z DTSTAMP;VALUE=DATE-TIME:20260415T000513Z UID:indico-contribution-6-136@indico.nevod.mephi.ru DESCRIPTION:Speakers: Petr Gololobov (Yu.G. Shafer Institute of Cosmophysi cal Research and Aeronomy SB RAS)\nThe ShICRA SB RAS has been conducting t heoretical and experimental studies of cosmic rays and their modulation in the heliosphere for over 60 years. The results of experimental studies of variations in the cosmic ray intensity include the creation of original m ethods for the primary processing of the registration data of neutron moni tors and muon telescopes\, in particular\, the methods of crossed telescop es\, receiving vectors\, and global survey\, which are currently used to s olve various fundamental and applied problems. In 1964\, an analysis of th e data obtained at the Yakutsk spectrograph was used to explain the nature of the observed daily variation in the cosmic ray intensity. A significan t contribution to the theoretical study of cosmic rays was the discovery o f the regular (diffusion) acceleration mechanism in 1977. Based on this me chanism\, a theory of cosmic ray acceleration in the solar corona in linea r and quasilinear versions was developed\, the observation of storm partic les at the interplanetary shock fronts was explained\, and the acceleratio n at the Earth's bow shock was described. Thus\, this mechanism explains t he origin of cosmic rays in the heliosphere in a wide energy range from 10 ^3 to 10^10 eV. Using the global survey method to predict geomagnetic stor ms in real-time\, the Institute maintains continuous ground-based monitori ng of cosmic rays. We study the tensor anisotropy of cosmic rays\, the nor th-south asymmetry of the heliosphere\, and the behavior of the energy spe ctrum of cosmic ray decrease in large-scale disturbances of the solar wind . A great achievement was creating a basic model of heliospheric modulatio n of cosmic rays\, which correctly describes the 11-year variations in the intensity of cosmic rays with energies from tens of MeV to tens of GeV ob served in various experiments.\nIn recent years\, we study cosmic ray decr ease in magnetic clouds. A new mechanism for the Forbush decrease formatio n in magnetic clouds is proposed. The Forbush decrease occurs due to energ y losses of particles in the inductive electric field of a moving cloud an d their quasi-trapping in the helical magnetic field. There are no free pa rameters in this theory\; the calculation results agree with observations. \nThe registration of cosmic rays will be continued on the new Yakutsk spe ctrograph. The analysis of its data will allow us to determine the cosmic ray anisotropy parameters\, isolate the effects of the east-west asymmetry \, and study the energy spectra of Forbush decreases in detail ground-leve l enhancements of solar cosmic rays. In future theoretical studies\, it is planned to consider several topical issues of space physics\, in particul ar\, the injection of solar cosmic rays into the interplanetary space\; th eir composition\; self-consistent acceleration of charged particles\, and generation of MHD turbulence in flare processes\; the effect of coronal ma ss ejections on the space-time distribution of solar and galactic cosmic r ays. As a result\, this will help to understand the physical processes in the heliosphere better and\, therefore\, more accurately predict the space weather in the vicinity of the Earth.\n\nhttps://indico.nevod.mephi.ru/ev ent/6/contributions/136/ LOCATION:Online Zoom URL:https://indico.nevod.mephi.ru/event/6/contributions/136/ END:VEVENT BEGIN:VEVENT SUMMARY:Solar energetic particles and trapped radiation in the near-Earth ’s Space: space experiments and modelling DTSTART;VALUE=DATE-TIME:20210608T131000Z DTEND;VALUE=DATE-TIME:20210608T133500Z DTSTAMP;VALUE=DATE-TIME:20260415T000513Z UID:indico-contribution-6-135@indico.nevod.mephi.ru DESCRIPTION:Speakers: Vladimir Kalegaev (SINP MSU)\nAmong the factors of s pace weather\, one of the most dangerous phenomena is radiation. Radiation in space exists due to the presence of charged particles of different nat ure and creates problems for the "vitality" of not only the spacecraft\, b ut also of humans. The main radiation threats are solar and galactic cosmi c rays\, fluxes of precipitating magnetospheric particles and trapped part icles of the Earth’s radiation belts. Solar and geomagnetic activity\, w hich determine space weather\, can cause drastic changes in physical condi tions in geospace\, which affect technological systems located both in spa ce and in polar regions on the surface of the Earth. To prevent emergencie s associated with cosmic factors\, it is necessary to constantly monitor t he solar activity and the state of the space environment.\nExperimental st udies and operational monitoring of trapped radiation and cosmic rays have been conducted by MSU’ Institute of Nuclear Physics since the beginning of the space age. The Institute has accumulated extensive experience in c reating instrumentation for measuring ionizing radiation from spacecraft. On the basis of the experiments carried out\, modern models of the space e nvironment have been created\, on the basis of which several national and international standards have been developed. Satellite measurement data an d models of the space environment are the basis for continuous monitoring of radiation conditions in space. Space Monitoring Data Center has been es tablished at SINP MSU for analysis and forecasting of the space environmen t radiation state.\n\nhttps://indico.nevod.mephi.ru/event/6/contributions/ 135/ LOCATION:Online Zoom URL:https://indico.nevod.mephi.ru/event/6/contributions/135/ END:VEVENT BEGIN:VEVENT SUMMARY:Diagnostics of electromagnetic conditions in the heliosphere on ef fects in cosmic rays DTSTART;VALUE=DATE-TIME:20210608T140000Z DTEND;VALUE=DATE-TIME:20210608T142500Z DTSTAMP;VALUE=DATE-TIME:20260415T000513Z UID:indico-contribution-6-134@indico.nevod.mephi.ru DESCRIPTION:Speakers: Valeriy Sdobnov ()\nA review is given of some result s of diagnostics of the electromagnetic characteristics of the heliosphere and Earth's magnetosphere within the framework of the model of modulation of cosmic rays by large-scale electromagnetic fields of the heliosphere\, obtained by the method of spectrographic global survey from ground-based observations of cosmic rays on the world network of stations.\n\nhttps://i ndico.nevod.mephi.ru/event/6/contributions/134/ LOCATION:Online Zoom URL:https://indico.nevod.mephi.ru/event/6/contributions/134/ END:VEVENT BEGIN:VEVENT SUMMARY:Geophysical aspect of the cosmic ray studies at the Tien Shan moun tain station: monitoring of radiation background\, investigation of atmosp heric electricity phenomena in thunderclouds and the search for earthquake precursor effects. DTSTART;VALUE=DATE-TIME:20210608T124500Z DTEND;VALUE=DATE-TIME:20210608T131000Z DTSTAMP;VALUE=DATE-TIME:20260415T000513Z UID:indico-contribution-6-133@indico.nevod.mephi.ru DESCRIPTION:Speakers: Vladimir Ryabov (LPI RAS)\nThe detector complex of t he Tien Shan mountain station provides a mean for studies in the different ranges of experimental geophysics. The particles detectors of the station can be used for monitoring of the various types of radiation background. The system of high- altitude detectors permit to register the flow of part icles accelerated by atmospheric electric field in thunderclouds\, while c ombination of diverse radiation receivers can be used for detection of lig htning emission simultaneously in different frequency ranges of electromag netic spectrum. For effectiveness illustration of the Tien Shan experiment al complex `Thunderstorm` a sample of unique data is presented here which were obtained in vicinity to the region of lightning development in thunde rclouds\, such as the temporal distributions and energy spectra of acceler ated up to (1-100) MeV electrons\, of the (30-3000) MeV gamma rays\, of th e optic and radio emission bursts. Another direction of geophysical studie s at Tien Shan anticipates using of the neutron\, muon\, gamma\, and elect romagnetic detectors for investigation of the various effects of seismic o rigin\, and for search for supposed correlation between such signals and i nteraction of the cosmic ray particles with the matter of the earth's crus t. Perspectives of such investigation are discussed here for the seismolog ical forecast problem and earthquake prediction in the surrounding region of the Tien Shan station.\n\nhttps://indico.nevod.mephi.ru/event/6/contrib utions/133/ LOCATION:Online Zoom URL:https://indico.nevod.mephi.ru/event/6/contributions/133/ END:VEVENT BEGIN:VEVENT SUMMARY:Large scale modulation: view from the earth points DTSTART;VALUE=DATE-TIME:20210608T122000Z DTEND;VALUE=DATE-TIME:20210608T124500Z DTSTAMP;VALUE=DATE-TIME:20260415T000513Z UID:indico-contribution-6-132@indico.nevod.mephi.ru DESCRIPTION:Speakers: Victor Yanke (IZMIRAN)\nhe current knowledge and ide as\, obtained from groundlevel observations and concerning the solar modul ation of cosmic rays\, are reviewed. The following topics are discussed: \ nobservations of the cosmic ray modulation at the Earth and main character istics of the accumulated experimental data\; manifestations of the solar magnetic cycle in cosmic rays\; the effect of hysteresis and its relation to size of the heliosphere\; the rigidity spectrum of long-term cosmic ray variations and its comparison with direct measurements on spacecraft\; ca libration of ground-based monitoring data using direct measurements on spa cecraft in comparable energy ranges\; the place of ground level observatio ns in current studies of cosmic ray modulation and their future prospects. \nParticular consideration is given to the correlation of long-term cosmi c ray variations with different solar-heliospheric parameters\, and to emp irical models of cosmic ray modulation.\n\nhttps://indico.nevod.mephi.ru/e vent/6/contributions/132/ LOCATION:Online Zoom URL:https://indico.nevod.mephi.ru/event/6/contributions/132/ END:VEVENT BEGIN:VEVENT SUMMARY:Investigation of cosmic ray modulation effects by the regular soun ding of charged particle fluxes in the atmosphere and on the ground DTSTART;VALUE=DATE-TIME:20210608T115500Z DTEND;VALUE=DATE-TIME:20210608T122000Z DTSTAMP;VALUE=DATE-TIME:20260415T000513Z UID:indico-contribution-6-131@indico.nevod.mephi.ru DESCRIPTION:Speakers: Vladimir Makhmutov (LPI RAS)\nFor the period from 19 57 to present time the results of observations of charged particle fluxes in the atmosphere of the northern and southern polar latitudes and the mid dle nothern one at the altitudes from the ground level up to 30-35 km are presented. The questions of the long-term modulation effecrts and its rela tionships with solar activity are discussed.\nCosmic rays are the main ion ization source in the Earth’s atmosphere. The role of charged particles in the atmospheric electrical phenomena is considered such as cloud and th undercloud formation\, ligthning production and the role of charged partic les in climate change. Some results of the international experiment CLOUD in CERN are given.\n\nhttps://indico.nevod.mephi.ru/event/6/contributions/ 131/ LOCATION:Online Zoom URL:https://indico.nevod.mephi.ru/event/6/contributions/131/ END:VEVENT BEGIN:VEVENT SUMMARY:Update on the WHISP combined analysis of muon measurements from ai r shower experiments DTSTART;VALUE=DATE-TIME:20210608T092500Z DTEND;VALUE=DATE-TIME:20210608T094500Z DTSTAMP;VALUE=DATE-TIME:20260415T000513Z UID:indico-contribution-6-165@indico.nevod.mephi.ru DESCRIPTION:Speakers: Hans Dembinski (TU Dort­mund Uni­ver­sity)\nI am presenting an update of the results from the Working group on Hadronic Int eractions and Shower Physics (WHISP) on the meta-analysis of muon measurem ents. In this analysis\, muon data from several experiments from a few PeV to tens of EeV were combined and studied in a unified framework. Above 10 PeV\, we find a muon excess with respect to simulations for all hadronic interaction models considered. This excess is increasing with shower energ y\, and for the models EPOS-LHC and QGSJet-II.04 the slope of the increase is found to be significant with more than 8 sigma. In this talk we review the analysis and show an investigation of the influence of each experimen t on the positive slope of the z-scale and its significance.\n\nhttps://in dico.nevod.mephi.ru/event/6/contributions/165/ LOCATION:Online Zoom URL:https://indico.nevod.mephi.ru/event/6/contributions/165/ END:VEVENT BEGIN:VEVENT SUMMARY:Machine learning techniques applications for the ENDA experiment d ata analysis DTSTART;VALUE=DATE-TIME:20210608T102500Z DTEND;VALUE=DATE-TIME:20210608T104000Z DTSTAMP;VALUE=DATE-TIME:20260415T000513Z UID:indico-contribution-6-166@indico.nevod.mephi.ru DESCRIPTION:Speakers: Oleg Shchegolev (INR RAS)\nUsing of machine learning (ML) and deep learning (DL) techniques in data analysis becomes a mainstr eam today and is presented in papers of leading experiments. These modern methods allow sometimes to increase the accuracy of for example mass compo sition reconstruction significantly. In current work ML and DL are applied for core location\, zenith angle estimation\, primary energy and mass rec onstruction based on data of ENDA experiment and corresponding CORSIKA + G EANT4 Monte-Carlo simulations. ENDA (Electron Neutron Detector Array) is a n extensive air shower (EAS) experiment based on idea of simultaneous reco rding of electromagnetic component of EAS and thermal neutrons produced by the hadron component of the shower. Results of the analysis are presented .\n\nhttps://indico.nevod.mephi.ru/event/6/contributions/166/ LOCATION:Online Zoom URL:https://indico.nevod.mephi.ru/event/6/contributions/166/ END:VEVENT BEGIN:VEVENT SUMMARY:Electron-Neutron Detector Array (ENDA) DTSTART;VALUE=DATE-TIME:20210608T101000Z DTEND;VALUE=DATE-TIME:20210608T102500Z DTSTAMP;VALUE=DATE-TIME:20260415T000513Z UID:indico-contribution-6-163@indico.nevod.mephi.ru DESCRIPTION:Speakers: Xin-hua Ma (IHEP-CAS)\nBy accurate measurement of co mponents and energy spectrum in the knee region\, problem of origin of cos mic ray can be solved. In one extensive air shower (EAS)\, high energy had rons\, which constitute the EAS skeleton as G.T. Zatsepin called it\, carr y important information for multi-parameter correlation studies. The nucle ar reaction between hadrons and matter in the surrounding environment (suc h as soil\, buildings\, detector materials\, and air) produces a large num ber of evaporation neutrons\; moderating by matter in the surrounding envi ronment\, the evaporation neutrons become thermal neutrons. At the beginni ng of the 21th century\, a new technology\, electron-neutron detector (EN- detector) was designed by Y. Stenkin and his colleagues\, and the PRImary Spectrum Measurement Array (PRISMA) project was proposed to reinforce arra y capability of cosmic ray composition separation and then improve measure ment accuracy of cosmic ray components and energy spectrum. Besides\, EN-d etectors can be used for continuous environmental thermal neutron flux mon itoring and its variation study needed not only for EAS experiment backgro und estimation but also for geophysical applications (e.g. earthquakes\, t hunderstorms\, radioactive aerosol control\, etc) and solar activity study (e.g. solar flares\, Forbush effects\, etc).\nUnder the Chinese-Russian c ooperation\, we put forward to build so called EN-Detector Array (ENDA) at high altitude in China. In 2013\, we placed a small array of 4 EN-detecto rs\, so called PRISMA-YBJ in the ARGO-YBJ experimental hall at Yangbajing (YBJ) (4300m a.s.l.)\, Tibet\, China\, with which we achieved the simultan eous detection of thermal neutrons and electromagnetic components in EAS c oincident events between PRISMA-YBJ and ARGO-YBJ. Up to now\, one cluster composed of 16 EN-detectors based on new type boron compound scintillator is running in Moscow. Meanwhile\, there are four clusters running in China for detectors and arrays specification test: one so called P-16-YBJ at YB J\, one so called ENDA-16-HZS at LHAASO (4410m a.s.l.)\, Daocheng\, Sichua n\, and two at Hebei Normal University (HNU) near sea level\, Shijiazhuang \, Hebei. ENDA-16-HZS has obtained coincident events with LHAASO. In the n ear future\, we plan to extend ENDA to ENDA-64 with array area of 1000 m2 inside LHAASO to study the knee region of the light components (H and He). After it\, ENDA will be extended up to 400 detectors with array area of 1 0000 m2 to study the knee region of the heavy components like Fe.\n\nhttps ://indico.nevod.mephi.ru/event/6/contributions/163/ LOCATION:Online Zoom URL:https://indico.nevod.mephi.ru/event/6/contributions/163/ END:VEVENT BEGIN:VEVENT SUMMARY:Review of investigations of muon bundles generated by very-high en ergy cosmic rays DTSTART;VALUE=DATE-TIME:20210608T094500Z DTEND;VALUE=DATE-TIME:20210608T101000Z DTSTAMP;VALUE=DATE-TIME:20260415T000513Z UID:indico-contribution-6-167@indico.nevod.mephi.ru DESCRIPTION:Speakers: Vladislav Vorobev (National Research Nuclear Univers ity MEPhI (Moscow Engineering Physics Institute))\nAutumn 2018\, the worki ng group WHISP had compiled the results of various experiments in which co smic ray muon bundles were registered. In some experiments\, an excess of the number of muons is observed in comparison with Monte-Carlo simulations with different hadronic interaction models at energies of primary nuclei above 10 PeV. However\, not all experiments showed an excess. We present a review of methods for detecting muon bundles by various installations whi ch data were investigated by WHISP group.\n\nhttps://indico.nevod.mephi.ru /event/6/contributions/167/ LOCATION:Online Zoom URL:https://indico.nevod.mephi.ru/event/6/contributions/167/ END:VEVENT BEGIN:VEVENT SUMMARY:Investigation of anomalous effects in cosmic rays. DTSTART;VALUE=DATE-TIME:20210608T104000Z DTEND;VALUE=DATE-TIME:20210608T110500Z DTSTAMP;VALUE=DATE-TIME:20260415T000513Z UID:indico-contribution-6-164@indico.nevod.mephi.ru DESCRIPTION:Speakers: Sergey Shaulov (LPI RAS)\nAbstract.\nStudying the sp ectrum of secondary particles at the Large Hadron Collider (LHC) at energi es equivalent to 1-100 PeV in the laboratory system\, scaling behavior is observed. At the same energies\, a number of effects are observed in cosmi c rays (CR) that are incompatible with this behavior. In the spectrum of e xtensive atmospher showers (EAS)\, a break (knee) is observed at an energ y of 3 PeV. According to the large ionization calorimeter at the Tien Sha n\, the absorption length of hadron showers increases in the same energy r egion. In the hybrid HADRON experiment\, there is a scaling violation in t he spectrum of secondary hadrons and an anomalous excess of muons in proto n showers. According to the data of X-ray emulsion chambers \, events with halos appear in the knee area and effect of alinement in energy centers o f gamma-hadron events are observed.. Given the LHC data\, these anomalies should be explained by astrophysical reasons\, i.e. changes in the composi tion of cosmic rays.\n\nhttps://indico.nevod.mephi.ru/event/6/contribution s/164/ LOCATION:Online Zoom URL:https://indico.nevod.mephi.ru/event/6/contributions/164/ END:VEVENT BEGIN:VEVENT SUMMARY:The analysis of muon component of extensive air showers from the S UGAR data DTSTART;VALUE=DATE-TIME:20210608T085500Z DTEND;VALUE=DATE-TIME:20210608T091000Z DTSTAMP;VALUE=DATE-TIME:20260415T000513Z UID:indico-contribution-6-162@indico.nevod.mephi.ru DESCRIPTION:Speakers: I. S. Karpikov (Institute for Nuclear Research of th e Russian Academy of Sciences)\nThe Sydney University Giant Air-shower Rec order (SUGAR) measured the muon component\nof extensive air showers from m uon-detector readings. Data of SUGAR allows us to reconstruct\nthe empiric al dependence of muon density on the distance from the axis of the shower -lateral\ndistribution function (LDF). We compare this function with the p redictions of hadronic interaction\nmodel QGSJET-II-04 for proton and iron with primary energy 10**17 – 10**18.5 eV.\n\nhttps://indico.nevod.meph i.ru/event/6/contributions/162/ LOCATION:Online Zoom URL:https://indico.nevod.mephi.ru/event/6/contributions/162/ END:VEVENT BEGIN:VEVENT SUMMARY:Status of the Yakutsk air shower array and future plans DTSTART;VALUE=DATE-TIME:20210608T083000Z DTEND;VALUE=DATE-TIME:20210608T085500Z DTSTAMP;VALUE=DATE-TIME:20260415T000513Z UID:indico-contribution-6-161@indico.nevod.mephi.ru DESCRIPTION:Speakers: Leonid Ksenofontov (Yu.G. Shafer Institute of Cosmop hysical Research and Aeronomy SB RAS)\nThe Yakutsk Extensive Air Shower Ar ray has been continuously operating for more than 50 years (since 1970) an d up until recently it has been one of world's largest ground-based instru ments aimed at studying the properties of cosmic rays in the ultra-high en ergy domain. In this report we discuss results recently obtained at the ar ray --- on cosmic rays energy spectrum\, mass composition and directional anisotropy --- and how they fit into the world data. Special attention is paid to the measurements of muonic component of extensive air showers. The oretical results of particle acceleration at shocks are also briefly revie wed. Future scientific and engineering plans on the array modernization ar e discussed.\n\nhttps://indico.nevod.mephi.ru/event/6/contributions/161/ LOCATION:Online Zoom URL:https://indico.nevod.mephi.ru/event/6/contributions/161/ END:VEVENT BEGIN:VEVENT SUMMARY:Study of environmental thermal neutron fluxes: from EAS to Geophys ics DTSTART;VALUE=DATE-TIME:20210608T071500Z DTEND;VALUE=DATE-TIME:20210608T074000Z DTSTAMP;VALUE=DATE-TIME:20260415T000513Z UID:indico-contribution-6-160@indico.nevod.mephi.ru DESCRIPTION:Speakers: Yuri Stenkin (INR RAS)\nThe electron-neutron detecto rs (en-detectors) were developed at INR RAS in the framework of the PRISMA project to study Extensive Air Shower (EAS) hadronic component through th ermalized neutrons. By continuous monitoring of neutron background with th e en-detectors we have found interesting variations in the environmental t hermal neutron flux. Environmental neutrons are produced by two sources: c osmic rays and natural radioactivity. They are in equilibrium with media a nd are therefore sensitive to many geophysical or Sun-Earth phenomena in a ccordance with the source of production. Some results are presented and di scussed.\n\nhttps://indico.nevod.mephi.ru/event/6/contributions/160/ LOCATION:Online Zoom URL:https://indico.nevod.mephi.ru/event/6/contributions/160/ END:VEVENT BEGIN:VEVENT SUMMARY:Prospects of “muon puzzle” solution with the NEVOD-DECOR-TREK complex DTSTART;VALUE=DATE-TIME:20210608T080500Z DTEND;VALUE=DATE-TIME:20210608T083000Z DTSTAMP;VALUE=DATE-TIME:20260415T000513Z UID:indico-contribution-6-159@indico.nevod.mephi.ru DESCRIPTION:Speakers: Egor Zadeba (National Research Nuclear University ME PhI (Moscow Engineering Physics Institute))\nMuon puzzle is a growing with cosmic ray energy excess of muons in EAS in comparison with simulations p erformed using various models of hadron interactions and even assuming a h eavy composition of cosmic rays. The main contribution to investigation of the energy dependence of the muon excess was done by NEVOD-DECOR experime nt. To separate two possible reasons of muon excess appearance (cosmophysi cal or nuclear-physical ones)\, measurements of the energy deposit of muon bundles are required. Such experiment is conducted at the NEVOD-DECOR com plex\, and the first results evident in favor of the nuclear-physical reas on. But both detectors NEVOD and DECOR have some drawbacks: non-symmetric arrangement of modules of PMTs in Cherenkov water detector NEVOD and small area (about 70 sq. m) and insufficient spatial accuracy of muon track mea surements (~ 1 cm) in coordinate-tracking detection DECOR. Nowadays\, the complex is being complemented with a new coordinate detector TREK with are a 250 sq.m based on multiwire drift chambers that will have spatial accura cy of 1 mm. In parallel\, modernization of the Cherenkov water detector NE VOD will be fulfilled. NEVOD-DECOR-TREK complex will allow us investigate the muon component of inclined extensive air showers in a very wide energy region from 10^14 to 10^19 eV and to solve the muon puzzle by means of si multaneous measurements of the number of muons in DECOR-TREK system and th eir energy deposit in Cherenkov water calorimeter NEVOD.\n\nhttps://indico .nevod.mephi.ru/event/6/contributions/159/ LOCATION:Online Zoom URL:https://indico.nevod.mephi.ru/event/6/contributions/159/ END:VEVENT BEGIN:VEVENT SUMMARY:Multi-component study of extensive air showers at the Tien Shan mo untain station of LPI and peculiarities of the particles flux behavior in the central region of the (1-100) PeV EAS DTSTART;VALUE=DATE-TIME:20210608T074000Z DTEND;VALUE=DATE-TIME:20210608T080500Z DTSTAMP;VALUE=DATE-TIME:20260415T000513Z UID:indico-contribution-6-158@indico.nevod.mephi.ru DESCRIPTION:Speakers: Alexander Shepetov (LPI RAS)\nNew experimental compl ex of the Tien Shan mountain cosmic ray station incorporates a set of dete ctor subsystems for simultaneous investigation of different components of extensive air showers (EAS) which arise from interaction of the (1-100) Pe V cosmic ray particles in atmosphere. Thus\, a wide-spread system of the c harged particles detectors is used for the measurement of local density of EAS electrons and for estimation by its spatial distribution of the main EAS parameters\, while a set of radio-antennas provides an alternative way for investigation of the EAS charged component. The ionization-neutron ca lorimeter and the neutron monitor give information on EAS hadrons with the energy above 0.1 TeV\, while the low-threshold neutron and gamma detector s can be applied for registration of the prolonged flux of thermalized neu trons after EAS passage. The underground muon detector is used for detecti on of the muonic component of cosmic rays in an exclusively wide range of muon energies\, starting from 5 GeV and up to tens and thousands of TeV\, and with estimation possibility of the energy of muon. The multi-component technique practiced now at Tien Shan permits to study effectively those a spects of high energy cosmic ray interaction which were never considered i n former experiments. In particular\, it is possible now to register the f low of EAS particles just around the region of EAS core which opens a real opportunity to solve the long standing problem of the 3 PeV knee in the e nergy spectrum of cosmic ray particles. Some examples of physical results gained lately at the Tien Shan detector complex are presented here for per formance illustration of the newly elaborated methods of EAS investigation .\n\nhttps://indico.nevod.mephi.ru/event/6/contributions/158/ LOCATION:Online Zoom URL:https://indico.nevod.mephi.ru/event/6/contributions/158/ END:VEVENT END:VCALENDAR