BEGIN:VCALENDAR VERSION:2.0 PRODID:-//CERN//INDICO//EN BEGIN:VEVENT SUMMARY:The camera of the Image Atmospheric Cherenkov Telescope for the TA IGA project DTSTART;VALUE=DATE-TIME:20161012T144500Z DTEND;VALUE=DATE-TIME:20161012T150000Z DTSTAMP;VALUE=DATE-TIME:20260814T161442Z UID:indico-contribution-75-790@cern.ch DESCRIPTION:Speakers: Igor Yashin (National Research Nuclear University ME PhI)\nThe TAIGA Observatory is aimed to provide the study of gamma-rays of high energies (above 100 TeV) and cosmic rays with energies higher than 1 0 PeV. The main advantage of the observatory is a hybrid method of detecti on of EAS generated by gamma rayswith an array of wide-angle detectors of Cherenkov radiation of EAS and by the network of IACT.\nIn the report the features of design of the camera of Cherenkov telescope and its detection system designed to work in the condition of hard Siberian winter are disc ussed.\n\nhttps://indico.particle.mephi.ru/event/4/contributions/790/ LOCATION:Milan Hotel Verdi URL:https://indico.particle.mephi.ru/event/4/contributions/790/ END:VEVENT BEGIN:VEVENT SUMMARY:Investigation of EAS electron and muon components by means of NEVO D calibration telescope system DTSTART;VALUE=DATE-TIME:20161012T134500Z DTEND;VALUE=DATE-TIME:20161012T140000Z DTSTAMP;VALUE=DATE-TIME:20260814T161442Z UID:indico-contribution-75-784@cern.ch DESCRIPTION:Speakers: Mikhail Amelchakov (MEPhI)\nThe results of the long- term investigations of very high energy extensive air showers with the cal ibration telescope system (CTS) are presented. The CTS setup is a part of the NEVOD experimental complex. Its top plane is used to register the elec tron EAS component in the primary particle energy range of 10^14–10^15 e V\, while the bottom plane can register muon component in the primary ener gy range of 10^16–10^18 eV. Two independent methods of reconstruction of the spectrum of the local density of charged particles are considered. Th e effects of building construction and water pool on the measurement resul ts were calculated using Geant4. The exponents of charged particles local density spectra are obtained for different energy ranges\, and the presenc e of the second “knee” in the spectrum of the muon EAS component is co nfirmed. The results are compared with CORSIKA calculations and data from other setups.\n\nhttps://indico.particle.mephi.ru/event/4/contributions/78 4/ LOCATION:Milan Hotel Verdi URL:https://indico.particle.mephi.ru/event/4/contributions/784/ END:VEVENT BEGIN:VEVENT SUMMARY:Back-tracking of primary particle trajectories for muons detected at the Earth surface DTSTART;VALUE=DATE-TIME:20161012T131500Z DTEND;VALUE=DATE-TIME:20161012T133000Z DTSTAMP;VALUE=DATE-TIME:20260814T161442Z UID:indico-contribution-75-732@cern.ch DESCRIPTION:Speakers: Victor Shutenko (National Research Nuclear Universit y (MEPhI))\nInvestigations of cosmic rays on the surface of the Earth allo w to derive information of applied character on the conditions of the inte rplanetary magnetic field and of the geomagnetic field. For this purpose\, it is necessary to collate the trajectories of the particles detected in the ground detector to trajectories of primary cosmic rays in the heliosph ere. This problem is solved by means of various back-tracking methods. In this work\, one of such methods is presented.\n\nhttps://indico.particle.m ephi.ru/event/4/contributions/732/ LOCATION:Milan Hotel Verdi URL:https://indico.particle.mephi.ru/event/4/contributions/732/ END:VEVENT BEGIN:VEVENT SUMMARY:Relation of muon flux local anisotropy with primary spectrum index DTSTART;VALUE=DATE-TIME:20161012T130000Z DTEND;VALUE=DATE-TIME:20161012T131500Z DTSTAMP;VALUE=DATE-TIME:20260814T161442Z UID:indico-contribution-75-668@cern.ch DESCRIPTION:Speakers: Anna Dmitrieva (National Research Nuclear University MEPhI (Moscow Engineering Physics Institute))\nURAGAN is a wide-aperture precision muon hodoscope located in Moscow\, Russia\, 55.7$^\\circ$ N\, 37 .7$^\\circ$ E\, 173 m a.s.l. It allows to obtain the angular distribution of the muon flux. This distribution may be characterized by a vector of lo cal anisotropy (the sum of the vectors of the particle arrival directions\ , normalized to the total number of muons). It was shown earlier that annu al variations in the vertical projection of the anisotropy vector $A_{\\rm Z}$ are observed\, and they are not related with changes in atmospheric c onditions. It was supposed that the annual variations are caused by change s in the shape of the energy spectrum of primary particles. The dependence of $A_{\\rm Z}$ on the index of the primary particles spectrum $\\gamma$ was calculated for several zenith angle intervals with the help of simulat ion of generation and propagation of secondary cosmic ray particles throug h the atmosphere using the CORSIKA program package. Experimental temporal series of the vertical projection of the local anisotropy $A_{\\rm Z}$ for several intervals of zenith angles were obtained for 2007-2015. For $A_{\ \rm Z}$ estimations\, 1 h averaged muon matrices with corrections for baro metric and temperature effects were used. According to obtained $A_{\\rm Z }$ time series\, the average annual daily changes of $\\Delta\\gamma$ were estimated. Annual and daily changes in the slope of the energy distributi on of primary protons are observed. In the range of the mean energy of pri mary protons 70-110 GeV the annual changes of $\\gamma$ are 0.02-0.04\, an d the daily changes are 0.0025-0.004.\n\nhttps://indico.particle.mephi.ru/ event/4/contributions/668/ LOCATION:Milan Hotel Verdi URL:https://indico.particle.mephi.ru/event/4/contributions/668/ END:VEVENT BEGIN:VEVENT SUMMARY:Multi-level system of formation of trigger signals for selection o f events in the NEVOD detector DTSTART;VALUE=DATE-TIME:20161012T140000Z DTEND;VALUE=DATE-TIME:20161012T141500Z DTSTAMP;VALUE=DATE-TIME:20260814T161442Z UID:indico-contribution-75-613@cern.ch DESCRIPTION:Speakers: Victor Kindin (National Research Nuclear University MEPhI (Moscow Engineering Physics Institute))\nThe description of the NEVO D detector multi-level system of trigger signal formation created for on-l ine selection of events is presented. The first level forms signals of thr ee types for each quasispherical module (QSM) and provides registration of events with one or several photomultipliers. The second level represents a coincidence circuit of triggers from QSM clusters. This level is based o n three V1495 CAEN programmable logic units. Each unit processes its own t ype of trigger signals. One of the units ensures formation of system-wide signal and its broadcasting to all installations of the complex. The fourt h unit produces trigger signals from the top and the bottom planes of the calibration telescopes system. The NEVOD detector triggering conditions an d their synchronization with other installations are described. Results of studying of the trigger signal counting rates for different coincidence m ultiplicities and temporal dependences of the used triggers are given.\n\n https://indico.particle.mephi.ru/event/4/contributions/613/ LOCATION:Milan Hotel Verdi URL:https://indico.particle.mephi.ru/event/4/contributions/613/ END:VEVENT BEGIN:VEVENT SUMMARY:The recording system of the URAN array DTSTART;VALUE=DATE-TIME:20161012T141500Z DTEND;VALUE=DATE-TIME:20161012T143000Z DTSTAMP;VALUE=DATE-TIME:20260814T161442Z UID:indico-contribution-75-556@cern.ch DESCRIPTION:Speakers: Konstantin Yurin (National Research Nuclear Universi ty MEPhI (Moscow Engineering Physics Institute))\nIn MEPhI\, the URAN arra y for registration of the neutron component of extensive air showers (EAS) is being created. The setup has a cluster structure and includes 6 cluste rs of 12 detectors each\, located on the roofs of the buildings. En-detect ors capable of simultaneous registration of two main EAS components are us ed: electromagnetic (e) and neutron (n). The recording system of the setup consists of twelve boards of amplitude analysis (two boards per cluster)\ , which are synchronized in time with the accuracy of 10 ns. Each board ha s six dual-12-bit channel ADC with 200 MHz sampling frequency. To register the delayed EAS neutrons the ability to change the sampling frequency in six cards from 200 MHz to 1 MHz is used. Recording time at 1 MHz sampling frequency is 20000 ms. The recording system is integrated by the Central D AQ Post and data transmission from the boards is performed via fiber optic lines.\n\nhttps://indico.particle.mephi.ru/event/4/contributions/556/ LOCATION:Milan Hotel Verdi URL:https://indico.particle.mephi.ru/event/4/contributions/556/ END:VEVENT BEGIN:VEVENT SUMMARY:Energy characteristics of muon bundles in a wide range of zenith a ngles DTSTART;VALUE=DATE-TIME:20161012T133000Z DTEND;VALUE=DATE-TIME:20161012T134500Z DTSTAMP;VALUE=DATE-TIME:20260814T161442Z UID:indico-contribution-75-552@cern.ch DESCRIPTION:Speakers: Aleksei Bogdanov (National Research Nuclear Universi ty MEPhI (Moscow Engineering Physics Institute))\nStudy of the energy char acteristics of EAS muon component with an increase the primary particle en ergy can be a key to solving the "muon puzzle" – the problem of muon exc ess in EAS observed in several experiments.\nSuch investigations are curre ntly being conducted in the NEVOD-DECOR experiment on detection of incline d muon bundles. Cherenkov water detector NEVOD measures the energy deposit of muons\, which is almost linearly related to their energy. Coordinate-t racking detector DECOR measures the number of muons and their direction. T he detection of muon bundles of various multiplicities in a wide range of zenith angles allows to explore the interval of primary particles energies from 10^16 to 10^18 eV.\nIn the present work\, data of long series of mea surements from May 2012 to March 2016 are analyzed. The experimental data are compared with the results of calculations based on simulations of the muon component of EAS by means of the CORSIKA code.\nd simulations of the EAS muon component. A possible evidence for an increase of the energy depo sit at primary energies above 10^17 eV is observed.\nIt has been found tha t the average specific energy deposit in the Cherenkov calorimeter appreci ably increases with zenith angle\, thus reflecting the increase of the mea n muon energy in the bundles. It is in a reasonable agreement with CORSIKA -based simulations of the EAS muon component. A possible evidence for an i ncrease of the energy deposit at primary energies above 10^17 eV is observ ed.\n\nhttps://indico.particle.mephi.ru/event/4/contributions/552/ LOCATION:Milan Hotel Verdi URL:https://indico.particle.mephi.ru/event/4/contributions/552/ END:VEVENT BEGIN:VEVENT SUMMARY:Testing of the DPMJET and VENUS hadronic interaction models with t he help of the atmospheric muons DTSTART;VALUE=DATE-TIME:20161012T143000Z DTEND;VALUE=DATE-TIME:20161012T144500Z DTSTAMP;VALUE=DATE-TIME:20260814T161442Z UID:indico-contribution-75-534@cern.ch DESCRIPTION:Speakers: Anton Lukyashin (ITEP\, NRNU MEPhI)\nThe more accura te original calculations of the atmospheric vertical energy spectrum at en ergies $10^{2} - 10^{5} \\space $ GeV have been carried out in terms of DP MJET $~2.55 \\space $ and VENUS $~4.12 \\space $ models. The Gaisser-Honda approximation and results of measurements of energy of primary protons\, helium and nitrogen nuclei has been used. The package CORSIKA $~7.4 \\spa ce $ has been used to simulate in the standard atmosphere cascades induce d by different primary particles with various fixed energies $E_{0} \\spac e $. Statistics of simulated cascades for secondary particles with energie s (0.01–1)$ \\cdot E_{0} \\space $ was increased up to $10^{6} \\space $ . The results of simulations have been compared with data. This fit showed how the used models have been changed.\n\nhttps://indico.particle.mephi.r u/event/4/contributions/534/ LOCATION:Milan Hotel Verdi URL:https://indico.particle.mephi.ru/event/4/contributions/534/ END:VEVENT END:VCALENDAR