BEGIN:VCALENDAR VERSION:2.0 PRODID:-//CERN//INDICO//EN BEGIN:VEVENT SUMMARY:Fluxes of Hadrons\, Muons and Electromagnetic Components at the Mo untain Altitude induced by Hadrons in the Atmosphere with Energies between 100MeV and 1000 GeV DTSTART;VALUE=DATE-TIME:20070707T134200Z DTEND;VALUE=DATE-TIME:20070707T135400Z DTSTAMP;VALUE=DATE-TIME:20261016T113259Z UID:indico-contribution-80-0-276@cern.ch DESCRIPTION:Speakers: Prof. MURAKI\, Yasushi (Nagoya University)\nBy the s olar flare\, a large number of solar protons are usually accelerated into \nhigh energies. When the intensities of solar protons are very strong\, they are \nobserved as a phenomenon\, the Ground Level Enhancement (GLE). However\, \nit is used to be reported in the cosmic ray conferences how m uch percentage \nthey increased in comparison with the flux of the galacti c cosmic rays.\nIn order to know how large solar flare arrived on the Eart h at the first stage\,\nthe quick analysis is enough\, however when we wan t to reduce the energy \nspectra of arrived protons\, we will encounter a difficulty. The traditional \nprocedure is not enough.\n The detectors are located at different places of the world\, they are located at \ndiff erent altitude\, so the attenuation of neutrons and protons in the \natmos phere is different from each by each detector. We need correction taking \naccount of such a difference\, when we will obtain the energy spectra of \nprotons. However the Monte Carlo calculation done by Shibata only ga ve the \nattenuation curve in the atmosphere for neutrons with energies be tween 50 \nMeV to 1 GeV. \n In this paper\, we use two Monte Carlo simu lation codes: the Geant 4 and the \nCORSICA and try to obtain a very impor tant and useful correction data for the \nhadrons with energies 100MeV-100 0GeV.\n\nhttps://indico.nucleares.unam.mx/event/4/session/80/contribution/ 276 LOCATION:Merida\, Mexico Yucatan I (Fiesta Americana) URL:https://indico.nucleares.unam.mx/event/4/session/80/contribution/276 END:VEVENT BEGIN:VEVENT SUMMARY:Muon diagnostics of the Earth's atmosphere\, near-terrestrial spac e and heliosphere: first results and perspectives DTSTART;VALUE=DATE-TIME:20070707T135400Z DTEND;VALUE=DATE-TIME:20070707T140600Z DTSTAMP;VALUE=DATE-TIME:20261016T113259Z UID:indico-contribution-80-0-296@cern.ch DESCRIPTION:Speakers: Dr. TIMASHKOV\, Dmitry (MEPhI)\nMuon diagnostics is a new technique of remote monitoring and forecasting of \nthe development of various dynamic processes in the heliosphere and in the \natmosphere an d magnetosphere of the Earth based on the analysis of spatial-\nangular an d temporal variations of muon flux simultaneously detected from all \ndire ctions of upper hemisphere. For practical realization of the technique mul ti-\ndirectional muon detectors (hodoscopes) with large acceptance and hig h \nangular accuracy were designed and constructed in Moscow Engineering \ nPhysics Institute. First results of data analysis show that registration of muon \nflux in hodoscopic mode gives unique real-time information about processes in \nthe Earth's atmosphere and also about phenomena in the int erplanetary space \nrelated with solar activity. The use of muon diagnosti cs for remote localization \nof disturbed regions in the Earth's atmospher e and near-terrestrial space and \nits forecasting potential are also disc ussed.\n\nhttps://indico.nucleares.unam.mx/event/4/session/80/contribution /296 LOCATION:Merida\, Mexico Yucatan I (Fiesta Americana) URL:https://indico.nucleares.unam.mx/event/4/session/80/contribution/296 END:VEVENT BEGIN:VEVENT SUMMARY:Muon flux in the atmosphere at solar activity minimum DTSTART;VALUE=DATE-TIME:20070707T140600Z DTEND;VALUE=DATE-TIME:20070707T141800Z DTSTAMP;VALUE=DATE-TIME:20261016T113259Z UID:indico-contribution-80-0-315@cern.ch DESCRIPTION:Speakers: Dr. MAKHMUTOV\, Vladimir (Lebedev Physical Institute Russian Academy of Sciences\, Russia)\nMeasurements of muon flux in the a tmosphere have been performed \nby Lebedev Physical Institute during sea e xpeditions in November\, 1975 - \nMarch\, 1976 period. This survey cove red a wide range of latitudes with \ngeomagnetic cutoff rigidities Rc fr om 0.8 up to 14.2 GV. \nThe data on muon flux as a function of atmospheric depth ( X~ 10-1000 g/cm2) \nwere\nobtained.\nOn the other hand based on G EANT4 facilities we have calculated the \nsecondary \nmuon fluxes produced by galactic cosmic rays in the atmosphere at different Rc \nduring solar activity minimum epoch. \nThe experimental and calculation results as well as their comparison \nare presented in the paper.\n\nhttps://indico.nucle ares.unam.mx/event/4/session/80/contribution/315 LOCATION:Merida\, Mexico Yucatan I (Fiesta Americana) URL:https://indico.nucleares.unam.mx/event/4/session/80/contribution/315 END:VEVENT BEGIN:VEVENT SUMMARY:Cosmic Ray Induced Ionization in the Atmosphere: Full Modeling DTSTART;VALUE=DATE-TIME:20070707T141800Z DTEND;VALUE=DATE-TIME:20070707T143000Z DTSTAMP;VALUE=DATE-TIME:20261016T113259Z UID:indico-contribution-80-0-433@cern.ch DESCRIPTION:Speakers: Dr. USOSKIN\, Ilya (Sodankylä Geophysical Observato ry (Oulu unit)\, POB 3000\, FIN-90014 University of Oulu\, Finland)\nWe pr esent a physical model to calculate cosmic ray induced ionization in the\n atmosphere. The model is based on the Monte-Carlo CORSIKA tool\, which sim ulates full\ndevelopment of an electromagnetic-muon-nucleonic cascade in t he atmosphere\, with the\nFLUKA package used for low energy interactions. The model is applicable to the entire\natmosphere\, from the ground up to the stratosphere. A comparison to fragmentary\ndirect measurements of the ionization in the atmosphere confirms the validity of the\nmodel in the wh ole range of geographical latitudes and altitudes. We provide a\ndetailed recipe to compute easily the cosmic ray induced ionization for given\nloca tion\, altitude and the spectrum of cosmic rays. This provides a new tool for a\nquantitative study of the space weather influence upon the Earth's environment. Some\npractical applications are discussed.\n\nhttps://indico .nucleares.unam.mx/event/4/session/80/contribution/433 LOCATION:Merida\, Mexico Yucatan I (Fiesta Americana) URL:https://indico.nucleares.unam.mx/event/4/session/80/contribution/433 END:VEVENT BEGIN:VEVENT SUMMARY:The yearly and seasonal variations from 7-year data set of daily c osmogenic nuclide Be-7 concentrations in the atmosphere DTSTART;VALUE=DATE-TIME:20070707T143000Z DTEND;VALUE=DATE-TIME:20070707T144200Z DTSTAMP;VALUE=DATE-TIME:20261016T113259Z UID:indico-contribution-80-0-556@cern.ch DESCRIPTION:Speakers: Mr. KIKUCHI\, Satoshi (Department of Physics Yamagat a University)\nBe-7 is produced by interaction between cosmic rays and nit rogen or oxygen in \nthe atmosphere. The variation of its concentration in dicates the variation of \ncosmic-rays intensity. Cosmic rays which reach the earth are modulated by the \nsolar activities in the heliosphere. It i s important to investigate the relationship \nbetween the concentrations o f Be-7 and the solar activities\, because of the \nestimation of the solar activities in past time using the cosmogenic nuclide with \nthe long half -life.\n We have been continuously observing the daily Be-7 concentration in \nYamagata\, Japan (38.3°N\, 140.3°E) since 2000. Based on the 7-year \nobservation\, anti-correlations between the Be-7s and the sunspot numbe rs are \nobtained. The variation of Be-7 concentrations was 38 % during th e 7 years \nwhen the sunspot numbers changed 75 %. However\, as the behavi or is not so \nsimple\, we have analyzed the seasonal variations.\n Moreov er\, the Be-7 concentrations have been continuously observed in Iceland\n( 64.7°N\, 21.2°W) since Sep.2003. This observation point is situated at h igh \nlatitude.\n We report the relationship between the variation of Be-7 concentrations and \nsolar activities\, using the 7-year data set and the 3-year dataset in Iceland.\n\nhttps://indico.nucleares.unam.mx/event/4/se ssion/80/contribution/556 LOCATION:Merida\, Mexico Yucatan I (Fiesta Americana) URL:https://indico.nucleares.unam.mx/event/4/session/80/contribution/556 END:VEVENT BEGIN:VEVENT SUMMARY:Cosmic Rays and Global Warming DTSTART;VALUE=DATE-TIME:20070707T144200Z DTEND;VALUE=DATE-TIME:20070707T145400Z DTSTAMP;VALUE=DATE-TIME:20261016T113259Z UID:indico-contribution-80-0-1303@cern.ch DESCRIPTION:Speakers: Prof. WOLFENDALE\, Arnold (Durham University)\nIt ha s been claimed (Szensmark\, 2007\, and others) that observed correlations \nof terrestrial cloud cover with 'the cosmic ray intensity' are casual. The \npossibility arises\, therefore of a connection between cosmic ray in tensity and \nGlobal Warming. If true\, the implications would be very gr eat.\nAn examination of the situation is made.\n\nhttps://indico.nucleares .unam.mx/event/4/session/80/contribution/1303 LOCATION:Merida\, Mexico Yucatan I (Fiesta Americana) URL:https://indico.nucleares.unam.mx/event/4/session/80/contribution/1303 END:VEVENT END:VCALENDAR