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A real-time cosmic ray monitoring at the Antarctic station Mirny

1070. A real-time cosmic ray monitoring at the Antarctic station Mirny Garbatsevich V., Klepach E., Osin A., Smirnov D., Tsybulya K. and Yanke V. Institute of Terrestrial Magnetism, Ionosphere and Radio Wave Propagation (IZMIRAN), Moscow, Russia.

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A real-time cosmic ray monitoring at the Antarctic station Mirny

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  1. 1070 A real-time cosmic ray monitoring at the Antarctic station Mirny Garbatsevich V., Klepach E., Osin A., Smirnov D., Tsybulya K. and Yanke V. Institute of Terrestrial Magnetism, Ionosphere and Radio Wave Propagation (IZMIRAN), Moscow, Russia We depict the Antarctic cosmic ray station Mirny, which has been modernized to meat the requirements of the modern cosmic ray monitoring.There is given a description of the subsystems of registration, acquisition, and a subsequent real-time transmission via satellite of the cosmic ray intensity data with a 1 minute temporal resolution. Also, a quality estimation for the last observation period is shown.

  2. Monthly mean CR variations at the stations of Russian NM Network over the history of observations..

  3. The neutron supermonitor at the Antarctic station Mirny. Characteristics of the CR stationMirny. Detector 12nm64Geographic coordinates 66.55S, 93.02E Altitude a.s.l. 30 mStandard pressure1013 mb Overlap thickness 10 g/cm2Accuracy of pressure measurement0.2 mb (per min) Average count rate 130 imp/sec Accuracy of GPS time correction1 sec

  4. Daily mean CR variations (relatively February 1987) recorded at station Mirny through 2007-2009.

  5. Satellite systems of connection and overlapping zones Inmarsat GlobalStar Iridium — International satellite connector. Coverage is100%. Thuraya

  6. Mating stations The main managing Center (near the Washington) Station of mating Станции сопряжения Станции сопряжения

  7. IRIDIUM channel scheme Schematic of the data transfer via the Iridium network. SBD — Short Burst Data; SPP — SBD Post Processor; ETC — Earth Terminal Controller; ECS — ETC Communications Subsystem; ETS — ETC Transmission system; SEP — SBD ETC Processor; PSTN — Public Switched Telephone Network.

  8. IRIDIUM modem on the basis of module SBD-9601

  9. IRIDIUM antenna system at Mirny station

  10. Meteorological effects Typical variations of the counting rate of neutron component (not corrected to Bernoulli effect), and the wind velocity at Mirny station in June, 2007.

  11. Distribution of temporal delays in arrival of data packages from Mirny station.

  12. NMDB- database of neutron monitors in real time with high time resolution

  13. Efficiency estimation for the Mirny station drawn by the model method (black curve) and by the method of relations (red curve). The efficiency values are normalized to the level of February, 2008.

  14. CONCLUSION A two-year exploitation of the modernized cosmicray station Mirny has shown a reliability of the dataregistration and acquisition system even upon a nonidealpower feeding in expedition conditions. Also,a steady operation reliability has proven the satellitesystem Iridium, which ensures a real-time transfer andInternet publication of the data of Mirny cosmic raystation with a minute resolution.

  15. REFERENCES [1] E.Klepach, C.Sarlanis, A.Shepetov, V.Yanke Proc. 31th ICRC, Poland, ID 1071, 2009. [2] http://www.iridium.ru/ [3] http://www.tecckom.ru/satellite choose.php [4] V.Korotkov, M.Berkova, M.Basalaev et al. Proc. 31th ICRC, Poland, ID 1076, 2009. [5] S.Kawasaki Sci. Rap. of Inst. Phys. Chem. Res., 66(2), 25-32, 1972. [6] J.A.Lockwood, A.R.Calawa, J.Atmos et al. Terr.Phys., 11, 23, 1961. [7] R.Buticofer, E.O.Flugiker, Proc. 26th ICRC, Salt Like City, 6, 395-398, 1999. [8] A.Asipenka, A.Belov, R.Gushchina et al. , Proc. 31th ICRC, Poland, ID 10312009. http://www.bartol.udel.edu/~clem/nm/display/mcdata10.html

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