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Mini Neutron Monitors at Concordia Research Station, Central Antarctica
Stepan Poluianov,Ilya Usoskin,Alexander Mishev,Harm Moraal,Helena Krüger,Giampietro Casasanta,Rita Traversi,Roberto Udisti 한국우주과학회 2015 Journal of Astronomy and Space Sciences Vol.32 No.4
Two mini neutron monitors are installed at Concordia research station (Dome C, Central Antarctica, 75°06'S, 123°23'E, 3,233 m.a.s.l.). The site has unique properties ideal for cosmic ray measurements, especially for the detection of solar energetic particles: very low cutoff rigidity < 0.01 GV, high elevation and poleward asymptotic acceptance cones pointing to geographical latitudes > 75°S. The instruments consist of a standard neutron monitor and a "bare" (lead-free) neutron monitor. The instrument operation started in mid-January 2015. The barometric correction coefficients were computed for the period from 1 February to 31 July 2015. Several interesting events, including two notable Forbush decreases on 17 March 2015 and 22 June 2015, and a solar particle event of 29 October 2015 were registered. The data sets are available at cosmicrays.oulu.fi and nmdb.eu.