12-20 July 2017
Asia/Seoul timezone
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BEXCO - Room F(201/202/203/204)

[CRI273] Mass Composition of Cosmic Rays with Combined Surface Detector Arrays


  • Jakub VICHA

Primary authors

  • Jakub VICHA (Institute of Physics of the Czech Academy of Sciences)


  • Dalibor NOSEK (Faculty of Mathematics and Physics, Charles University)
  • Petr TRAVNICEK (Institute of Physics of the Czech Academy of Sciences)
  • Jan EBR (Institute of Physics of the Czech Academy of Sciences)


Our study exploits the Constant Intensity Cut principles applied simultaneously to muonic and electromagnetic detectors of cosmic rays. We use the fact that the ordering of events according to their signal sizes induced in different types of surface detectors provides information about the mass composition of primary cosmic-ray beam, with low sensitivity to details of hadronic interactions. Composition analysis at knee energies is performed using Monte Carlo simulations for extensive air showers having maxima located far away from a hypothetical observatory. Another type of a hypothetical observatory is adopted to examine composition of ultra-high energy primaries which initiate vertical air showers with maxima observed near surface detectors.