Primary proton and helium spectra at energy range from 50 TeV to 1015 eV observed with (YAC-I + Tibet-III) hybrid experiment

THE TIBET ASγ COLLABORATION

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

A new EAS hybrid experiment has been designed by constructing a YAC (Yangbajing Air shower Core detector array) inside the existing Tibet-III air shower array. The first step of YAC called”YAC-I” has been successfully carried out in 2009-2010 together with Tibet-III air-shower array. YAC-II has also been operated from 2011. In this proceeding, the primary proton and helium spectra at energy range from 50 TeV to 1015 eV derived from YAC-I data based on the newest interaction model EPOS-LHC (v.3400), QGSJETII-04 and SIBYLL2.1 are reported. The obtained (P+He) spectra is smoothly connected with direct observation data below 100 TeV and also with our previously reported results at higher energies within statistical errors. The knee of the (P+He) spectra is located around 400 TeV. The interaction model dependence in deriving the primary (P+He) spectra are found to be small (less than 25% in absolute intensity, 10% in position of the knee), and the composition model dependence is less than 10% in absolute intensity.

Original languageEnglish
Title of host publicationProceedings of the 33rd International Cosmic Rays Conference, ICRC 2013
PublisherSociedade Brasileira de Fisica
Volume2013-October
ISBN (Electronic)9788589064293
Publication statusPublished - 2013 Jan 1
Event33rd International Cosmic Rays Conference, ICRC 2013 - Rio de Janeiro, Brazil
Duration: 2013 Jul 22013 Jul 9

Other

Other33rd International Cosmic Rays Conference, ICRC 2013
CountryBrazil
CityRio de Janeiro
Period13/7/213/7/9

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Keywords

  • Cosmic rays
  • Helium
  • Knee energy region
  • Neural network
  • Proton

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Cite this

THE TIBET ASγ COLLABORATION (2013). Primary proton and helium spectra at energy range from 50 TeV to 1015 eV observed with (YAC-I + Tibet-III) hybrid experiment. In Proceedings of the 33rd International Cosmic Rays Conference, ICRC 2013 (Vol. 2013-October). Sociedade Brasileira de Fisica.