抄録
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.
本文言語 | English |
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ホスト出版物のタイトル | Proceedings of the 33rd International Cosmic Rays Conference, ICRC 2013 |
出版社 | Sociedade Brasileira de Fisica |
巻 | 2013-October |
ISBN(電子版) | 9788589064293 |
出版ステータス | Published - 2013 1月 1 |
イベント | 33rd International Cosmic Rays Conference, ICRC 2013 - Rio de Janeiro, Brazil 継続期間: 2013 7月 2 → 2013 7月 9 |
Other
Other | 33rd International Cosmic Rays Conference, ICRC 2013 |
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国/地域 | Brazil |
City | Rio de Janeiro |
Period | 13/7/2 → 13/7/9 |
ASJC Scopus subject areas
- 核物理学および高エネルギー物理学