Browsing by Autor "T. Asaba"

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    ALPAQUITA Array in the ALPACA Project
    (2017) K. Kawata; T. Asaba; K. Hibino; N. Hotta; M. Kataoka; Y. Katayose; C. Kato; Hironori Kojima; R. Mayta; P. Miranda
    We are now proposing a new project which consists of a large air shower array (83,000 m^2) and a muon detector array (5,400 m^2) located at the altitude of 4,740 m near La Paz in Bolivia to observe 100 TeV gamma rays in the southern sky. The ALPAQUITA array is a prototype air shower array which will be constructed at the ALPACA site. This array consists of 45 scintillation counters of 1 m^2 in area each, and its effective area is approximately 8,000 m^2 (1/10 of ALPACA air shower array). In the present paper, we report on the current status and the performance of the ALPAQUITA array
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    The overview of the ALPACA Experiment
    (2017) M. Ohnishi; T. Asaba; K. Hibino; N. Hotta; M. Kataoka; Y. Katayose; C. Kato; K. Kawata; H. Kojima; R. Mayta
    The ALPACA experiment is a new project aimed at wide field-of-view high-sensitivity observations of high-energy cosmic rays and cosmic gamma rays, launched between Bolivia and Japan in 2016. It is composed of an 83,000 m$^2$ air shower array and a 5,400 m$^2$ underground muon detector array, on a highland at the altitude of 4,740 m, halfway up Mount Chacaltaya on the outskirts of La Paz, Bolivia.