Observation of electrons above 100 GeV with the BETS detector using long-duration balloon in Antarctica

Shoji Torii, T. Tamura, T. Yamagami, M. Ejiri, H. Kitamura, I. Iijima, A. Kadokura, K. Kasahara, Y. Katayose, T. Kobayashi, Y. Komori, Y. Matsuzaka, K. Mizutani, H. Murakami, M. Namiki, J. Nishimura, S. Ohta, Y. Saito, M. Shibata, N. TateyamaH. Yamagishi, K. Yoshida, T. Yuda, J. Chang

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

    1 Citation (Scopus)

    Abstract

    We had a long duration balloon flight for observing cosmic-ray electrons from 10 GeV to 1000 GeV by the Polar Patrol Balloon (PPB) in Antarctica. The observation was carried out for 13 days at an average altitude of 35 km in January 2004. The detector is an imaging calorimeter composed of scintillating-fiber belts and plastic scintillators inserted between lead plates. The performance of the detector has been confirmed by the beam test at CERN-SPS and also investigated by Monte-Carlo simulations. We have collected 5.7×103 events above 100GeV including nearly 100 candidates of primary electrons. Preliminary result of the electron energy spectrum in 100̃1000 GeV has been obtained.

    Original languageEnglish
    Title of host publication29th International Cosmic Ray Conference, ICRC 2005
    PublisherTata Institute of Fundamental Research
    Pages29-32
    Number of pages4
    Volume3
    Publication statusPublished - 2005
    Event29th International Cosmic Ray Conference, ICRC 2005 - Pune, India
    Duration: 2005 Aug 32005 Aug 10

    Other

    Other29th International Cosmic Ray Conference, ICRC 2005
    CountryIndia
    CityPune
    Period05/8/305/8/10

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    ASJC Scopus subject areas

    • Nuclear and High Energy Physics

    Cite this

    Torii, S., Tamura, T., Yamagami, T., Ejiri, M., Kitamura, H., Iijima, I., Kadokura, A., Kasahara, K., Katayose, Y., Kobayashi, T., Komori, Y., Matsuzaka, Y., Mizutani, K., Murakami, H., Namiki, M., Nishimura, J., Ohta, S., Saito, Y., Shibata, M., ... Chang, J. (2005). Observation of electrons above 100 GeV with the BETS detector using long-duration balloon in Antarctica. In 29th International Cosmic Ray Conference, ICRC 2005 (Vol. 3, pp. 29-32). Tata Institute of Fundamental Research.