Bess and its future prospect for polar long duration flights

A. Yamamoto, K. Abe, K. Anraku, Y. Asaoka, M. Fujikawa, H. Fuke, S. Haino, M. Imori, K. Izumi, T. Maeno, Y. Makida, N. Matsui, H. Matsumoto, H. Matsunaga, F. B. McDonald, J. Mitchell, T. Mitsui, A. Moiseev, M. Motoki, J. NishimuraM. Nozaki, S. Orito, J. F. Ormes, D. Righter, T. Saeki, T. Sanuki, M. Sasaki, E. S. Seo, Y. Shikaze, T. Sonoda, R. Streitmatter, J. Suzuki, K. Tanaka, K. Tanizaki, I. Ueda, J. Z. Wang, N. Yajima, T. Yamagami, Y. Yamamoto, H. Yamaoka, K. Yamato, T. Yoshida, K. Yoshimura

Research output: Contribution to journalArticlepeer-review

36 Citations (Scopus)


The Balloon-borne Experiment with a Superconducting Spectrometer, BESS, aims to study elementary particle/antiparticle phenomena in the early history of the Universe. The instrument has a unique feature of a thin superconducting solenoid magnet enabling a large geometrical acceptance with a horizontally cylindrical configuration. Seven balloon flights have been successfully carried out since 1993. More then 10 3 comic-ray antiproton have been unambiguously detected, and the energy spectrum has been measured with the characteristic peak at 2 GeV. The search for cosmic-ray antihelium brought the upper-limit of the antihelium/helium ratio down to < 10 -6 . To extend the highly sensitive measurements, we are planning polar long duration flights in Antarctica focusing on the very low energy antiproton spectrum towards the solar-minimum in the next decade.

Original languageEnglish
Pages (from-to)1253-1262
Number of pages10
JournalAdvances in Space Research
Issue number5
Publication statusPublished - 2002
Externally publishedYes

ASJC Scopus subject areas

  • Aerospace Engineering
  • Astronomy and Astrophysics
  • Geophysics
  • Atmospheric Science
  • Space and Planetary Science
  • Earth and Planetary Sciences(all)


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