The BESS Program

J. W. Mitchell, K. Abe, K. Anraku, H. Fuke, S. Haino, T. Hams, M. Imori, A. Itazaki, K. Izumi, T. Kumazawa, M. H. Lee, T. Maeno, Y. Makida, S. Matsuda, H. Matsumoto, K. Matsumoto, A. Moiseev, Z. D. Myers, J. Nishimura, M. NozakiH. Omiya, J. F. Ormes, T. Sanuki, M. Sasaki, E. S. Seo, Y. Shikaze, R. E. Streitmatter, J. Suzuki, Y. Takasugi, K. Tanaka, K. Tanizaki, T. Yamagami, A. Yamamoto, Y. Yamamoto, K. Yamato, T. Yoshida, Koji Yoshimura

Research output: Contribution to journalArticle

27 Citations (Scopus)

Abstract

In nine flights between 1993 and 2002, the Balloon Borne Experiment with a Superconducting Spectrometer (BESS) has measured the energy spectrum of cosmic-ray antiprotons between 0.18 and 4.20 GeV, and the spectra of protons and helium to several hundred GeV. BESS has also placed stringent upper limits on the existence of antihelium and antiduterons. Above about 1 GeV, models in which antiprotons are secondary products of the interactions of primary cosmic rays with the ISM agree with the BESS spectrum. Below 1 GeV, BESS data suggest the presence of an additional source of antiprotons. The antiproton/proton ratios measured between 1993 and 1999, during the Sun's positive-polarity phase, are consistent with simple models of solar modulation. Results from the 2000 flight, following the solar magnetic field reversal, show a sudden increase in the antiproton/proton ratio and tend to favor a charge-sign-dependent drift model. To extend BESS measurements to lower energies, a new instrument, BESS-Polar, is under construction for a flight from Antarctica in 2004.

Original languageEnglish
Pages (from-to)31-38
Number of pages8
JournalNuclear Physics B - Proceedings Supplements
Volume134
Issue number1-3
DOIs
Publication statusPublished - Sep 2004
Externally publishedYes

Fingerprint

antiprotons
spectrometers
flight
protons
solar magnetic field
primary cosmic rays
Antarctic regions
balloons
cosmic rays
polarity
sun
energy spectra
helium
modulation
products
interactions
energy

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Cite this

Mitchell, J. W., Abe, K., Anraku, K., Fuke, H., Haino, S., Hams, T., ... Yoshimura, K. (2004). The BESS Program. Nuclear Physics B - Proceedings Supplements, 134(1-3), 31-38. https://doi.org/10.1016/j.nuclphysbps.2004.08.003

The BESS Program. / Mitchell, J. W.; Abe, K.; Anraku, K.; Fuke, H.; Haino, S.; Hams, T.; Imori, M.; Itazaki, A.; Izumi, K.; Kumazawa, T.; Lee, M. H.; Maeno, T.; Makida, Y.; Matsuda, S.; Matsumoto, H.; Matsumoto, K.; Moiseev, A.; Myers, Z. D.; Nishimura, J.; Nozaki, M.; Omiya, H.; Ormes, J. F.; Sanuki, T.; Sasaki, M.; Seo, E. S.; Shikaze, Y.; Streitmatter, R. E.; Suzuki, J.; Takasugi, Y.; Tanaka, K.; Tanizaki, K.; Yamagami, T.; Yamamoto, A.; Yamamoto, Y.; Yamato, K.; Yoshida, T.; Yoshimura, Koji.

In: Nuclear Physics B - Proceedings Supplements, Vol. 134, No. 1-3, 09.2004, p. 31-38.

Research output: Contribution to journalArticle

Mitchell, JW, Abe, K, Anraku, K, Fuke, H, Haino, S, Hams, T, Imori, M, Itazaki, A, Izumi, K, Kumazawa, T, Lee, MH, Maeno, T, Makida, Y, Matsuda, S, Matsumoto, H, Matsumoto, K, Moiseev, A, Myers, ZD, Nishimura, J, Nozaki, M, Omiya, H, Ormes, JF, Sanuki, T, Sasaki, M, Seo, ES, Shikaze, Y, Streitmatter, RE, Suzuki, J, Takasugi, Y, Tanaka, K, Tanizaki, K, Yamagami, T, Yamamoto, A, Yamamoto, Y, Yamato, K, Yoshida, T & Yoshimura, K 2004, 'The BESS Program', Nuclear Physics B - Proceedings Supplements, vol. 134, no. 1-3, pp. 31-38. https://doi.org/10.1016/j.nuclphysbps.2004.08.003
Mitchell JW, Abe K, Anraku K, Fuke H, Haino S, Hams T et al. The BESS Program. Nuclear Physics B - Proceedings Supplements. 2004 Sep;134(1-3):31-38. https://doi.org/10.1016/j.nuclphysbps.2004.08.003
Mitchell, J. W. ; Abe, K. ; Anraku, K. ; Fuke, H. ; Haino, S. ; Hams, T. ; Imori, M. ; Itazaki, A. ; Izumi, K. ; Kumazawa, T. ; Lee, M. H. ; Maeno, T. ; Makida, Y. ; Matsuda, S. ; Matsumoto, H. ; Matsumoto, K. ; Moiseev, A. ; Myers, Z. D. ; Nishimura, J. ; Nozaki, M. ; Omiya, H. ; Ormes, J. F. ; Sanuki, T. ; Sasaki, M. ; Seo, E. S. ; Shikaze, Y. ; Streitmatter, R. E. ; Suzuki, J. ; Takasugi, Y. ; Tanaka, K. ; Tanizaki, K. ; Yamagami, T. ; Yamamoto, A. ; Yamamoto, Y. ; Yamato, K. ; Yoshida, T. ; Yoshimura, Koji. / The BESS Program. In: Nuclear Physics B - Proceedings Supplements. 2004 ; Vol. 134, No. 1-3. pp. 31-38.
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T1 - The BESS Program

AU - Mitchell, J. W.

AU - Abe, K.

AU - Anraku, K.

AU - Fuke, H.

AU - Haino, S.

AU - Hams, T.

AU - Imori, M.

AU - Itazaki, A.

AU - Izumi, K.

AU - Kumazawa, T.

AU - Lee, M. H.

AU - Maeno, T.

AU - Makida, Y.

AU - Matsuda, S.

AU - Matsumoto, H.

AU - Matsumoto, K.

AU - Moiseev, A.

AU - Myers, Z. D.

AU - Nishimura, J.

AU - Nozaki, M.

AU - Omiya, H.

AU - Ormes, J. F.

AU - Sanuki, T.

AU - Sasaki, M.

AU - Seo, E. S.

AU - Shikaze, Y.

AU - Streitmatter, R. E.

AU - Suzuki, J.

AU - Takasugi, Y.

AU - Tanaka, K.

AU - Tanizaki, K.

AU - Yamagami, T.

AU - Yamamoto, A.

AU - Yamamoto, Y.

AU - Yamato, K.

AU - Yoshida, T.

AU - Yoshimura, Koji

PY - 2004/9

Y1 - 2004/9

N2 - In nine flights between 1993 and 2002, the Balloon Borne Experiment with a Superconducting Spectrometer (BESS) has measured the energy spectrum of cosmic-ray antiprotons between 0.18 and 4.20 GeV, and the spectra of protons and helium to several hundred GeV. BESS has also placed stringent upper limits on the existence of antihelium and antiduterons. Above about 1 GeV, models in which antiprotons are secondary products of the interactions of primary cosmic rays with the ISM agree with the BESS spectrum. Below 1 GeV, BESS data suggest the presence of an additional source of antiprotons. The antiproton/proton ratios measured between 1993 and 1999, during the Sun's positive-polarity phase, are consistent with simple models of solar modulation. Results from the 2000 flight, following the solar magnetic field reversal, show a sudden increase in the antiproton/proton ratio and tend to favor a charge-sign-dependent drift model. To extend BESS measurements to lower energies, a new instrument, BESS-Polar, is under construction for a flight from Antarctica in 2004.

AB - In nine flights between 1993 and 2002, the Balloon Borne Experiment with a Superconducting Spectrometer (BESS) has measured the energy spectrum of cosmic-ray antiprotons between 0.18 and 4.20 GeV, and the spectra of protons and helium to several hundred GeV. BESS has also placed stringent upper limits on the existence of antihelium and antiduterons. Above about 1 GeV, models in which antiprotons are secondary products of the interactions of primary cosmic rays with the ISM agree with the BESS spectrum. Below 1 GeV, BESS data suggest the presence of an additional source of antiprotons. The antiproton/proton ratios measured between 1993 and 1999, during the Sun's positive-polarity phase, are consistent with simple models of solar modulation. Results from the 2000 flight, following the solar magnetic field reversal, show a sudden increase in the antiproton/proton ratio and tend to favor a charge-sign-dependent drift model. To extend BESS measurements to lower energies, a new instrument, BESS-Polar, is under construction for a flight from Antarctica in 2004.

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