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Measurements of Primary and Atmospheric Cosmic-Ray Spectra with the BESS-TeV Spectrometer

S. Haino·T. Sanuki·K. Abe·K. Anraku·Y. Asaoka·H. Fuke·M. Imori·A. Itasaki·T. Maeno·Y. Makida·S. Matsuda·N. Matsui·H. Matsumoto·J. W. Mitchell·A. A. Moiseev·J. Nishimura·M. Nozaki·S. Orito·J. F. Ormes·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·K. Yoshimura
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Abstract

Primary and atmospheric cosmic-ray spectra were precisely measured with the BESS-TeV spectrometer. The spectrometer was upgraded from BESS-98 to achieve seven times higher resolution in momentum measurement. We report absolute fluxes of primary protons and helium nuclei in the energy ranges, 1-540 GeV and 1-250 GeV/n, respectively, and absolute flux of atmospheric muons in the momentum range 0.6-400 GeV/c.

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S. Haino, T. Sanuki, K. Abe, K. Anraku, Y. Asaoka, H. Fuke, M. Imori, A. Itasaki, T. Maeno, Y. Makida, S. Matsuda, N. Matsui, H. Matsumoto, J. W. Mitchell, A. A. Moiseev, J. Nishimura, M. Nozaki, S. Orito, J. F. Ormes, 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, K. Yoshimura. 2004-03-31. Measurements of Primary and Atmospheric Cosmic-Ray Spectra with the BESS-TeV Spectrometer. https://doi.org/10.1016/j.physletb.2004.05.019

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