Measurement of low-energy antiproton detection efficiency in BESS below 1 GeV

Y. Asaoka, K. Yoshimura, T. Yoshida, K. Abe, K. Anraku, M. Fujikawa, H. Fuke, S. Haino, K. Izumi, T. Maeno, Y. Makida, N. Matsui, H. Matsumoto, H. Matsunaga, M. Motoki, M. Nozaki, S. Orito, T. Sanuki, M. Sasaki, Y. ShikazeT. Sonoda, J. Suzuki, K. Tanaka, Y. Toki, A. Yamamoto

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

An accelerator experiment was performed using a low-energy antiproton beam to measure antiproton detection efficiency of BESS, a balloon-borne spectrometer with a superconducting solenoid. Measured efficiencies showed good agreement with calculated ones derived from the BESS Monte Carlo simulation based on GEANT/GHEISHA. With detailed verification of the BESS simulation, the relative systematic error of detection efficiency derived from the BESS simulation has been determined to be ±5%, compared with the previous estimation of ±15% which was the dominant uncertainty for measurements of cosmic-ray antiproton flux.

Original languageEnglish
Pages (from-to)170-177
Number of pages8
JournalNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Volume489
Issue number1-3
DOIs
Publication statusPublished - Aug 21 2002
Externally publishedYes

Keywords

  • Antiproton detectio efficiency
  • BESS
  • Detector simulation
  • GEANT/GHEISHA
  • KEK PS
  • Systematic error

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Instrumentation

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  • Cite this

    Asaoka, Y., Yoshimura, K., Yoshida, T., Abe, K., Anraku, K., Fujikawa, M., Fuke, H., Haino, S., Izumi, K., Maeno, T., Makida, Y., Matsui, N., Matsumoto, H., Matsunaga, H., Motoki, M., Nozaki, M., Orito, S., Sanuki, T., Sasaki, M., ... Yamamoto, A. (2002). Measurement of low-energy antiproton detection efficiency in BESS below 1 GeV. Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 489(1-3), 170-177. https://doi.org/10.1016/S0168-9002(02)00804-5