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

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 نشر من قبل Youichi Asaoka
 تاريخ النشر 2001
  مجال البحث فيزياء
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 تأليف Y. Asaoka




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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 $pm$5%, compared with the previous estimation of $pm$15% which was the dominant uncertainty for measurements of cosmic-ray antiproton flux.



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