Computer Science – Performance
Scientific paper
Feb 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010head...11.2607y&link_type=abstract
American Astronomical Society, HEAD meeting #11, #26.07; Bulletin of the American Astronomical Society, Vol. 41, p.698
Computer Science
Performance
Scientific paper
Recent observations of cosmic ray electrons from several instruments such as ATIC, Fermi, and HESS have received considerable attention and many theoretical models have been proposed to explain their results. In January 2004, we have observed high-energy cosmic-ray electrons with PPB-BETS by a long duration balloon flight using Polar Patrol Balloon (PPB) in Antarctica. The observation was carried out for 13 days at an average altitude of 35 km. The PPB-BETS detector is an imaging calorimeter composed of scintillating fiber belts and plastic scintillators inserted between lead plates with 9 radiation lengths. The performance of the detector has been confirmed by the CERN-SPS beam tests and also investigated by Monte-Carlo simulations. From the PPB-BETS experiment, we have derived the energy spectrum of cosmic-ray electrons in the energy range from 100 GeV to 800 GeV with a pioneering work in the observation of electron arrival directions. In this talk, we present the results of high-energy electron observations with PPB-BETS.
PPB-BETS Collaboration
Torii Shingo
Yoshida Kenji
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