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SUMMARY:Revised Energy Spectra for Primary Elements\, H - Si\, above 50 Ge
 V from the ATIC-2 Science Flight
DTSTART;VALUE=DATE-TIME:20070704T194500Z
DTEND;VALUE=DATE-TIME:20070704T194500Z
DTSTAMP;VALUE=DATE-TIME:20260309T031622Z
UID:indico-contribution-401@cern.ch
DESCRIPTION:Speakers: Prof. WEFEL\, John (Louisiana State University)\nThe
  Advanced Thin Ionization Calorimeter (ATIC) long duration balloon \nexper
 iment had a successful science flight accumulating 18 days of data (12/02 
 -\n 1/03) during a single circumnavigation in Antarctica. ATIC measures th
 e energy \nspectra of elements from H to Fe in primary cosmic rays using a
  fully active \nBismuth Germanate calorimeter preceded by a carbon target\
 , with embedded \nscintillator hodoscopes\, and a silicon matrix charge de
 tector at the top.  \nPreliminary results from ATIC have been reported in 
 previous conferences.  The \nrevised results reported here are derived fro
 m a new analysis of the data with \nimproved charge resolution\, lower bac
 kground and revised energy calibration.   \nThe raw energy deposit spectra
  are de-convolved into primary energy spectra \nand extrapolated to the to
 p of the atmosphere. We compare these revised \nresults to previous data a
 nd comment upon the astrophysical interpretation of\nthe data.\n\nhttps://
 indico.nucleares.unam.mx/event/4/session/8/contribution/401
LOCATION:Merida\, Mexico Regency (Hyatt)
URL:https://indico.nucleares.unam.mx/event/4/session/8/contribution/401
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