A Detailed FLUKA-2005 Monte Carlo Simulation for the ATIC Detector

• Main Authors: Ahn, H. S., Guzik, T. G., Gunasingha, R. M., Batkov, K. E., Christl, M., Adams, J. H., Ganel, O., Chang, J., Fazely, A. R., Bashindzhagyan, G. L.
• Format: Other/Unknown Material
• Language: unknown
• Published: 2006
• Subjects: Astrophysics; Fluka; Antarc*; Antarctica
• Online Access: http://hdl.handle.net/2060/20060047793

We have performed a detailed Monte Carlo (MC) calculation for the Advanced thin Ionization Calorimeter (ATIC) detector using the MC code FLUKA-2005 which is capable of simulating particles up to 10 PeV. The ATIC detector has completed two successful balloon flights from McMurdo, Antarctica lasting a total of more than 35 days. ATIC is designed as a multiple, long duration balloon Bight, investigation of the cosmic ray spectra from below 50 GeV to near 100 TeV total energy; using a fully active Bismuth Germanate @GO) calorimeter. It is equipped with a large mosaic of silicon detector pixels capable of charge identification and as a particle tracking system, three projective layers of x-y scintillator hodoscopes were employed, above, in the middle and below a 0.75 nuclear interaction length graphite target. Our calculations are part of an analysis package of both A- and energy-dependences of different nuclei interacting with the ATIC detector. The MC simulates the responses of different components of the detector such as the Simatrix, the scintillator hodoscopes and the BGO calorimeter to various nuclei. We also show comparisons of the FLUKA-2005 MC calculations with a GEANT calculation and data for protons, He and CNO.