MG13 - Talk detail

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Abstract

The IceCube Observatory at the South Pole is comprised of a cubic kilometer scale neutrino telescope buried beneath the icecap and a square-kilometer surface tank Cherenkov detector array known as IceTop. IceTop covers the primary cosmic-ray energy range from about 300 TeV to EeV energies. This range includes the "knee" region and the possible transition of the origin of cosmic rays from galactic to extra-galactic sources. The combination of a surface array with the in-ice detector allows the dominantly electromagnetic signal of air showers at the surface and the coincident high-energy muon signal in the in-ice detector to be measured. The events that trigger both detectors carry information about the nuclear composition of the primary cosmic rays. Recent results about cosmic-ray spectrum and composition based on experimental data analysis and simulation will be discussed.

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