8-13 September 2013
Asilomar, California
US/Pacific timezone

Measurement of the Muon Content of Air Showers with IceTop

12 Sep 2013, 17:20
Asilomar, California

Asilomar, California

Asilomar Conference Grounds, 800 Asilomar Avenue, Pacific Grove, CA 93950-3704
Oral High-Energy Astrophysics (includes all cosmic ray physics) High Energy Astrophysics IV


Dr Javier Gonzalez (University of Delaware)


IceTop, the surface component of the IceCube detector, has mea- sured the energy spectrum of cosmic ray primaries in the range be- tween 1.58 PeV and 1.26 EeV. This measurement was done by sam- pling the lateral distribution function at distances from the shower axis where the signal does not depend strongly on systematic variations in the muon content of the air showers. Since May 2010, an improve- ment in optical modules' readout enables the detection of muons at large distances from the shower axis. Using this feature, and detailed knowledge of the detector response, one can derive the average lateral distribution function of low energy muons at large distances from the shower axis. We will discuss how the resulting muon lateral distribu- tion function compares with previous measurements and current air shower simulations.

Primary author

Dr Javier Gonzalez (University of Delaware)

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