Münster 2017 – wissenschaftliches Programm

Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe

T: Fachverband Teilchenphysik

T 60: Kosmische Strahlung 5

T 60.3: Vortrag

Dienstag, 28. März 2017, 17:20–17:35, H 3

Analysis of Muon Ranges in Ice — •Tobias Hoinka for the IceCube collaboration — Technische Universität Dortmund, Deutschland

The IceCube Observatory is a neutrino detector located at the South Pole instrumenting a volume of about one cubic kilometer. Atmospheric muons produced in cosmic ray interactions amount for most of the events triggered in the observatory at a trigger frequency of about 3000 Hz. Although usually considered as background in the search for neutrinos, these events also provide a high statistics source of information about the cosmic ray flux. As muons lose their energy gradually along their tracks, the distance travelled in ice can be used to backtrace their original energy. The aim of this work is to calculate a depth spectrum of muons observed by IceCube. To achieve that, events containing stopping muons are selected with high precision using machine learning techniques. For these events the stopping depth and multiplicity is estimated and a spectrum of their ranges is extracted. Using this procedure, muon ranges from about 1.5 km to 30 km, corresponding to energies of about 400 GeV to 1 PeV, can be identified.