First Year Performance Paper - Section 4
4 Track reconstruction in IceCube
Reconstruction of the tracks of muons, whether of downward muons from cosmic-ray interactions in the atmosphere or neutrino-induced muons, is essential for a neutrino telescope. Pions and kaons created by interactions of cosmicrays in the atmosphere give rise both to downward atmospheric muons and to upward-moving muons from interactions of atmospheric neutrinos. Comparison of these two closely related and well-understood fluxes therefore offers an important consistency check on detector simulation and response. The abundant atmospheric muons also provide a useful beam for calibration of timing and geometry.