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T: Fachverband Teilchenphysik

T 39: Methods of astroparticle physics III

T 39.3: Vortrag

Dienstag, 31. März 2020, 17:30–17:45, L-3.002

Supernova interactions in IceCube and reconstruction improvements — •David Kappesser and Lutz Köpke for the IceCube collaboration — Johannes Gutenberg-Universität, Mainz

The IceCube Neutrino Observatory is capable of detecting supernova neutrinos with energies around 10 MeV by observing an excess in the overall rate of the detector. This method allows for a particularly precise measurement of the supernova neutrino lightcurve. Due to IceCube's sparse Instrumentation with Digital Optical Modules (DOMs), only in rare cases, more than one Cherenkov photon is detected per supernova neutrino interaction. Still, the number of coincidences is sufficiently large in order to estimate the average neutrino energy by analyzing the energy dependent rate increase of coincidences between neighbouring DOMs. To calibrate and evaluate such a measurement and to carefully study the passage of particles through the ice and the related detector response, a Geant4 based Monte Carlo was developed and tested.