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T: Fachverband Teilchenphysik

T 74: Hochenergie-Neutrinophysik 2

T 74.3: Talk

Wednesday, March 26, 2014, 17:20–17:35, P3

Mitigation of systematic uncertainties in IceCube/PINGU — •Martin Jurkovič and Elisa Resconi for the IceCube collaboration — Technische Universität München, Excellence Cluster Universe, Boltzmannstr. 2, 85748 Garching, Germany

IceCube with its low energy in-fill extension DeepCore is a neutrino telescope located at the geographical South Pole. This detector setup detects neutrinos with energies above ∼10 GeV indirectly via Cherenkov radiation emitted along the traces of charged secondary particles created in neutral/charged current week interactions. Cherenkov light is registered by 5160 photomultiplier tubes buried deep in the Antarctic ice. Aiming for precision measurements with current setup and future extensions systematic uncertainties have to be reduced. The main sources of systematic uncertainties are the ice properties and the optical acceptance of the digital optical modules. Calibration improvement is not only mandatory for the planed low energy extension, the PINGU project, but current setup will gain as well in opening the doors to e.g. precision measurement of neutrino oscillation parameters. In this talk I will discuss the development of two possible ways for calibration improvements (a) an in-situ self-calibrated light source and (b) electrons from stopped muons, so called Michel electrons as source of Cherenkov light with known energy profile.