Aachen 2019 – wissenschaftliches Programm
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T: Fachverband Teilchenphysik
T 12: Astroteilchenphysik: Methoden I
T 12.7: Vortrag
Montag, 25. März 2019, 17:30–17:45, S12
Simulation of the Optics of the Imaging Air Cherenkov Telescopes IceAct with Geant4 — •Maurice Günder1, Jan Auffenberg1, Pascal Backes1, Thomas Bretz2, Erik Ganster1, Merlin Schaufel1, and Christopher Wiebusch1 for the IceCube collaboration — 1III. Physikalisches Institut B, RWTH Aachen — 2III. Physikalisches Institut A, RWTH Aachen
The Imaging Air Cherenkov Telescopes IceAct are proposed to be deployed on the surface above the IceCube Neutrino Observatory at the South Pole. With an SiPM based camera and a field of view of 12∘, IceAct is capable to observe Cherenkov light from cosmic ray air showers in order to veto atmospheric muons and neutrinos which are background sources in cosmic neutrino searches of IceCube. Furthermore, IceAct can be used to measure the composition of cosmic rays and improve the calibration of IceCube and IceTop. For these purposes a detailed wavelength dependent simulation of the optics is needed to parametrize the telescopes’ response. This simulation is done by Geant4, a general-purpose Monte Carlo simulation platform for the passage of particles through matter. We will present the results of the simulations with respect to detection efficiency, optical effects, and aberrations. The resulting optical response is parametrized in form of lookup tables that allow the efficient simulation of the signal of air showers.