Würzburg 2018 – wissenschaftliches Programm

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

T: Fachverband Teilchenphysik

T 44: Experimentelle Methoden der Astroteilchenphysik II

T 44.3: Vortrag

Dienstag, 20. März 2018, 17:00–17:15, Z6 - SR 2.013

In situ calibration of multi-PMT optical modules in the deep ice at the South Pole — •Tabea Eder, Lew Classen, and Alexander Kappes for the IceCube collaboration — Institut für Kernphysik, Westfälische Wilhelms-Universität Münster

Based on the discovery of high-energy cosmic neutrinos by the IceCube Neutrino Observatory, a next-generation neutrino telescope at the South Pole is in the planning phase. The utilization of new detector module concepts are being considered to further increase the detector sensitivity. A promising candidate is the multi-PMT Digital Optical Module (mDOM), which provides a larger effective photocathode area and information on the photon arrival direction due to 24 3-inch PMTs in one module, in comparison to the standard single-PMT DOMs currently used in IceCube. A critical aspect of this design is the monitoring of the time calibration between the PMTs within an mDOM module after deployment in the ice. For such an in-situ measurement, the time differences between correlated signals in two PMTs caused by radioactive decays in the pressure vessel can be utilized. In the talk, the calibration method will be introduced and the current status of the studies presented.