Würzburg 2018 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 91: Experimentelle Methoden der Astroteilchenphysik IV

T 91.10: Vortrag

Donnerstag, 22. März 2018, 18:45–19:00, Z6 - SR 2.011

Studies on the time-over-threshold readout of the multi-PMT optical module — •Daniel Guderian and Alexander Kappes — Institut für Kernphysik, Westfälische Wilhelmsuniversität Münster

The multi-PMT Digital Optical Module is a promising candidate for the optical sensors in the planned upgrade of the IceCube detector. It offers, amongst other properties, superior directional sensitivity and larger effective volume when compared to the current sensors. Due to tight energy budget restrictions in a multi-PMT design a power-efficient multi-level time-over-threshold (ToT) readout will be utilized.
Studies on optimizing the threshold levels have been carried out using a simulation of the ToT sampling of input signals and the subsequent deconvolution of pulses. The studies include the generation and reconstruction of single photoelectron pulses as well as the directional reconstruction of real high-energy IceCube events with complex PMT signals applying a ToT algorithm. Results characterizing an optimized setup will be presented.