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Bonn 2020 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 32: Neutrino physics with accelerators

T 32.5: Vortrag

Dienstag, 31. März 2020, 18:00–18:15, H-HS XV

Event reconstruction in a water-based liquid scintillator test cell for Theia — •Nils Brast, Daniele Guffanti, and Michael Wurm — Institut für Physik, Johannes Gutenberg-Universität Mainz, Germany

Water-based liquid scintillator (WbLS) permits to combine the benefits of Cherenkov detectors (high transparency, directionality) with the ones of Liquid Scintillator experiments (low energy threshold, good energy resolution). WbLS is considered as target medium for the ANNIE experiment at Fermilab and next-generation neutrino experiments such as Theia. Currently, a test cell for the characterization of WbLS is set up in Mainz to study the discrimination of Cherenkov and Scintillation signals. The setup will exploit the different time and spatial signatures of Cherenkov and Scintillation photons emitted by through-going cosmic muons. Accurate timing is achieved by a system of fast PMTs and offline analysis of digitized waveforms that will allow to resolve the prompt Cherenkov signal from delayed Scintillation photons. The characteristic ring-shaped hit pattern of Cherenkov photons provides another feature for separation. In this contribution we present the methods for event reconstruction developed in Monte-Carlo studies to optimize the design of the cell.

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