Aachen 2019 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 95: Neutrinos: Myon-Rekonstruktion

T 95.2: Vortrag

Donnerstag, 28. März 2019, 16:20–16:35, H11

Topological Track Reconstruction in Liquid Scintillator Neutrino Detectors for MeV Events — •Henning Rebber, Caren Hagner, Björn Wonsak, David Meyhöfer, Malte Stender, and Felix Benckwitz for the JUNO collaboration — Universität Hamburg

Neutrino detectors like the JUNO experiment in China demand for an unprecedented energy resolution while pushing the fiducial mass of liquid scintillator to ever higher dimensions. This complicates the tasks of event reconstruction and background reduction. For widespread events, like e.g. high energy (∼GeV) muons, current developments in the topological track reconstruction provide a 3D light emission density distribution based on isotropically emitted, unscattered scintillation photons. The method gives access to a particle’s differential energy loss dE/dx and can help in the essential task of background rejection.

But also for low energy events in the signal range (∼MeV) - although comparatively point-like - the topological features hold valuable information which can be used for particle discrimination. Electron events can partly be separated from positron and gamma events. The current status of this study is presented. This work is supported by the DFG.