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Bonn 2020 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 32: Neutrino physics with accelerators

T 32.3: Vortrag

Dienstag, 31. März 2020, 17:30–17:45, H-HS XV

Application of the Topological Track Reconstruction to an idealised water-based liquid scintillator detector as study for TheiaFelix Benckwitz, Caren Hagner, David Meyhöfer, Henning Rebber, •Malte Stender, and Björn Wonsak — Universität Hamburg, Institut für Experimentalphysik

The Topological Track Reconstruction (TTR) was developed for unsegmented liquid scintillator detectors like JUNO and performs well in reconstructing track and point-like events in pure liquid scintillator. A next step is the application of the TTR to water-Cherenkov detectors like ANNIE and, in view of Theia, also to water-based liquid scintillator to exploit the advantages of both scintillation and Cherenkov light. Scintillation yields a high number of photons for determining the dE/dx, whereas Cherenkov light gives a handle for the particle identification via its event signature and a more precise event topology due to better time information. Furthermore, a high potential lies in the usage of newly developed photodetectors to max out the reconstruction’s performance. The Large Area Picosecond Photodetectors (LAPPDs) feature a good spatial resolution of ∼ 1 mm and an excellent time resolution of ∼ 0.1 ns compared to the few nanoseconds PMTs typically achieve.
This contribution introduces the basic principles of the TTR and the application of the TTR to an idealised detector, which features a maximum coverage with LAPPDs and an active volume of water-based liquid scintillator. Therefore, also the detector simulation and the first results of the TTR are shown. This work is supported by the BMBF.

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