Aachen 2019 – scientific programme

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T: Fachverband Teilchenphysik

T 11: Neutrino-Astronomie I

T 11.8: Talk

Monday, March 25, 2019, 17:45–18:00, S10

Topological Track Reconstruction in Liquid Scintillator Neutrino Detectors for GeV Events — Caren Hagner, •David Meyhöfer, Henning Rebber, and Björn Wonsak for the JUNO collaboration — Institut für Experimentalphysik, Uni Hamburg

In the current era of neutrino physics, detectors tend to be demanding for more target volume and higher energy resolution. The greater volume and more readout channels make event reconstruction and background rejection challenging. An example for this development is JUNO, which is currently being constructed in China. The Topological Track Reconstruction is being tested and enhanced with simulations from said detector. It is able to provide a 3D light emission density distribution, based on isotropically emitted, unscattered scintillation photons. Hence one will obtain the differential energy loss (dE/dx), which can be used for background rejection.

For high energy events in the range of GeV this yields tremendous potential. Especially the impact of decay product signals from ⁹Li and ⁸He can be tackled. By determining the differential energy loss (dE/dx) the volume potentially containing background signals can be minimized. This reduces the dead time of the detector. The talk will primary focus on the differential energy loss (dE/dx) algorithm with the Topological Track Reconstruction in the high energy regime.