SMuK 2023 – wissenschaftliches Programm
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T: Fachverband Teilchenphysik
T 146: DAQ Systems, Exp. Methods
T 146.5: Vortrag
Donnerstag, 23. März 2023, 18:30–18:45, POT/0106
Detection of Low-Energy Antineutrinos with Liquid-organic Time Projection Chambers — Marike Ellerbroek1, Malte Göttsche1,2, Niklas Herrmann1, •Thomas Radermacher1,2, Stefan Roth1, and Yan-Jie Schnellbach1,2 — 1RWTH Aachen University - Physics Institute III B, Aachen, Germany — 2RWTH Aachen University - Nuclear Verification and Disarmament, Aachen, Germany
The region of antineutrino energy of a few MeV is of special interest for physics research and for the application of antineutrino-monitoring in the nuclear safeguards regime. Typically, scintillation detectors are used to detect these low-energy antineutrinos via the inverse beta decay (IBD) by reconstructing the time-correlated light signals of the positron annihilation and the neutron capture. A novel detection concept utilizing a time projection chamber (TPC) filled with an organic liquid (LOr) could enable a background-minimized detection of the antineutrino since it allows the reconstruction of all final state particles in the IBD event. From the positron track the antineutrino's initial energy and its vertex can be determined. If the energy deposition of the neutron-induced proton recoils can be detected it offers the possibility to reconstruct the antineutrino direction on an event-by-event basis. We are investigating the IBD signature with a Geant4-based simulation together with a subsequent modelling of the electron drift. Additionally, we are working on prototype measurements and simulations to study the feasibility of such a LOr-TPC. This talk presents the status of our studies.