Göttingen 2025 – wissenschaftliches Programm
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T: Fachverband Teilchenphysik
T 49: Detectors IV (Scintillators)
T 49.6: Vortrag
Mittwoch, 2. April 2025, 17:30–17:45, VG 1.101
Characterisation of hybrid-opaque scintillators for the NuDoubt++ experiment — •Miriam Weigand for the NuDoubt collaboration — Johannes Gutenberg-Universität Mainz, Institut für Physik, 55128 Mainz, Germany
The NuDoubt++ experiment is dedicated to the advanced search for double beta plus decay (2β+), a rare nuclear disintegration process with an extremely long half-life of 1018 to 1024 years. In the Standard Model (SM), each double beta decay (2ν2β+) produces two neutrinos, but there is also the possibility of non-SM neutrino-less double beta decays (0ν2β+), which would suggest the Majorana nature of the neutrino.
Central to the NuDoubt++ effort is the development of an innovative detector concept based on a hybrid, slow and opaque liquid scintillator loaded with the 2β+-decaying isotope. The hybrid scintillator uses slow light emission to enhance the detection of the Cherenkov and scintillation light, which allows the distinction of particle types. Wax is added to create an opaque scintillator that locally confines the produced photons. A grid of Optimised WaveLength-shifting (OWL) fibres is distributed throughout the detector to collect the light and allow detailed energy deposition patterns to be reconstructed.
This talk will discuss the demonstrator setup designed to test the new detector concept and to improve the composition and interplay of the components used.
Keywords: Opaque Scintilltor; Double beta plus decay