SMuK 2023 – wissenschaftliches Programm
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T: Fachverband Teilchenphysik
T 143: Neutrinos VII
T 143.3: Vortrag
Donnerstag, 23. März 2023, 18:00–18:15, POT/0006
Fluorescence Time Profiles of Slow Organic and Water-Based Liquid Scintillators using a Pulsed Neutron Beam — •Matthias Raphael Stock1, Hans Steiger2, Lothar Oberauer1, David Dörflinger1, Ulrike Fahrendholz1, Manuel Böhles2, Stefan Schoppmann2,3, Luca Schweizer1, Korbinian Stangler1, and Dorina Zundel2 — 1Physik-Department, Technische Universität München — 2Johannes Gutenberg University Mainz, Institute of Physics and Cluster of Excellence PRISMA+ — 3University of California, Department of Physics, Berkeley, CA 94720-7300, USA
We performed two liquid scintillator (LS) characterization experiments using a pulsed neutron beam at the CN accelerator of INFN Laboratori Nazionali di Legnaro. At different energies ranging from 3.5 MeV to 5.5 MeV, one experiment measures the quenching factor of recoil protons while the other one measures the fluorescence time profile of recoil protons. This talk is about the time profile experiment, where we show studies of slow organic and water-based LS mixtures, which will be relevant for future neutrino detectors, e.g., Theia. Differences in the time profiles after gamma and neutron excitation would open the window to perform pulse shape discrimination and therefore advances the ability to distinguish the neutrino signal from background. This work is supported by the BMBF Verbundforschung 05H2018 "R&D Detektoren (Szintillatoren)", the DFG CRC 1258 "NDM", the DFG Clusters of Excellence "PRISMA+" and "Origins".