SMuK 2023 – scientific programme

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T: Fachverband Teilchenphysik

T 143: Neutrinos VII

T 143.1: Talk

Thursday, March 23, 2023, 17:30–17:45, POT/0006

Development of novel water-based liquid scintillator with pulse-shape discrimination capabilities — •Hans Theodor Josef Steiger^{1, 2}, Matthias Raphael Stock³, Manuel Böhles², David Dörflinger³, Ulrike Fahrendholz³, Daniele Guffanti⁴, Meishu Lu³, Lothar Oberauer³, Andreas Steiger³, Michael Wurm^{1, 2}, and Dorina Zundel² — ¹Cluster of Excellence PRISMA+ — ²Johannes Gutenberg-Universität Mainz — ³Technische Universität München — ⁴Università degli Studi di Milano-Bicocca

Future hybrid detectors in the field of neutrino physics have to combine high-resolution energy determination down to low thresholds by scintillation light detection and directional reconstruction with the help of Cherenkov radiation. The spectrum of potential applications is broad, ranging from long-baseline oscillation experiments to the measurement of low-energy solar neutrinos. One possible detector medium for these next-generation detectors is Water-based Liquid Scintillator (WbLS). Here, organic scintillators are dissolved colloidally in small quantities in highly pure water with the aid of surfactants. In this talk, a novel WbLS (based on Triton X-100) will be presented. Particular attention will be paid to its key properties, such as micelle size, scattering length and transparency. In addition, a study of its light yield as well as pulse-shape discrimination capabilities will be presented. This work has been supported by the Clusters of Excellence PRISMA+ and ORIGINS, the DFG Sonderforschungsbereich 1258 as well as the Bundesministerium für Bildung und Forschung (Verbundprojekt 05H2018: R&D Detectors and Scintillators).