Karlsruhe 2024 – scientific programme
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T: Fachverband Teilchenphysik
T 53: Neutrino physics 6
T 53.8: Talk
Wednesday, March 6, 2024, 17:45–18:00, Geb. 20.30: 2.058
Measurement of Proton Recoil Quenching Factors in Liquid Scintillators for Neutrino Detectors — H. Steiger1,2, •J. Firsching1, D. Dörflinger1, U. Fahrendholz1, and M. R. Stock1 — 1Physik-Department, Technische Universität München, James-Franck-Str. 1, 85748 Garching — 2Johannes Gutenberg University Mainz, Cluster of Excellence PRISMA+, Staudingerweg 9, 55128 Mainz
Several next-generation neutrino detectors, such as JUNO and JUNO-TAO, are currently under construction. They, as well as the planned THEIA observatory, are intended to break new ground in neutrino physics and achieve unprecedented energy and vertex resolution. To exploit the full potential of these detectors, a robust absolute energy scale determination for several particle species is crucial. In this talk, the measurement of neutron-induced proton recoil ionization quenching utilizing quasi-monoenergetic neutrons from the 7Li(p,n)7Be nuclear reaction is presented. Therefore, bunched proton beams with 3.5 MeV to 5.5 MeV energy provided by the INFN-LNL CN Van-De-Graaff accelerator were used. Severel novel liquid scintillation cocktails were investigated. This work is supported by the Cluster of Excellence PRISMA+ at the Johannes Gutenberg University in Mainz, the Cluster of Excellence ORIGINS, the Collaborative Research Center 1258, and the DFG Research Units 2319 and 5519.
Keywords: Neutrino Observatories of the Next Generation; Liquid Scintillation Detectors; Quenching Factors of Scintillators