Karlsruhe 2024 – scientific programme
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T: Fachverband Teilchenphysik
T 13: Detectors 2 (scintillators, other)
T 13.4: Talk
Monday, March 4, 2024, 16:45–17:00, Geb. 30.23: 2/17
Development of a Precision Characterization Facility based on a Tagged 252Cf Neutron Source for Novel Scintillation Materials — Hans Steiger1,2, •E. Fischer1, U. Fahrendholz1, L. Kayser1, L. Oberauer1, 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
The techniques used to search for dark matter particles or detect neutrinos usually require the detection of a secondary recoiling nucleus in a detector to indicate the rare collision of such a particle with a nucleus. Therefore, neutrons are ideal probes to study the response of these detection media. For this R&D work, particle accelerator-driven neutron sources are usually used, which allow neutrons and gamma radiation to be distinguished by the Time-of-Flight (ToF) method. The aim of the work presented here was to develop a setup that can be operated on a lab scale and without a particle accelerator. Therefore, a fission-neutron time-of-flight experiment was realized. Several liquid scintillators for future kt-scale neutrino detectors were already irradiated and the neutron spectrum of the 252Cf source characterized. In this talk, the current status and perspectives of this facility is presented. This work has been supported by the Cluster of Excellence PRISMA+, the Cluster of Excellence ORIGINS as well as the Collaborative Research Center Neutrinos and Dark Matter in Astro- and Particle Physics (SFB1258) and the DFG Research Units 2319 and 5519.
Keywords: Development of Novel Scintillation Media; Tagged 252Cf Neutron Source; Quenching Factors of Scintillators