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T: Fachverband Teilchenphysik
T 82: Neutrino Physics VII
T 82.1: Vortrag
Donnerstag, 3. April 2025, 16:15–16:30, VG 3.104
Cherenkov source for JUNO — •Manuel Böhles1, Tim Charissé1, Johann Martyn1, Oliver Pilarcyzk1, Hans Theodor Josef Steiger2, and Michael Wurm1 — 1Johannes Gutenberg University Mainz, Institute of Physics, Staudingerweg 7, 55128 Mainz, Germany — 2Technical University of Munich, Physics Department, James-Franck-Str. 1, 85748 Garching, Germany
For the calibration of hybrid analyses of the JUNO experiment, a Cherenkov source has been developed to gain a better understanding of the light yield and propagation of Cherenkov light in JUNO. With this knowledge, the CID method (Correlated and Integrated Directionality) for the detection of solar neutrinos, which has already been successfully applied in Borexino, can be refined. The improved resolution of the ratio of Cherenkov to scintillation light can effectively suppress background events and help in the search for the Diffuse Supernova Background (DSNB).
The fundamental idea is based on the use of a beta source with a few MeV electron energy whose electrons pass through a Cherenkov radiator. In order to improve the triggering of the detector, a coincidence source is to be used (e.g. Bi-Po), the second decay of which triggers a scintillation signal in a plastic scintillator.
The development is funded by the DFG Research Unit "JUNO" (FOR5519).
Keywords: Detector calibration; Hybrid analyses; Cherenkov/Scintillation separation