Göttingen 2025 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 49: Detectors IV (Scintillators)

T 49.1: Vortrag

Mittwoch, 2. April 2025, 16:15–16:30, VG 1.101

Performance of Large Area Liquid Scintillator Detectors with Wavelength-shifting Optical Modules — •Andrés Krolla for the SHiP-SBT collaboration — ALU Freiburg, Physikalisches Institut, 79104 Freiburg (DE)

For the mitigation of background events caused by deep inelastic scattering of muons and neutrinos, a large volume tagger system is being developed. Main requirements are accurate timing information and positional reconstruction. The detector design is organic liquid scintillator based and uses immersed Wavelength-shifting Optical Modules for light collection. Of special interest is the efficiency and quality of the light collection depending on the choice of inner lining materials, which can be diffusely or specularly reflecting. Light yield heavily influences the positional reconstruction and requirements on data acquisition. Light yield measurements from detectors with barium-sulfate paint, PTFE or aluminum reflector foil coatings as well as untreated metal surfaces will be compared.

Keywords: Muon; SHiP; Tagger; Scintillator; Dark Matter