Speaker
Description
The low-energy physics program of the Deep Underground Neutrino Experiment (DUNE) requires precise calibration of scintillation light production and detection in large Liquid Argon Time Projection Chambers (LArTPCs). Neutron-induced scintillation provides an excellent calibration handle at the MeV energy scale, relevant for supernova neutrinos, radiological backgrounds, and neutron capture tagging. This report summarizes the current low-energy calibration strategy of the DUNE collaboration, with emphasis on recent results from a pulsed neutron source campaign performed at the Vertical Drift ColdBox test facility at CERN. Detailed comparisons between data and simulation demonstrate good agreement in light yield and timing, validating the modeling framework. In parallel, a dedicated neutron data acquisition campaign on the large-scale Vertical Drift prototype is currently underway, and its status and preliminary results will also be reported.
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