Speaker: Livio Calivers (University of Bern) – Title: Light Detection for Modular Liquid Argon Neutrino Detectors: From Concept to Beam Data in the DUNE Near Detector
January 8 @ 4:00 pm - 5:00 pm
Research Progress Meeting
Date: January 8, 2026
Time: 4:00- 5:00 pm
Location: Sessler Conference Room- 50A-5132 [In-Person and HYBRID]
Speaker: Livio Calivers, University of Bern
Title: Light Detection for Modular Liquid Argon Neutrino Detectors: From Concept to Beam Data in the DUNE Near Detector
Abstract: The Deep Underground Neutrino Experiment (DUNE) aims to perform precision measurements of neutrino oscillations, which require stringent control of systematic uncertainties at the Near Detector. A major challenge arises from the severe interaction pile-up in liquid-argon time projection chambers operating near the origin of the intense neutrino beam. This talk describes how fast scintillation-light detection is exploited to enhance event reconstruction and interaction timing in the modular Liquid Argon Near Detector (ND-LAr). The design of the ArCLight system is presented—a fully dielectric, SiPM-based light detector integrated directly into the TPC drift field, providing efficient photon collection with minimal inactive material. Results from the DUNE 2×2 Demonstrator operated in the NuMI beam at Fermilab include the observation of neutrino interactions and a demonstrated sub-4 ns timing resolution, sufficient to resolve the accelerator bunch structure and enable in-spill interaction separation.
https://lbnl.zoom.us/j/98854322464?pwd=K2tKUm1VZjRlV1J5RHE3cXdHQzRxdz09
Meeting ID: 988 5432 2464
Passcode: 142239