Speaker
Description
The Deep Underground Neutrino Experiment (DUNE) is a long baseline neutrino experiment currently under construction. The upstream target of the Near Detector Complex is the Liquid Argon Near Detector (ND-LAr) designed to measure neutrino interactions before oscillation effects are large. These measurements, in conjunction the Far Detector, will enable the determination of neutrino oscillation parameters with unprecedented precision. A prototype for ND-LAr, the 2x2 Demonstrator, was developed to demonstrate the capabilities of ND-LAr technology. This detector features four pixelated modules, like the ones used in ND-LAr, and sits on-axis to the NuMI neutrino beam in the MINOS Underground Cavern at Fermi National Accelerator Laboratory. In Summer 24’, the 2x2 observed the first neutrino interactions by a DUNE detector. Following this run the 2x2 had a dedicated run using calibration sources to inform future beam studies and ND-LAr.
Four tests were performed in run 2, an Americium-Beryllium neutron source, gamma-emitting isotopes generating a spectrum ranging from 0.511 MeV to 1.836 MeV, Rn220 source injected into the liquid volume, which produced a spectrum of alpha and beta particles, and a Deuterium-Tritium Generator created a spectrum of neutrons peaking at 14 MeV. This talk will present preliminary findings and results from these tests.
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