Speaker
Description
The target for neutrino and dark matter experiments usually rely on liquified noble gases with extremely high grade of purity , in particular, regarding level oxygen contamination (< 100 ppt). Ultra-pure Liquid Argon (LAr) is the chosen target for the Long Baseline Neutrino Facility (LBNF) – Deep Underground Neutrino Experiment (DUNE). Brazilian in-Kind contribution for LBNF-DUNE cryogenics includes R&D, testing, engineering, design, manufacturing, commissioning, shipping and delivery of the Gaseous Argon (GAr) purification, LAr purification and Regeneration Systems for VD and HD Detectors of LBNF-DUNE.
In this talk, we will describe the conceptual Project Design of these systems and the proposals for innovative methods of LA purification, including capturing of nitrogen, which is a desirable additional feature to increase the control of the LAr purity in case of unexpected leaks and to allow the advanced use of the LAr scintillation light beyond the initial requirements of LBNF-DUNE. FAPESP Project # 2024/07128-7 and FINEP Project 01.24.0511.00 (Ref. 2345/24).