Abstract
The Sanford Underground Research Facility (SURF) will host the Deep Underground Neutrino Experiment (DUNE), an international multi-kiloton Long-Baseline neutrino experiment that will be installed about a mile underground in Lead, SD. In the current configuration four cryostats will contain a modular detector and a total of 68,400 tons of ultrapure liquid argon, with a level of impurities lower than 100 parts per trillion of oxygen equivalent contamination. The Long-Baseline Neutrino Facility (LBNF) provides the conventional facilities and the cryogenic infrastructure to support DUNE. The system is comprised of three sub-systems: External/Infrastructure, Proximity and Internal cryogenics. An international engineering team will design, manufacture, commission, and qualify the LBNF cryogenic system. This contribution presents the modes of operations, layout and main features of the LBNF cryogenic system. The expected performance, the functional requirements and the status of the design are also highlighted.
Highlights
The Sanford Underground Research Facility (SURF) will host the Deep Underground Neutrino Experiment (DUNE), an international multi-kiloton Long-Baseline neutrino experiment that will be installed about a mile underground in Lead, SD
The Deep Underground Neutrino Experiment (DUNE) collaboration and the Long-Baseline Neutrino Facility (LBNF) are developing the detectors and infrastructure for a multi-kiloton Long-Baseline neutrino experiment to be located at the Sanford Underground Research Facility (SURF) in Lead, SD, USA
The LBNF/DUNE installation includes four cryostats and the associated cryogenic systems necessary to receive, transfer, store, and purify the large quantity of liquid argon (LAr) required by the experiment, as well as the liquid nitrogen (LN2) refrigeration system needed to re-condense the boiloff gaseous argon (GAr) and the system to cool down the cryostat and the detectors [3]
Summary
The Deep Underground Neutrino Experiment (DUNE) collaboration and the Long-Baseline Neutrino Facility (LBNF) are developing the detectors and infrastructure for a multi-kiloton Long-Baseline neutrino experiment to be located at the Sanford Underground Research Facility (SURF) in Lead, SD, USA. The LBNF/DUNE installation includes four cryostats and the associated cryogenic systems necessary to receive, transfer, store, and purify the large quantity of liquid argon (LAr) required by the experiment, as well as the liquid nitrogen (LN2) refrigeration system needed to re-condense the boiloff gaseous argon (GAr) and the system to cool down the cryostat and the detectors [3]. To qualify the technologies for the cryogenic system, the cryostats, and the detectors, a strong prototyping effort is ongoing [4].
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