LEGEND-1000 Reentrant Tube Validation Campaign Results
ORAL
Abstract
LEGEND-1000 aims to search for neutrinoless double beta decay in Ge-76 with a half-life sensitivity beyond 1028 years at the tonne scale. Achieving this requires extreme radiopurity for all employed materials, particularly near the detectors. For LEGEND-1000, this entails the construction of a massive 6-meter-tall segmented thin-walled copper-stainless steel Reentrant Tube that creates an impermeable barrier between an inner volume filled with radioquiet underground sourced liquid argon and outer volume filled with atmospherically sourced liquid argon. These requirements mean that the Reentrant Tube represents a novel component that poses significant engineering and material challenges. In this talk, we will present results from the LEGEND-1000 comprehensive validation campaign, including hydrostatic tests, finite element simulations and background studies that stress-tested our proposed design, and discuss the path forward to deployment in LEGEND-1000.
*This work is supported by the U.S. DOE and the NSF, the LANL, ORNL and LBNL LDRD programs; the European ERC and Horizon programs; the German DFG, BMBF, and MPG; the Italian INFN; the Polish NCN and MNiSW; the Czech MEYS; the Slovak RDA; the Swiss SNF; the UK STFC; the Canadian NSERC and CFI; the LNGS and SURF facilities.
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Presenters
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Alexander F Leder
- Los Alamos National Labratory