May 19 – 23, 2019
Europe/Madrid timezone

LEGEND: Next-Generation Neutrinoless Double-Beta Decay Search in Germanium-76

Not scheduled


Matthew Green (NC State University)


The LEGEND Collaboration was recently formed with the aim of combining of the successes of the GERDA Experiment and the Majorana Demonstrator with newly-developed technologies in a ton-scale, germanium-based experiment. The LEGEND Collaboration has established a phased deployment scheme: an initial 200-kg array (LEGEND-200), deployed in the repurposed GERDA cryostat and shielding infrastructure at LNGS, followed by a 1000-kg array (LEGEND-1000) in a newly-constructed liquid cryogen shield and veto. This phased approach allows for the rapid construction of a world-leading experiment with half-life sensitivities in excess of 10^27 yrs at modest cost, followed by a nearly-background-free experiment with 10 t-y exposure, yielding detection sensitivity for half-lives in excess of 10^28 yrs. The plans for the design and construction of LEGEND-200 and LEGEND-1000 will be discussed, with emphasis on the design choices and technological development that will allow for improvement upon the backgrounds already demonstrated in GERDA, the lowest of any 0vBB experiment to date.

Primary author

Matthew Green (NC State University)

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