Argon-42 Production for LEGEND: the search for 0??????​*

The LEGEND-1000 experiment is a ton-scale search for neutrinoless double beta decay that will consist of Germanium semiconductor detectors submerged in a liquid Argon cryogen. A leading background comes from the beta decay of ⁴²K, a daughter of ⁴²Ar, which is produced in cosmic ray collisions in the upper atmosphere. LEGEND-1000 seeks to understand the flow patterns of ⁴²Ar in the liquid, their collection on the charged surfaces of the detectors, and the resulting background from the beta decay after it penetrates the dead layer of the germanium crystal. This talk presents the first results of ⁴²Ar production at the Tandem accelerator located at the Triangle Universities Nuclear Laboratory in order to study its behavior, using the drop-off reaction of (⁴He, ⁴⁰Ar)⁴²Ar.