Radioassay data management for nEXO

Neutrinoless double beta decay (0νββ) is a hypothetical nuclear process that violates lepton number conservation. Its detection would prove that neutrinos are Majorana particles. The next-generation Enriched Xenon Observatory (nEXO), a successor to the EXO-200 experiment, aims to observe 0νββ using a liquid xenon (LXe) time projection chamber (TPC) and about 5 tonnes of xenon enriched to 90% in ¹³⁶Xe. To reach a half-life sensitivity of 1.35 × 10²⁸ years at 90% C.L. with 10 years of data taking, controlling background is a major challenge. The majority of the background comes from the detector components. To search for the appropriate radiopure materials that also satisfy mechanical, cryogenic, and other constraints, hundreds of materials have been screened for radioactivity. Such a radioassay campaign will generate a large amount of data which will be used in the design of the nEXO detector. There is, thus, a need for a tool to store the data, and to facilitate the use of the data in the design process. The nEXO Materials Database is aimed to fulfil this need. In this presentation, I will discuss the requirements for the Database, its implementation, and its performance.