Speaker
Description
XLZD will operate at an unprecedented scale. New sensitivity requirements combined with the scale-up in detector mass demand significantly stricter radiopurity requirements and far more rigorous tracking and analysis of background contributions from detector construction materials. Existing tools from predecessor experiments require significant updating to manage the logistical demands of XLZD.
This poster will present the XLZD material screening database and background budget calculator - a centralised system designed to manage the full scope of radiopurity screening data. The database stores material properties and assay results, tracks sample locations and states for radon plate-out calculations, and links detector components to Geant4 simulations for background activity scaling. We demonstrate the full pipeline using existing assay results and preliminary XLZD simulations, quantifying the contribution of each component to the total background budget. The system is live on King’s College London servers and, through an intuitive interface, acts as a searchable database for assay results and sample status, directly informing procurement and design decisions. Together, these tools give XLZD the logistical and analytical infrastructure needed to meet the background requirements for the next generation of rare event observatories.