Development of new ultra-pure, high-strength, electroformed CuCr alloys for next generation of rare event searches

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The PureAlloys project will advance our understanding in the nature of the Cosmos by enabling novel, extremely radiopure,experimental searches for Dark Matter and for neutrinoless double beta decay. Current experiments are constrained by radioactivecontamination in the detector manufacturing process, posing the main barrier in their physics discovery potential. Electroformedcopper achieves extreme radiopurity, however it is limited by its mechanical properties: high ductility and low strength. PureAlloyswill address this challenge by designing high radiopurity CuCr and CuCrTi alloys with significantly higher strength. A novel multi-scalemodelling framework enabling fast progress in designing application-specific alloys will be developed, opening the path for thedesign of new alloys in fields involving fabrication and properties enhancement where the thermodynamic and kinetic description ofthe system is crucial. PureAlloys will push the boundaries in many fields: from fundamental science to industrial applications.