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

纯合金项目将通过实现新颖的、极端放射性的、对暗物质和无中微子双β衰变的实验搜索来促进我们对宇宙本质的理解。目前的实验受到探测器制造过程中放射性污染的限制，这是它们物理发现潜力的主要障碍。电铸铜实现了极高的放射性纯度，但它受到机械性能的限制：高延展性和低强度。纯合金将通过设计具有显著更高强度的高放射性纯度的CuCr和CuCrTi合金来应对这一挑战。将开发一种新的多尺度建模框架，使设计特定用途的合金取得快速进展，为涉及制造和性能改进领域的新合金设计开辟道路，在这些领域，体系的热力学和动力学描述至关重要。纯合金将在许多领域实现突破：从基础科学到工业应用。

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.