The micro-RWELL for future HEP challenges and beyond

Abstract The forthcoming High-Energy Physics (HEP) experiments necessitate particle detection technologies that are efficient, scalable, and compatible with industrial production. The μ-RWELL, a single-stage resistive MPGD based on sequential build-up technology, meets these demands. This contribution outlines the detector's characteristics, detailing design and testing at INFN-LNF, as well as the construction processes conducted at the ELTOS Company and CERN MPT Workshop. Our findings demonstrate that much of the detector construction can be industrialized, significantly reducing production time and costs. Notably, the development of large DLC foils for the amplification stage represents a key advancement, enabled by the acquisition of a DC-magnetron sputtering machine through a joint CERN-INFN initiative. We present test results from X-ray gun studies at LNF and particle beams at CERN's North Area, alongside preliminary outcomes from a 2023 co-production pilot test, which achieved a 90 % production yield. This marks an important step towards the industrial-scale production of larger detectors for HEP applications. In addition to technology transfer and process refinement, we pursued R&D to optimize the μ-RWELL for diverse applications, including trigger for the LHCb Phase II Muon System, fine tracking in the IDEA Muon system, and sensors for neutron detection in Homeland Security.