Speaker
Description
The European Strategy for Particle Physics identified an electron-positron Higgs factory as the highest priority next collider. From a calorimetry point of view, precision measurements at these accelerators require excellent hadronic energy resolution ($\sim \frac{30\%}{\sqrt{E}}$), especially in multi-jet events, to successfully separate Z, W, and Higgs decays.\
The Dual-Readout (DR) technique, which simultaneously measures a scintillating and Cherenkov signal, is very efficient in compensating for event-by-event electromagnetic fraction fluctuations.\
In Pavia, a prototype of a fibre DR calorimeter, the High-resolution highly granular Dual-Readout demonstrator (HiDRa), based on stainless-steel capillary tubes, was built and then tested at CERN in late September 2025. This demonstrator consists of a central highly granular part read out by SiPMs and a peripheral zone read out by PMTs.\
Within the HiDRa collaboration, a dedicated data-analysis effort is underway to evaluate the prototype performance and compare it with the requirements of future accelerators.
