Séminaires du DPhP: Maximum Information Crystal Calorimetry for future Higgs Factories

par Marco Lucchini (INFN and University of Milano-Bicocca), Marco Toliman Lucchini (INFN & University of Milano-Bicocca)

lundi 16 févr. 2026, 11:00 → 12:30 Europe/Paris

CEA Paris-Saclay

The European Strategy for Particle Physics has identified an electron–positron Higgs factory as the highest-priority future collider to address the fundamental open questions in particle physics. In response, the international community has launched coordinated R&D efforts to assess the feasibility of such a facility, define physics-driven detector requirements, and develop next-generation particle detectors, with calorimetry playing a central role.

In this context, homogeneous crystal calorimeters have a long tradition of delivering excellent energy resolution for electromagnetic particles and represent a compelling alternative to sampling calorimeter technologies. A novel hybrid dual-readout calorimeter concept, consisting of a homogeneous crystal electromagnetic section followed by a fiber-based hadronic section, is being proposed as a cost-effective solution for the IDEA detector. Simulation studies predict an energy resolution of 3%/√E for electromagnetic particles, 27%/√E for neutral hadrons, and about 5% for 50 GeV jets—meeting a key performance benchmark for future colliders.

The combination of dual-readout capabilities, enhanced spatial granularity, and O(20) ps timing resolution enables a transition toward so-called 6D calorimetry, in which not only the energy but also detailed spatial and temporal information is exploited to characterize shower development. Ongoing design optimization, R&D, and prototyping activities aim to demonstrate the technical feasibility and performance potential of this approach.

zoom connection: https://cern.zoom.us/j/67425097284?pwd=06D9iC1eKbsydGdX6ybZTgUv18vAJf.1