Séminaires du DPhP: New detectors for future challenges: the Allegro EM calorimeter at the FCC-ee

par Nicolas Morange (IJCLab)

lundi 23 févr. 2026, 11:00 → 12:30 Europe/Paris

CEA Paris-Saclay

The project of the electron-positron Future Circular Collider at CERN offers a unique physics program, with a very broad coverage from the exploration of the Higgs boson properties, to BSM searches, to flavour physics and to precision electroweak measurements. Realizing the full physics potential of FCCee will require the design of new, challenging particle physics detectors. Excellent tracking, high energy resolution and particle identification capabilities are required, along with precise control over systematics. The ALLEGRO detector concept is built around a novel noble liquid  calorimeter, that is designed to fullfill the stringent requirements in the measurement of electrons, photons and jets. It uses inclined multilayer PCBs to achieve a high granularity of  a few million cells with projective geometry, suitable for particle-flow reconstruction, and aims for high electromagnetic energy resolution through a low resolution sampling term and negligible electronics noise.

This seminar will introduce the design of this next-generation calorimeter, highlight its expected performance, and show the progress on the ongoing R&D to demonstrate its feasibility.

zoom connection: https://cern.zoom.us/j/68399739111?pwd=SGErcHBQYmVLWFZTVE9jdm5xSmdEdz09