Speaker
Description
The electron–positron phase of the Future Circular Collider (FCC-ee) aims to deliver electroweak precision measurements at an unprecedented level and to open new windows for physics beyond the Standard Model through rare processes and indirect signatures. Meeting these requirements demands detector technologies that go significantly beyond the state of the art. ALLEGRO is a proposed detector concept specifically designed for FCC-ee, with a strong focus on innovative calorimetry solutions.
The calorimeter design, pursued within the DRD Calo Collaboration, introduces straight, multilayer readout electrodes that achieve fine segmentation. This innovation enables advanced reconstruction methods, such as particle flow and machine-learning algorithms, and represents a significant step beyond traditional noble liquid calorimeters. Prototype measurements with custom PCBs, supported by detailed simulations, demonstrate both feasibility and performance potential.
The mechanical R&D program introduces additional innovations: absorber plates, support structures, and spacers are being optimized not only for robustness and manufacturability but also for maximizing compactness — critical aspects for integration in a precision FCC-ee detector. These studies directly feed into the design of the first large-scale beam-test prototype now in preparation.
The ALLEGRO geometry, digitization, and reconstruction chain is fully integrated into the key4hep software framework, enabling comprehensive end-to-end simulations in the FCC-ee environment. This provides a powerful platform for assessing detector performance, benchmarking reconstruction algorithms, and guiding design optimization.
The contribution will highlight the unique aspects of the ALLEGRO calorimeter R&D — its electrode design, mechanical solutions, and software integration — and will present the expected performance in the FCC-ee context.
| Position | Researcher |
|---|---|
| Affiliation | Charles University |
| Country | Czechia |