Karlsruhe 2024 – wissenschaftliches Programm
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T: Fachverband Teilchenphysik
T 39: Detectors 4 (calorimeters)
T 39.8: Vortrag
Dienstag, 5. März 2024, 17:45–18:00, Geb. 30.23: 2/1
Optimizing the design for a Noble-Liquid-based calorimeter for FCC-ee — •Martina Koppitz1,2, Nikiforos Nikiforou2, Arno Straessner1, Brieuc Francois2, and Martin Aleksa2 — 1TU Dresden (Germany) — 2CERN (Switzerland)
The Future Circular Collider (FCC) is currently the most promising candidate for flagship experiments for the era after the LHC. With a circumference of 91 km, it promises unprecedented performance for potentially a lepton collider (FCC-ee) implementation followed by a hadron collider stage (FCC-hh). The broad physics program of the FCC-ee, spanning from high precision measurements around the Z-pole to direct Higgs production, relies strongly on the performance of calorimeters with a focus on highly-granular devices optimized for particle flow methods. Due to the outstanding operation in various previous and current experiments, noble liquid calorimetry solutions have been adapted for the electromagnetic calorimeter of the FCC-ee. The current design of the ALLEGRO (A Lepton coLlider Experiment with highly Granular calorimetry Read-Out) detector involves a sampling calorimeter comprising 1536 cylindrically-stacked lead absorbers and readout electrodes with liquid argon as active material. The baseline geometry is being tested in simulations to optimize the energy and angular resolution as well as the particle identification performance. Special focus is given to the pi0 and photon identification capabilities as a function of the number of layers in the radial direction and the cell granularity in the theta and phi directions.