Speaker
Description
IDEA (Innovative Detector for an Electron–Positron Accelerator) is a general-purpose detector concept for studying electron–positron collisions over a wide energy range at a future circular e⁺e⁻ collider. Its central tracking system is an integrated detector composed of a silicon-based vertex detector, a large-area silicon wrapper, and the INTREPID (INner TRacker Equipped with Particle IDentification) drift chamber (DCH). The INTREPID DCH is a helium-based, ultra-low-mass detector conceived to provide efficient tracking, high-precision momentum measurements, and excellent particle identification (PID) by exploiting the cluster counting technique.
We present the tracking and PID performance of the IDEA tracking system evaluated using full simulation studies based on the Geant4 toolkit within the Key4hep ecosystem, including the complete signal digitization and track reconstruction chain. Realistic full-event simulations are used to assess PID performance, employing dedicated algorithms to convert the Geant4 energy-deposit information into cluster number and size distributions.
The results demonstrate that cluster counting provides a PID resolution approximately a factor of two better than the traditional dE/dx method. Beam test results obtained at CERN with drift chamber prototypes using muons over a wide range of βγ are also presented and compared with the simulations.
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