Speaker
Description
The ALICE experiment is designed to collect pp, p–A, and A–A collision data provided by the LHC, to investigate the properties of strongly interacting matter under extreme conditions of temperature and energy density. Among the ALICE particle identification (PID) detectors, the High Momentum Particle Identification Detector (HMPID) is dedicated to the identification of charged hadrons. It consists of seven identical Ring Imaging Cherenkov (RICH) counters, using liquid C6F14 as the Cherenkov radiator (n ≈ 1.298 at λ = 175 nm). Cherenkov photons and charged particles are detected by a Multi-Wire Proportional Chamber (MWPC), coupled to a pad-segmented CsI-coated photocathode.
The HMPID successfully contributed to the ALICE physics program during LHC Run 1 (2009–2013) and Run 2 (2015–2018). In the ongoing LHC Run 3 (2022–2026), the HMPID has been fully integrated into the new ALICE computing framework (O2) and trigger environment. The detector performance based on Run 3 data will be presented and discussed.
