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HK: Fachverband Physik der Hadronen und Kerne

HK 12: Invited Talks II

HK 12.2: Invited Talk

Tuesday, March 21, 2023, 11:30–12:00, HSZ/0002

ALICE upgrades, status and perspectives for ALICE-3 — •Robert Muenzer for the ALICE Germany collaboration — Institut für Kernphysik, Goethe Universität Frankfurt, Deutschland

The ALICE experiment at CERN has undergone a major upgrade in preparation of LHC Run 3. A new Inner Tracking System and a system of new trigger detectors were installed while the Time Projection Chamber was upgraded with GEM-based readout chambers. The muon system was extended by the Muon Forward Tracker. In addition, the readout of all detectors and the computing infrastructure have been redesigned for continuous readout including a synchronous reconstruction. The whole system was running successfully during the first year of LHC Run 3. For the next long shutdown, a further upgrade of the inner tracking systems and an installation of a forwards calorimeter is planned. For the operation in LHC Run 5 and 6 a next-generation experiment named ALICE 3 is proposed to address unresolved questions about the quark-gluon plasma by precise measurements of heavy-flavour probes and thermal radiation. In order to achieve the best possible pointing resolution and the required particle identification performance a concept for the installation of a high-resolution vertex tracker in the beam pipe, surrounded by a silicon-pixel tracker, a combination of time-of-flight system and a Ring-Imaging Cherenkov detector is foreseen. Further detectors, such as an electromagnetic calorimeter, a muon identifier, and a dedicated forward detector for ultra-soft photons, are being studied. In this presentation, the status of the ALICE upgrades as well as the future perspectives will be presented.