Speaker
Description
A new inner tracking system (ITS2) with monolithic active silicon pixel sensors has been successfully installed and is operated for the ALICE experiment at Run 3. For further improvement of the inner layers of the tracking system (ITS3), wafer-scale bent pixel sensors are under development based on the flexibility of the silicon sensor of about 30 µm thickness. The wafer-scale sensor can be produced using the stitching technique. In addition, the material budget will be significantly reduced by cooling with airflow and supporting with carbon form so that the pointing resolution will be improved. This upgrade will help new measurements of heavy-flavor hadrons and electromagnetic probes. In this talk, we will report on the status of sensor development, performance tests of bent sensors, and other studies.
