Savino, U. (2025) The ALICE ITS3 upgrade project: Latest results on monolithic pixel sensors test structures realized in a 65 nm technology. Il nuovo cimento C, 48 (3). pp. 1-7. ISSN 1826-9885
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Abstract
ALICE (A Large Ion Collider Experiment) at CERN investigates the properties of the quark-gluon plasma formed in heavy ion collisions at high energies. A crucial aspect of this research is the precise reconstruction of low momentum particles (< 1 GeV/c). The ALICE Inner Tracking System (ITS) plays a central role in this effort, it is the first large-area silicon tracker constructed entirely from Monolithic Active Pixel Sensors (MAPS). The ITS upgrade project will lead to a new detector, named ITS3, which will be equipped with three layers of sensors based on the latest 65 nm CMOS imaging process, developed by TPSCo foundry, enabling wafer-scale sensor production through advanced stitching techniques. This paper discusses the recent progress in the ITS3 project, highlighting the performance of thinned and bent sensors, the assembly process, and air cooling system. Initial test beam results match the small test structure desired characteristics, ensuring efficient detection and high spatial resolution. The first stage of project will be completed with the ITS3 installation, which is expected in LHC Long Shtudown 3 (2026-28). Commissioning and operation will follow.
| Item Type: | Article |
|---|---|
| Subjects: | 500 Scienze naturali e Matematica > 530 Fisica |
| Depositing User: | Marina Spanti |
| Date Deposited: | 19 Jun 2025 11:09 |
| Last Modified: | 19 Jun 2025 11:09 |
| URI: | http://eprints.bice.rm.cnr.it/id/eprint/23617 |
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