Upgrade of the ALICE ITS detector

Felix Reidt (on behalf of the ALICE collaboration)

Upgrade of the ALICE ITS detector

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arxiv 2111.08301 v3 pith:4R6ERMXZ submitted 2021-11-16 physics.ins-det

Felix Reidt (on behalf of the ALICE collaboration) This is my paper · ORCID

classification physics.ins-det

keywords upgradealiceduringinstallationits2statustrackingwell

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The ALICE experiment at CERN has undergone a major upgrade during the Long Shutdown 2 of the LHC during 2019-2021. A key element is the installation of the new Inner Tracking System 2 (ITS2). The new ITS2 based on CMOS Monolithic Active Pixel Sensors will significantly improve the impact parameter resolution and the tracking efficiency, especially for particles with low transverse momenta, as well as the readout-rate capability. In the following, the upgrade and its commissioning status as well installation status will be outlined.

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