Upgrade of the ALICE ITS detector
Felix Reidt (on behalf of the ALICE collaboration)
TL;DR
The paper discusses the upgrade of the ALICE Inner Tracking System 2 (ITS2) with CMOS sensors, enhancing tracking precision, efficiency, and readout speed for better particle detection at CERN.
Contribution
It presents the design, installation, and commissioning of the new ITS2 detector based on CMOS Monolithic Active Pixel Sensors, a significant upgrade over previous systems.
Findings
Improved impact parameter resolution and tracking efficiency.
Enhanced readout-rate capability for high-luminosity conditions.
Successful installation and commissioning of the new ITS2.
Abstract
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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Taxonomy
TopicsParticle Detector Development and Performance · High-Energy Particle Collisions Research · Particle physics theoretical and experimental studies