Speaker
Description
With its increased number of proton-proton collisions per bunch crossing, track
reconstruction at the High-Luminosity LHC (HL-LHC) is a complex endeavor. The Inner
Tracker (ITk) is a silicon-only replacement of the current ATLAS tracking system as part of
its Phase-II upgrade.
It is specifically designed to handle the challenging conditions resulting from the increase
in luminosity.
Having undergone a series of layout optimizations, the ITk pixel detector now features a
reduced radius of its innermost barrel layer, among other changes. This contribution will
discuss the evolution of the ITk design, alongside its impact on the tracking performance
and some higher-level object reconstruction and identification.
To ensure stable data-taking conditions, it is critical to manage the rate at which ITk data is
being read out. ITk information is read out for bunch crossings selected by the first level
trigger with an expected rate of 1 MHz. Recent calculations on the expected data rates at
the design frequencies will be presented, and handles to ensure rates stay below the
bandwidth thresholds will be discussed.
| Collaboration | ATLAS |
|---|
