Speaker
Description
The upgrade of the LHC to the High Luminosity LHC (HL-LHC) by the end of this decade will impose significant challenges on the detectors of the LHC experiments. Increased luminosity of up to $7.5\cdot10^{34}\,cm^{−2}s^{−1}$ with up to 200 simultaneous p-p interactions per bunch crossing and foreseen run-times equivalent to up to $4000\,fb^{-1}$ make it necessary to develop new detectors that can cope with the corresponding radiation damage, occupancy, and bandwidth needs. Among other detector upgrades, ATLAS will replace its entire inner tracking system with a new, all-silicon inner tracker (ITk) with a 5-layer hybrid pixel detector at its heart. This new pixel detector will feature a sensitive surface of about $13\,m^{2}$ and employ several silicon sensor technologies as well as innovative concepts like serial detector powering and evaporative CO2 cooling to unprecedented scales.
The ITk pixel project has finished its design and prototyping period and the different detector components are either in the pre-production or production phase. This contribution will give a comprehensive overview of the detector design, the overall project status and the biggest challenges towards production. It will include lessons learned from module pre-production, experience with the RD53B front-end chip, as well as first results on module loading on mechanical support structures. Recent results of system-level tests as well as the remaining project timelines will also be discussed.
| Primary experiment | ATLAS |
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