Abstract: After Long Shutdown $4$ LS$4$ of the LHC the LHCb experiment expects an instantaneous luminosity up to $1.5\mathrm{x}10^{34}\mathrm{cm}^{-2}\mathrm{s}^{-1}$. This results in $300\mathrm{fb}^{-1}$ of recorded data after Run 5 and 6. To achieve the physics goals, the detector needs to be upgraded to ensure efficient tracking and particle identification. Therefore, all subdetectors are planned to be upgraded during LS4. This talk will introduce the planned upgrade and with a focus on the new downstream tracker behind the dipole magnet.
The technology of the tracking stations is under ongoing development. For the downstream tracker will be built as a hybrid tracker with scintillating fibers on the for the outer regions and monolithic pixel sensors for the central high occupancy region.
To match the detector requirements, the power consumption should be less than $150\mathrm{mW}/\mathrm{cm}^2$ and the timing in orders of $3\mathrm{ns}$. Furthermore, the overall material budget needs to be less than $2\%$ of the radiation length $\mathrm{X}_0$.
This presentation covers an overall introduction of the planned Mighty Tracker with focus on the used HV-CMOS technology and the upcoming challenges for this detector. Furthermore, the involvement of Bonn in this last Upgrade of LHCb.
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https://uni-bonn.zoom-x.de/j/66253567797?pwd=R2MrNmNCQnl4K1hSejd6VnBEYXJ2QT09
Meeting ID: 662 5356 7797
Passcode: 599591
Maike Hansen, Saime Gürbüz