Abstract
In order to fully exploit the scientific potential of the LHC, it is planned to operate the machine at a higher average instantaneous luminosity from 2026 onwards, following a 30 month-long shutdown. During this shutdown, parts of the CMS detector will be replaced and upgraded. A new silicon tracker will be installed which must maintain performance under the increased luminosity conditions. This new tracker will read out information to the Level-1 trigger at the LHC bunch crossing rate of 40 MHz. In order to do this, novel tracking modules hosting a pair of closely spaced silicon sensors bonded to a single read-out ASIC are being produced. Pairs of clusters across the sensors can be correlated to identify high transverse momentum track candidates. Only these will be sent to the Level-1 trigger, allowing for 40 MHz readout.
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James, T.O. (2019). The CMS Phase II Upgrade. In: A Hardware Track-Trigger for CMS. Springer Theses. Springer, Cham. https://doi.org/10.1007/978-3-030-31934-2_2
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