Orateur
Description
The Upgrade II of the LHCb experiment is proposed for the long shutdown 4 of the LHC. The upgraded detector will operate at a maximum luminosity of 1.5×1034 cm-2 s-1, with the aim of reaching a total integrated luminosity of ∼300 fb-1 over the lifetime of the HL-LHC. The collected data will allow the full exploitation of the flavour physics capabilities of the HL-LHC, probing a wide range of physics observables with unprecedented accuracy. Among these, unique sensitivities are expected for the measurement of CKM phases and charm CP violation, as well as in rare heavy-quark decays.
To achieve this ambitious programme, the current detector performance must be maintained at the expected maximum pile-up of ∼40, and even improved in certain specific areas. To meet this challenge, it is planned to replace all existing spectrometer components to increase the granularity, reduce the amount of material in the detector and exploit the use of new technologies, including precision timing on the order of tens of picoseconds. Following the approval of a framework TDR and physics case document, detailed discussions on detector scenarios, institutional participation and funding are now underway, with the aim of starting the subdetector TDR phase immediately after.
The presentation will review the key points of the physics programme and the main options of the detector design.
