Speakers
Description
The High-Luminosity LHC (HL-LHC) will offer unprecedented opportunities for precision flavour physics, while simultaneously posing significant challenges for detector operation in extreme high-occupancy environments. Within the framework of the LHCb Upgrade II program, the Ring Imaging Cherenkov (RICH) detectors are undergoing a comprehensive redesign to cope with substantially increased luminosity up to 1.0e+34 cm-2 s-1, with higher track multiplicities and occupancy approaching those of the current generation general-purpose detectors.
This contribution presents the conceptual design and ongoing research and development activities for the RICH Upgrade II system, expected to take data during LHC Run 5, starting in 2035. The upgraded detectors will employ fast photon sensors with enhanced spatial granularity and picosecond-level time resolution, complemented by optimised optical elements to mitigate occupancy effects. Fully integrated frontend electronics providing precise time stamping will enable four-dimensional particle identification, exploiting timing information to disentangle dense event topologies.
The current status of sensor and optics development is reported, together with simulation studies driving key design choices and first results from test-beam campaigns. These results demonstrate how the targeted technological advances are essential to achieve the LHCb physics goals in the HL-LHC era.
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