Ring-imaging Cherenkov (RICH) detectors combine a gaseous Cherenkov radiator, optical system and single-photon detector array to perform particle identification (PID) in the LHCb experiment. Beyond the successful implementation and operation of current and previous systems, new developments in RICH detector design, single-photon sensors and front-end readout electronics remain key to achieving optimal PID performance.  In particular, the addition of order 100 ps time information is a powerful tool to suppress out-of-time background. This talk will outline the main design considerations to satisfy the space and time requirements of RICH detectors. Technologies including readout electronics with the novel FastRICH ASIC, multi-anode PMTs and silicon photomultipliers at cryogenic temperatures will be discussed, based on recent progress and beam tests at the CERN PS and SPS facilities and in the context of the upcoming RICH detector upgrades.

Coffee will be served at 10:30