Speaker
Description
The High-Luminosity phase of the LHC (HL-LHC), scheduled to begin operation in 2030, will provide an instantaneous luminosity of up to 7.5x10^34 cm^-2c s^-1. This will result in an average of 200 simultaneous interactions per bunch crossing, significantly increasing the vertex density and creating major challenges for event reconstruction.
To mitigate pile-up in the forward region and enable per-bunch luminosity measurements, the High Granularity Timing Detector (HGTD) will be installed between the tracker and calorimeter. The HGTD will consist of 8032 modules, each comprising two Low Gain Avalanche Detector (LGAD) sensors bump-bonded to dedicated ASICs.
To evaluate the performance of the detector components, several test beam campaigns were carried out at the CERN SPS and DESY facilities. This contribution presents recent results from hybrid and full modules prototypes, including measurement of hit efficiency and time resolution.