LHCb beampipe and luminosity monitoring detectors near VELO

The beampipe, which had been taken out, has been installed back into the detector, together with the new luminosity monitoring detectors, installed upstream of the Vertex Locator (VELO), a LHCb sub-detector in the LHCb cavern. The new luminosity monitoring detectors are capable of measuring the luminosity and beam conditions of the Large Hadron Collider (LHC) at the interaction point of the LHCb experiment. It will enable real time monitoring of beam parameters, which is of paramount importance in order to safely operate the LHC and its experiments in the beam conditions for Run 3, and beyond, towards the High-Luminosity (HL) phase. The detector will provide both online and offline measurements with a feedback at the scale of a fraction of a second, to ensure a luminosity-leveling procedure and a real-time alarm to the LHC.