LUCID, the Luminosity Monitor for ATLAS - A Status Report

In addition to the main ATLAS detector, three smaller systems are being built to provide good coverage in the very forward region . These are closely connected to the luminosity determination in ATLAS, but are also foreseen to study forward physics. If ordered according to their distance from the ATLAS interaction point, the first system is LUCID the main luminosity monitor of ATLAS located at a distance of 17 m from the interaction point. This detector is now nearing the end of construction at CERN. The LUCID detector and its status with regards to construction, testing and installation are described in this document.