EndCap module production of the ATLAS Semiconductor Tracker

ATLAS is one of the four experiments at the Large Hadron Collider at CERN. The ATLAS Semiconductor Tracker (SCT) forms a central part of the tracking system of the inner detector of the ATLAS experiment. It consists of 4 cylindrical barrel layers and 18 end-cap disks of 4088 modules in total made of single-sided p-on-n silicon microstrip detectors with about 6 million read-out channels. Most of the modules consist of 4 single-sided silicon sensors glued back to back with a 40mrad stereo angle on a support structure, and read-out by custom made ASICs based on radiation hard DMILL technology. The mass production of about 2000 SCT end-cap modules began in mid-2003 at various production sites around the world.