The CMS all-silicon tracker — strategies to ensure a high quality and radiation hard silicon detector

In December 1999, the CMS collaboration decided to use an all-silicon solution for the tracker. In total the CMS tracker implements 24328 silicon sensors covering an area of 206 m2. To control a large system of this size and ensure its functionality after 10 years under LHC condition, CMS developed an elaborate design and a detailed quality assurance program.