Radiation hardness experience with the CDF/Dط Silicon vertex detectors

The two Tevatron experiments, CDF and Dط, have been taking data with their silicon detectors since the beginning of 2002. Up to September 2006, the Tevatron has delivered an integrated luminosity of almost 2 fb - 1 . Both experiments continuously monitor their detectors for silicon sensor damage due to radiation. These results allow both experiments to make predictions of the lifetime for their silicon detectors.