Operational experience with the CDF Run II silicon detector

The CDF Run II Silicon Detector is the largest operating silicon detector in High Energy Physics. Its approximately 750,000 channels spread over 7 m 2 of silicon micro-strip sensors allow precision tracking and vertexing. The CDF silicon detector played a critical role in the discovery of B s mixing and is used extensively for the current Higgs Boson searches. Over the last 8 years, the detector efciency has remained stable at 95% after the Run II commissioning period. We discuss the problems with the infrastructure (cooling, power supplies, etc) that we have encountered.