THE CDFII SILICON TRACKING SYSTEM

The CDFII silicon tracking system, SVX, for Run II of the Fermilab Tevatron has up to 8 cylindricals layers with average radii spanning from ~(1.5 to 28.7) cm, and lengths ranging from ~(90 to 200) cm for a total active-area of ~6 m² and ~ 7.2 × 10⁵ readout channels. SVX will improve the CDFII acceptance and efficiency for both B and high-Pt physics dependent upon b-tagging. Along with the description of the SVX we report some alignment survey data from the SVX assembly phase and the actual status of the alignment as it results from the offline data analysis. The problems encountered are also reviewed.