The Collider Detector at Fermilab (CDF) is a 5000 t magnetic detector built to study 2 TeV p OVER BAR p collisions at the Fermilab Tevatron. Even analysis is based on charged particle tracking, magnetic momentum analysis and fine-grained calorimetry. The combined electromagnetic and hadron calorimetry has approximately uniform granularity in rapidity-azimuthal angle and extends down to 2 degree from the beam direction. Various tracking chambers cover the calorimeter acceptance and extend charged particle tracking down to 2 mrad from the beam direction. Charged particle momenta are analyzed in a 1. 5 T solenoidal magnetic field, generated by a superconducting coil which is 3 m in diameter and 5 m in length.