For the past several years, the CDF collaboration has been upgrading its de
tector to accommodate the higher Luminosity and beam energy expected during
Run II (2001-2006) at the Tevatron p (p) over bar collider. Accelerator im
provements include increasing the instantaneous luminosity by an order of m
agnitude with respect to Run I to 2 x 10(32) cm(-2) s(-1) and increasing th
e center of mass energy from 1.8 to 2.0 TeV. The detector upgrades include
replacing the entire tracking volume, extending the muon coverage, adding a
time-of-flight system, and improving the selection capabilities of the tri
gger. The partially instrumented detector underwent a commissioning run dur
ing September/October 2000 in preparation for starting data taking in Sprin
g 2001 with the full detector. Now that Run II has been extended through 20
06. we expect to collect an integrated luminosity of 2 fb(-1) during the fi
rst two years of running and up to a total of 15 fb(-1) by the end of Run I
I. (C) 2001 Published by Elsevier Science B.V.