CDF II integrated calorimetry environment

The Run IIa integrated calorimetry environment of CDF II comprises: sampling scintillator calorimeters, e.m. preshower and shower-maximum detectors (gas based in the central, scintillator based in the forward), crack-filler detectors, radioactive source calibration systems, light pulse calibration systems, dedicated triggers for critical low energy calibrations, new FEE, a Windows NT slow control system, the master online-offline Oracle Database and an online data validation framework, distilled over the previous years of CDF data taking (now based on the CERN Root). The preexisting central calorimeters are the bridge between the energy and time measurement of the past and current physics runs. New forward calorimeters (the "plugs"), built with the modern scintillating tile-fiber technique, replaced the old gas calorimeters. Together they form an integrated, general-purpose calorimetry system which has been successfully commissioned with the 2000-2001 collider data. The time measurement, before present only in the central hadron, has now been extended the plug hadron calorimeter. To complete the integration in Run IIb (>2004), the central gas preshower will be replaced with a tile-fiber detector and the time information will be added also to the e.m. calorimeters. Select jet energy topics are described which show how the CDF II calorimetry has the capability to improve the measurement of the W and the top-quark masses, and to enhance the search for dijet mass peaks in conjunction with b-tagging. (7 refs).