Test beam results from the CDF plug upgrade calorimeter

This report describes the performance of the CDF Plug Upgrade calorimeter measured at the Fermilab Meson Beam line. A 60° section of the Electromagnetic and Hadronic calorimeters has been exposed to e+, π+ and μ+ beams. We determine an energy resolutions of σ(E)/E=15.5%/E for the Electromagnetic and σ(E)/E=78%/E⊕ 5.3% for the Hadronic Calorimeters (E measured in GeV). The linearity in the response is within specifications. The uniformity of transverse response is 1.6% for e+ and 2.3% for π+. The Shower Maximum Detector, instrumenting the EM calorimeter, provides a position resolution of 1 mm for e+ energies above 50 GeV. The detector calibration system, based on a set of movable 137Cs sources, is able to track the energy scale at the level of ∼1−2%.