The PHENIX lead-scintillator electromagnetic calorimeter: test beam and construction experience

We have recently completed the production of the 15552 channel lead-scintillator electromagnetic calorimeter for the PHENIX experiment at RHIC. Our design features a single 4 tower module which is repeated throughout and which was produced with a number of quality control steps designed to achieve consistent, large light yields in all channels. We present results on the uniformity of the calorimeter, accuracy of a cosmic muon based precalibration scheme and test beam performance.