R&D and mass production of a scintillating tile/fiber system for the CDF plug upgrade EM calorimeter

The plug calorimeter of the Collider Detecor at Fermilab (CDF) [CDF Collaboration, Nucl. Instr. and Meth. A 271 (1988) 387 will be upgraded, replacing the existing gas calorimeter by a scintillating tile/fiber calorimeter. We have completed R & D for the CDF plug upgrade EM calorimeter. We describe the results of the R & D leading to the final design of the tile/fiber system for the calorimeter. pleted the whole production of the tile/fiber system in February 1994. To control its quality, we performed various quality tests during mass production. The tests and results are reviewed.