Two MiniPlug calorimeters, designed to measure the energy and lateral
position of particles in the (forward) pseudorapidity region of
3.6<∣η∣<5.2 of the CDF detector, have been recently installed as part of
the Run II CDF upgrade at the Tevatron pˉp collider. They consist of
lead/liquid scintillator read out by wavelength shifting fibers arranged in a
pixel-type towerless geometry suitable for `calorimetric tracking'. The design
concept, the prototype performance and the final design of the MiniPlugs are
here described. A recent cosmic ray test resulted in a light yield of
approximately 100 pe/MIP, which exceeds our design requirements.Comment: 15 pages, 17 figures; contribution to DPF200
