The Hall D Barrel Calorimeter design consists of layers of scintillating fibers sandwiched between thin sheets of lead. Among the R&D issues that will be investigated in the pursuit of the optimal design for this device is the selection of the scintillating fiber type which must be based on superior light-attenuation and timing-resolution characteristics. The first series of tests to compare single- and multi-clad fibers from different manufacturers, using cosmics and 100 MeV pions at TRIUMF, are reported herein.
