Comparing cross talk in doped scintillating-fiber bundles.

A simple experimental technique to measure and compare cross talk in fiber bundles designed for high-energy-particle-tracking systems in colliders is described. Each bundle is composed of individual step-index, multimode fibers that are doped with a scintillating material at a given concentration. Results for two different scintillators doped at two different concentrations are included to demonstrate the validity and the potential of the technique.