Beam Test of A 12-layer Scintillating-fiber Charged-particle Tracking System

A 96-channel, 3-superlayer, scintillating-fiber tracking system has been tested in a 5 GeV/c pi(-) beam. The scintillating fibers were 830 mu m in diameter, spaced 850 mu m apart, and 4.3 m in length. They were coupled to 6 m long, clear fiber waveguides and finally to visible light photon counters. A spatial resolution of similar to 150 mu m for a double-layered ribbon was achieved with this tracking system. This first prototype of a charged-particle tracking system configured for the Solenoidal Detector Collaboration at the Superconducting Super Collider is a benchmark in verifying the expected number of photoelectrons from the fibers.