22 October 1993 Performance of multiclad scintillating and waveguide optical fibers readout with visible light photon counters
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Abstract
We have measured the performance of scintillating fiber detectors read out with visible light photon counters (VLPCs). Both single clad and multiclad scintillating fibers have been tested. For a system comprised of 3 m long multiclad scintillating fibers of 830 micrometers diameter optically coupled to 8 m long multiclad waveguide fibers of 965 micrometers diameter and read out with HISTE-IV VLPCs, we detect an average of 6.2 photoelectrons from the far end of the scintillating fiber if the fiber end is unmirrored and 10 photoelectrons if the fiber end is mirrored. A minimum of 2.4 detected photoelectrons is required for efficient particle detection in high energy physics tracking applications. Hence our result indicates a factor of 2.5 and 4 safety margin in required light yield for the unmirrored and mirrored cases respectively. Given this substantial detected photoelectron yield, cosmic ray tracks are easily detected in fiber arrays, and excellent performance characteristics are expected for the fiber trackers designed for the D0 experiment at the Fermilab Tevatron Collider and SDC experiment at the SSC laboratory.
© (1993) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Randy C. Ruchti, "Performance of multiclad scintillating and waveguide optical fibers readout with visible light photon counters", Proc. SPIE 2007, Scintillating Fiber Technology and Applications, (22 October 1993); doi: 10.1117/12.161933; https://doi.org/10.1117/12.161933
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