Testrun results from prototype fiber detectors for high rate particle   tracking
  A fiber detector concept has been realized allowing to registrate particles within less than 100 nsec with a space point precision of about 0.1 mm at low occupancy. Three full size prototypes have been build by different producers and tested at a 3 GeV electron beam at DESY. After 3 m of light guides 8-10 photoelectrons were registrated by multichannel photomultipliers providing an efficiency of more than 99%. Using all available data a resolution of 0.086 mm was measured. 
E. C. Aschenauer, J. Baehr, V. Gapienko, B. Hoffmann, H. Luedecke, A.   Menchikov, C. Mertens, R. Nahnhauer, R. Shanidze