Testrun results from prototype fiber detectors for high rate particle tracking

Abstract A fiber detector concept has been realized allowing to register particles within less than 100 ns with a space point precision of about 100 μm at low occupancy. Three full size prototypes have been built by different producers and tested at a 3 GeV electron beam at DESY. After 3 m of light guides 8–10 photoelectrons were registered by multichannel photomultipliers providing an efficiency of more than 99%. Using all available data a resolution of 86 μm was measured.