Testrun results from prototype fiber detectors for high rate particle tracking

A fiber detector concept has been realized allowing to register particles within less than 100ns with a space point precision of about 100μm at low occupancy. Three full size prototypes have been built by different producers and tested at a 3GeV electron beam at DESY. After 3m 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 86μm was measured.