The performance of scintillating fiber detectors with 2 m long light guides
was investigated for COMPASS experiment, using a 450 MeV/c electron beam.
Prototypes consisting of 0.5 mm diameter fibers (Kuraray SCSF-38 single-cla
dding) with the position-sensitive photomultipliers H6568 (Hamamatsu) were
constructed for the test. The time resolution of a similar to 430 ps was ob
tained with about 10 photoelectrons for the prototype of 10-layers structur
e. (C) 1999 Elsevier Science B.V. All rights reserved.