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A hodoscope of scintillation counters for time of flight
(TOF) is destinied in order to make a fast trigger, to help in
fast tracks finding, to identify the charged particles both using
TOF and ionization losses. Moreover this hodoscope will be useful
for rays pattern which converted before the calorimeter.
The barrel system consists of 32 scintillation counters covered
the angular region 41 - 139 degrees which corresponds to a
solid angle of 0.75x4pi sr, the average distance from the beam is
71 cm. Each counter of 1640x141x10 mm in size, is viewed
through bent lightguides by two photomultipliers placed inside of
the iron yoke. The screens were designed to suppress the tension
of magnetic field to the value of not more than 0.1 mT within the
PM position.
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