We describe the system of multiwire proportional chambers (MPCs) of the MUL
TI setup for investigation of small-angle correlations. The whole system of
coordinate MPCs is placed in a common gaseous volume. The MPC characterist
ics were measured on a U-400M-cyclotron beam. The detection efficiency for
fragments that have a charge Z = 1-6 and form correlation pairs is similar
to 100%.