Study of the accuracy of particle track detection by proportional chambers using cathode information readout

Results are presented of a study of the accuracy in detecting relativistic particle coordinates in proportional chambers using the cathode information read out. The width of cathode strips was 2 mm and the anode to cathode distance-4 mm. For the tracks perpendicular to the chamber plane the detection accuracy was 50 μm. Two methods of calculation of the centre of the induced charge distribution on the cathode strips are described: by the centre of gravity and by least square fit. Studies are presented of the accuracy in measuring the track coordinates as a function of the charge produced in avalanches. It is shown that for single-particle events the change of the width of the induced charge distribution does not exceed 1.2%