Investigation of the angular dependence of coordinate determination in a hodoscope Cherenkov spectrometer

The results of experimental investigation of the shift of the values of the calculated shower coordinates relative to the initial coordinate of entrance into the hodoscopic Cherenkov spectrometer at electron incidence angles θe=0 deg - 30 deg and energies Ee=0.7-4 GeV are presented. It is shown that when θe≠0 deg, beside systematic coordinate shifts due to drift of the centre of mass of the shower, there arises uncertainty in the coordinate determination, which is connected with the dependence on the point of particle incidence on a cell of the spectrometer. This uncertainty reaches ≅ 15 mm at θe ≥ 5 deg. All the experimental data are compared with those the Monte Carlo simulation of shower development. 8 refs.; 5 figs