[en] At the Dubna Synchrophasotron an accelerated beam is simultaneously used by two or three experimental setups. An improvement of the injection system and a decrease of the influence of distortion factors of the magnetic field in the operating region of the vacuum chamber made it possible to obtain the average intensity of an accelerated proton beam anti Nsub(k) = 1.4x10¹² protons per pulse and the maximum intensity of total energy Nsub(ksub(max)) = 4.0x10¹² protons per pulse. This is of importance to accelerate nuclei heavier than protons. Magnetic measurements made by different types of magnetometers permitted the operating field of the accelerator to be refined with an error of no worse than +- 0.5%. Geodetic observations of the behaviour of the accelerator electromagnet are in progress and are aimed at controlling the electromagnet position at accumulation of statistical data on the influence of surrounding constructions and season conditions on the deformation of the electromagnet ring foundation. The investigation has been performed at the Laboratory of High Energies, JINR