Automated radioactive control system of the Moscow Meson Factory's releases

We have been investigating the radiation environmental effects from high current proton accelerators. Now we are creating an Automatic Radioactive Control System of the Moscow meson factory's releases (ARCS) into the atmosphere. The composition of the releases consists primarily of the short-lived radioactive gases C, N, O, O. About 10% of the releases consist of Ar and about 2% are other radionuclides. The continual sampling of the released mixture results from the pressure difference existing in the ventilation system. The mixture sampling network includes the filters, the ionization and the measuring chambers, where gamma-rays with energy of 0.511 Mev and 1.29 Mev are measured with the scintillation gamma spectrometer. Additionally, the system measures gross gamma and beta activity, the speed of the selected mixture, the speed of the released mixture, the speed and direction of the wind, the vertical gradient of the temperature and the humidity of the released mixture. The results of the measurements needed for sight and population dose model calculations are written into a database of ARCS