"RUNJOB" (MSU, LPI, 7 Japanese Institutes) - an investigation of the nuclear composition and the energy spectrum of primary high-energy cosmic rays by the direct methods. The unique methodic feature of the RUNJOB experiment consists of employing the X-ray screen-type films (two-layer X-ray films sandwiched between thin scintillator screens), which makes it possible the direct registration of cosmic ray particles by vertex-trigger method. As a result, the efficiency of the search for heavy cosmic nuclei in the detector may be as high as 100%. In turn, this asks for more stringent requirements imposed on both identification and processing of the detected particle tracks: all the measurements are to be carried out with such a quality which preserves the achieved registration efficiency.

The PAVICOM facility was the only one, which made it possible to process completely and efficiently the whole experimental data:

  • heavy nucleus tracks in the detector were reconstructed;
  • charge distribution was measured for all detected particles.

A special software was elaborated in the RUNJOB experiment to search for the nucleus tracks in the emulsion and to analyze the characteristics of dark spots in X-ray films, providing the possiobly most accurate energy determination of the registered particles. The software package worked out for RUNJOB experiment is successfully applied to handle a number of other tasks, such as scanning of the nuclear emulsion films for experiment SPECTR, processing the data of stratospheric experiment STRANA, etc.