Confocal scanner for vertical particle tracks in the nuclear photoemulsion

A confocal scanner for selective observation of the vertical particle tracks in the nuclear photoemulsion is described. The particle track being searched for is imaging at an angle of 45 with respect to the optical axis of the system. The confocal scanner is provided with a new optical element, an “image orthogonalizator,” by means of which the extended image of the inclined vertical particle track is rotated through an angle of 90. The stereoscopic version of the confocal scanner is presented as well. The described systems will be used in experiments for the investigation of neutrino oscillations in the accelerator.