space pattern of events with halo in the field of energies E≥1015 eV

In Roentgen emulsion chamber of 'Adron-44' facility located at 3340 m, we have registered two exotic interactions with build-up of halo- diffuse dark spots several cm2 in size in the area of energy > 1015 eV. Similar events were registered in rock experiments of some foreign teams (Japan-Brazil collaboration, 'Pamir' cooperation etc.). Nature of halo build-up is not clear enough even now, that is why detailed study of this phenomena is of great interest. In the report there are space and energy parameters of secondary gamma-quanta building halo in events with E = 4.4·101'5 eV and 3.3·1015 eV. Space distribution is compared with calculated distributions basing on scaling model. The comparison helps to conclude that there is possible scaling failure in the field of fragmentation of impinging hadron at E0∼1016 eV