An investigation of high-multiplicity gamma events in pp collisions with c.m. energies between 22 and 62 GeV

Results of an exploratory experiment, on the investigation of high- multiplicity gamma-ray events, which was carried out using the colliding proton beams of the CERN intersecting storage rings are described. The work was carried out by sharing the detector and recording systems of the CERN-Columbia-Rockefeller Group and by using a separate logic system to provide a trigger on high-multiplicity gamma-ray events (multigamma events). The main objective of the investigation was to look for multigamma events which could reveal interesting features of pi /sup 0/ multiple production as well as other possible mechanisms of gamma -ray production. (4 refs).