A Scintillation Camera for High Energy Physics

A scintillation camera has been developed for use as a triggerable vertex detector in high energy physics experiments. The device consists of a NaI(Tl) target viewed by a gated four-stage magnetically focussed image intensifier. Photographic film is used as the recording medium. In tests for use in an experiment to study charm, an interaction rate of 1.5 · 104/s was used, the resolution measured to be as good as 5 μm RMS, and the hit density found to be 4/mm.