Large-area channel electron multiplier for CRT applications

Large-area electron multipliers have been made which have operated successfully in CRTs. These multipliers consist of a stack of perforated metal dynodes separated by insulators. The aspects of multiplier performance which are important for use in CRTs are the gain and its uniformity, the maximum output current available and the spatial resolution. The multipliers have a uniform, high gain and can provide an output current of more than 1.5 mA per channel. The spatial resolution is determined by the technology of multiplier construction which is based on dynodes whose manufacture is closely related to that of delta shadow masks.