Trigger processor algorithm for a tracking detector in a solenoidal magnetic field

This paper describes a method of calculating triggers for a cylindrical multilayer tracking detector in a solenoidal magnetic field. The method is serial and requires one clock cycle per layer. It has two main advantages over a logical equation approach. First, missing track elements have no effect on the amount of calculation required and the resolution degrades in a predictable manner. Second, this method allows implementing information from the third (nonbend) coordinate as a simple extension to the basic algorithm.