Fast pipelined trigger processors for the forward muon chambers of the H1 experiment on the Hadron Electron Ring Accelerator (HERA) at DESY, Hamburg

The road finder and final decision processors described perform the triggering function of the H1 forward muon chambers. Their function is to examine each event and determine the bunch collision of origin of the observed data. They must then notify the H1 trigger system if an event satisfies trigger conditions. Two custom application specific integrated circuits (ASICs) were designed in 1.5- mu m CMOS to implement the trigger algorithm. They feature fast pipelines and scan paths. It is believed that these ASICs can be used as fundamental building blocks in future particle physics experiments.<>