The analog trigger processor for the new parity violation experiment at mami

A fast analog trigger processor is being developed for the measurement of the parity violating asymmetry of the cross section of elastically scattered polarized electrons on unpolarized protons. The total event rate expected is about 100 MHz in the whole detector which consists of 1022 PbF 2 crystals. This requires fast cluster recognition, spatial and temporal pile-up rejection and fast data storage. First results of a prototype are discussed.