Identifying primitives for a calorimeter trigger

Studies on how to utilize the information from a finely segmented calorimeter in a trigger system have a significant impact on the overall trigger design. The GEM (Gammas, Electrons, Muons) detector at the Superconducting Super Collider will utilize calorimeter information in all levels of its trigger. Algorithms are being developed to provide local and global triggers. Identifying which primitives are useful is a necessary step in determining what hardware will be needed in order to implement the required trigger primitives. The results of simulations considered here provide some of the best information available about how to best identify physics processes for a given hardware configuration