Author

Igor..nosp@m.Gavr.nosp@m.ilenk.nosp@m.o@ce.nosp@m.rn.ch

Introduction

This tool is concrete implementation for ISiZvertexMaker and is devoted for estimation position all primary vertices along beam direction.

This tool uses histogramming method. It takes all space point seeds with two pixel space points and fill one dimension histogramm of Z-position this seeds extrapolated to radius = 0. Once this histogramm has been filled primary vertices can be detected by simply scanning the contents of the cumulative array.

This algorithm uses ISiSpacePointsSeedMaker tool for space point seeds production.