The ARGUS Vertex Trigger
classification
✦ hep-ex
keywords
argusmasksoriginatingtrackstriggervertexableaccess
read the original abstract
A fast second level trigger has been developed for the ARGUS experiment which recognizes tracks originating from the interaction region. The processor compares the hits in the ARGUS Micro Vertex Drift Chamber to 245760 masks stored in random access memories. The masks which are fully defined in three dimensions are able to reject tracks originating in the wall of the narrow beampipe of 10.5\,mm radius.
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