Speaker
Dr
Jim Brooke
(University of Bristol (UK))
Description
The first level trigger of the CMS experiment is comprised of custom electronics that process data from the calorimeters and muon detectors in order to select the most interesting events from LHC collisions. The rate of events selected by this Level-1 trigger must be reduced from the beam crossing frequency to no more than 100 kHz before detector digitization and High Level Trigger processing can occur. Here we report on the efficiencies, resolution, and trigger rates of the Level-1 trigger as measured from LHC proton collisions at 7 and 8 TeV center-of-mass energies. Example trigger menus used to select events for physics analysis by the CMS experiment also will be discussed.
Author
Dr
Jim Brooke
(University of Bristol (UK))
