The Trigger System of the CMS Experiment

Abstract

We give an overview of the main features of the CMS trigger and data acquisition (DAQ) system. Then, we illustrate the strategies and trigger configurations (trigger tables) developed for the detector calibration and physics program of the CMS experiment, at start-up of LHC operations, as well as their possible evolution with increasing luminosity. Finally, we discuss the expected CPU time performance of the trigger algorithms and the CPU requirements for the event filter farm at start-up.

Presented at the 10th International Conference On Instrumentation For Colliding Beam Physics (INSTR08), 28 Feb - 5 Mar 2008, Novosibirsk, Russia