The CMS High Level Trigger
High Energy Physics - Experiment
2008-11-26 v1
Abstract
At the Large Hadron Collider at CERN the proton bunches cross at a rate of 40MHz. At the Compact Muon Solenoid experiment the original collision rate is reduced by a factor of O (1000) using a Level-1 hardware trigger. A subsequent factor of O(1000) data reduction is obtained by a software-implemented High Level Trigger (HLT) selection that is executed on a multi-processor farm. In this review we present in detail prototype CMS HLT physics selection algorithms, expected trigger rates and trigger performance in terms of both physics efficiency and timing.
Cite
@article{arxiv.hep-ex/0512077,
title = {The CMS High Level Trigger},
author = {The CMS Trigger and Data Acquisition Group},
journal= {arXiv preprint arXiv:hep-ex/0512077},
year = {2008}
}
Comments
accepted by EPJ Nov 2005