The CMS high level trigger
By W. Adam, G. Bruno, C. Delaere, V. Lemaître, A. Ninane, O. Aa. 2005
152 citations recorded by the source corpus.
At the Large Hadron Collider at CERN the proton bunches cross at a rate of 40 MHz. At the Compact Muon Solenoid experiment the original collision rate is reduced by a factor of $\mathcal{O}$ (1000) using a Level-1 hardware trigger. A subsequent factor of $\mathcal{O}$ (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.
Subfields: Nuclear and High Energy Physics
View Paper: https://www.semanticscholar.org/paper/c4c4ab1605027f87f517850d9274da57747d2d71
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In Nuclear and High Energy Physics
- Cms Collaboration
- Atlas Collaboration
- The Cms Collaboration
- M. Raidal
- K. Kannike
- Philip C. Harris
- A. Gritsan
- Nhan Tran
Citations in the corpus
- Description and performance of track and primary-vertex reconstruction with the CMS tracker: JINST 9 (2014) 10, P10009 (2014, methodology): “In addition, the tracking software must run sufficiently fast to be used not only for offline event reconstruction (of≈109 events per year), but also for the CMS High-Level Trigger (HLT), which processes events at rates of up to 100 kHz.”
- The CMS experiment at the CERN LHC (2008, methodology): “It has been estimated [189] that under these conditions the HLT algorithms will demand a mean processing time of around 50 ms on a 3-GHz Xeon CPUcore.”
- Description and performance of track and primary-vertex reconstruction with the CMS tracker (2014, methodology): “Track reconstruction is employed in a variety of ways to satisfy different needs in the HLT. Examples of track reconstruction at the HLT include seeds originating in the muon”
- Measurement of the Inclusive W and Z Production Cross Sections in pp Collisions at sqrt(s) = 7 TeV (2011, background): “The High Level Trigger (HLT) processor farm [25] further decreases the event rate to a few hundred Hz before data storage.”
- Determination of Jet Energy Calibration and Transverse Momentum Resolution in CMS (2011, methodology): “The minimum bias sample is collected by requiring coincidental hits in the beam scintillating counter [3] on either side of the CMS detector.”