CMS calorimeter trigger phase i upgrade

P. Klabbers*, T. Gorski, M. Bachtis, K. Compton, S. Dasu, A. Farmahini-Farahani, R. Fobes, A. Gregerson, M. Grothe, I. Ross, D. Seemuth, M. Schulte, W. H. Smith

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

3 Scopus citations


We present a design for the Phase-1 upgrade of the Compact Muon Solenoid (CMS) calorimeter trigger system composed of FPGAs and Multi-GBit/sec links that adhere to the μTCA crate Telecom standard. The upgrade calorimeter trigger will implement algorithms that create collections of isolated and non-isolated electromagnetic objects, isolated and non-isolated tau objects and jet objects. The algorithms are organized in several steps with progressive data reduction. These include a particle cluster finder that reconstructs overlapping clusters of 2x2 calorimeter towers and applies electron identification, a cluster overlap filter, particle isolation determination, jet reconstruction, particle separation and sorting.

Original languageEnglish (US)
Article numberC01046
JournalJournal of Instrumentation
Issue number1
StatePublished - Jan 2012
Externally publishedYes


  • Trigger algorithms
  • Trigger concepts and systems (hardware and software)

ASJC Scopus subject areas

  • Mathematical Physics
  • Instrumentation


Dive into the research topics of 'CMS calorimeter trigger phase i upgrade'. Together they form a unique fingerprint.

Cite this