Run 2 Upgrades to the CMS Level-1 Calorimeter Trigger

B. Kreis , J. Berryhill , R. Cavanaugh , K. Mishra , R. Rivera , L. Uplegger , L. Apanasevich , J. Zhang

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J. Marrouche N. Wardle R. Aggleton F. Ball J. Brooke D. Newbold S. Paramesvaran D. Smith M. Baber A. Bundock M. Citron A. Elwood G. Hall G. Iles C. Laner B. Penning A. Rose A. Tapper C. Foudas F. Beaudette L. Cadamuro L. Mastrolorenzo T. Romanteau J. B. Sauvan T. Strebler A. Zabi R. Barbieri I. A. Cali G. M. Innocenti Y.-J. Lee C. Roland B. Wyslouch M. Guilbaud W. Li M. Northup B. Tran T. Durkin K. Harder S. Harper C. Shepherd-Themistocleous A. Thea T. Williams M. Cepeda S. Dasu L. Dodd R. Forbes T. Gorski P. Klabbers A. Levine I. Ojalvo T. Ruggles N. Smith W. Smith A. Svetek J. Tikalsky M. Vicente

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classification ⚛️ physics.ins-det hep-ex

keywords algorithmscalorimeterimprovedlevel-1pile-upsecondstagestages

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The CMS Level-1 calorimeter trigger is being upgraded in two stages to maintain performance as the LHC increases pile-up and instantaneous luminosity in its second run. In the first stage, improved algorithms including event-by-event pile-up corrections are used. New algorithms for heavy ion running have also been developed. In the second stage, higher granularity inputs and a time-multiplexed approach allow for improved position and energy resolution. Data processing in both stages of the upgrade is performed with new, Xilinx Virtex-7 based AMC cards.

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Run 2 Upgrades to the CMS Level-1 Calorimeter Trigger

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