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, 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

TL;DR
This paper describes the two-stage upgrade of the CMS Level-1 calorimeter trigger, enhancing its algorithms, resolution, and processing capabilities to cope with increased LHC luminosity and pile-up.
Contribution
It introduces new algorithms with pile-up corrections, higher granularity inputs, and a time-multiplexed approach, along with hardware upgrades using Xilinx Virtex-7 AMC cards.
Findings
Improved trigger performance under higher pile-up conditions
Enhanced energy and position resolution with new algorithms
Successful implementation of hardware upgrades for data processing
Abstract
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.
Peer Reviews
No public reviews on file for this paper yet. If you reviewed it on a platform where reviews are public (OpenReview, ICLR, NeurIPS, ICML), you can paste yours below so the community can read it here.
Videos
No videos yet. Explain this paper in a talk, walkthrough, or lecture? Add one.
Taxonomy
TopicsParticle Detector Development and Performance · Particle physics theoretical and experimental studies · Distributed and Parallel Computing Systems
