FPGA-Based Tracklet Approach to Level-1 Track Finding at CMS for the HL-LHC

¹ Cornell University, Ithaca, NY, USA
² Rutgers University, New Brunswick, NJ, USA
³ University of Notre Dame, South Bend, IN, USA
⁴ Ohio State University, Columbus, OH, USA

^a e-mail: mez34@cornell.edu

Published online: 8 August 2017

Abstract

During the High Luminosity LHC, the CMS detector will need charged particle tracking at the hardware trigger level to maintain a manageable trigger rate and achieve its physics goals. The tracklet approach is a track-finding algorithm based on a road-search algorithm that has been implemented on commercially available FPGA technology. The tracklet algorithm has achieved high performance in track-finding and completes tracking within 3.4 μs on a Xilinx Virtex-7 FPGA. An overview of the algorithm and its implementation on an FPGA is given, results are shown from a demonstrator test stand and system performance studies are presented.