Firmware implementation of Phase-2 Overlap Muon Track Finder algorithm for CMS Level-1 trigger

Abstract The Overlap Muon Track Finder (OMTF) is one of the subsystems of the Compact Muon Solenoid (CMS) Level-1 Trigger. For the High-Luminosity Large Hadron Collider era (CMS phase-2 upgrade), a new version of the OMTF is currently under development. This upgraded version will be implemented on a custom ATCA board X2O, which houses a Xilinx UltraScale+ FPGA and 25 Gbps optical transceivers. This contribution focuses on the firmware implementation of the muon trigger algorithm and input data pre-processing, leveraging the High-Level Synthesis (HLS) technique. The paper presents current design and verification results, as well as experiences in using both standard and non-standard HLS development workflows.