Abstract
The Global Trigger (GT) is the final step of the CMS Level-1 Trigger and implements the ``menu'' of triggers, which is a set of selection requirements applied to the final list of objects (such as muons, electrons or jets) to trigger the readout of the detector and serve as basis for further calculations by the High Level Trigger. Operational experience in developing trigger menus from the first LHC run has shown that the requirements increased as the luminosity and pile-up increased. The new GT (μGT) is designed based on Xilinx Virtex-7 FPGAs, which combine unsurpassed flexibility with regard to scalability and high robustness. Furthermore, a custom board which receives signals from legacy electronics and basic binary inputs from less complex trigger sources is presented. Additionally, this paper describes the architecture of a distributed testing framework and the Trigger Menu Editor.
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