The Phase-1 Upgrade for the Level-1 Muon Barrel Trigger of the ATLAS Experiment at LHC
V. Izzo, A. Aloisio, R. Giordano, S. Perrella, R. Vari

TL;DR
This paper presents the design and testing of a new interface board for the ATLAS Level-1 Muon Barrel Trigger upgrade, enhancing data transfer and trigger algorithm capabilities using FPGA technology.
Contribution
It introduces the first prototype of a new Barrel Interface Board with FPGA, supporting optical data transmission and advanced trigger algorithms for the ATLAS experiment.
Findings
Successful hardware implementation demonstrated
Passed initial functional tests
Validated integration with existing systems
Abstract
The Level-1 Muon Barrel Trigger of the ATLAS Experiment at LHC makes use of Resistive Plate Chamber (RPC) detectors. The on-detector trigger electronics modules are able to identify muons with predefined transverse momentum values (pT) by executing a coincidence logic on signals coming from the various detector layers. Then, on-detector trigger boards transfer trigger data to the off-detector electronics. A complex trigger system processes the incoming data by combining trigger information from the Barrel and the End-cap regions, and by providing the combined muon candidate to the Central Trigger Processor (CTP). For almost a decade, the Level-1 Trigger system has been operating very well, despite the challenging requirements on trigger efficiency and performance, and the continuously increasing LHC luminosity. In order to cope with these constraints, various upgrades for the full…
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