| ATLAS Note | |
| Report number | ATL-DAQ-PROC-2024-013 |
| Title | Phase-1 ATLAS Level-1 Trigger in Run-3 |
| Author(s) | Penc, Ondrej (CERN) ; ATLAS Collaboration |
| Corporate Author(s) | The ATLAS collaboration |
| Collaboration | ATLAS Collaboration |
| Publication | 2024 |
| Imprint | 23 Sep 2024 |
| Number of pages | 6 |
| In: | PoS ICHEP2024 (2025) 882 |
| In: | 42nd International Conference on High Energy Physics (ICHEP 2024), Prague, Czech Republic, 18 - 24 Jul 2024, pp.882 |
| DOI | 10.22323/1.476.0882 |
| Subject category | Particle Physics - Experiment |
| Accelerator/Facility, Experiment | CERN LHC ; ATLAS |
| Free keywords | ATLAS ; TDAQ ; Level-1 Trigger ; Phase-1 ; Run-3 |
| Abstract | The ATLAS Level-1 Trigger, crucial for the selection of LHC events at CERN, has been upgraded for Run-3 with the state-of-the-art processors and electronic devices, extensively using optical links to enhance performance. The Calorimeter Trigger system, utilizing 10-fold higher granularity, enhances object identification alongside a redesigned Topological Processor for detailed angular analysis. Notably, the Muon Trigger system, with input from the newly installed muon sub-detector (New Small Wheel), improves Level-1 Trigger background rejection. Trigger Decision and Clock distribution were enhanced with new single-board modules. The Central Trigger system includes a System-on-Chip for the new Muon Interface, running control and monitoring applications directly on the hardware. This overview highlights the impact on the performance of the upgraded system, particularly under Run-3 high-intensity conditions. |
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Registre creat el 2024-09-23, darrera modificació el 2025-02-13
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