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| URL | https://doi.org/10.18429/JACoW-ICALEPCS2025-THBG002 |
|---|---|
| Title | FELIX, the ATLAS readout system: from LHC Run 3 to Run 4 |
| Authors |
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| Abstract | After being successfully deployed to read out a subset of the ATLAS detectors during LHC Run 3 (2022-2026), FELIX will serve all ATLAS detectors in LHC Run 4 (2030-2033). FELIX is a router between custom serial links from front-end ASICs and FPGAs to data collection and processing components via a commodity switched network. FELIX is also capable of fixed-latency forwarding the LHC clock, trigger accepts, and resets received from the TTC (Timing, Trigger and Control) system to front-end electronics. FELIX uses FPGA-based PCIe I/O cards installed in commodity servers. To cope with the increased data rate expected after the major upgrade to the LHC and the detector in between runs, the FLX712 Run 3 PCIe Gen3x16 card, based on an AMD Kintex Ultrascale XCKU115 FPGA, will be replaced with the FLX155, a bifurcated 2x PCIe Gen5x8 card equipped with an AMD Versal Premium VP1552 FPGA/SoC. Firmware installed on the FPGA and software running on the FELIX server are also being upgraded to handle the increased data rate. |
| Paper | download: THBG002.pdf |
| Cite | BibTeX, LaTeX, Text/Word, RIS, EndNote |
| Conference | 20th Int. Conf. Accel. Large Exp. Phys. Control Syst. (ICALEPCS'25) |
| Series | |
| Location | Chicago, IL, USA |
| Date | 20-26 Sep 2025 |
| Publisher | JACoW Publishing, Geneva, Switzerland |
| Editorial Board | Kent Wootton (ANL), Jeffery Biss (FNAL), Gustavo Bruno (ANL), Jeff Kirchman (ANL), Kelly Jaje (ANL), Denise Skiadopoulos (ANL), SuYin Grass Wang (ANL) |
| Online ISBN | 978-3-95450-255-4 |
| Online ISSN | 2226-0358 |
| Received | 04 September 2025 |
| Revised | 24 September 2025 |
| Accepted | 27 October 2025 |
| Issued | 25 November 2025 |
| DOI | 10.18429/JACoW-ICALEPCS2025-THBG002 |
| Pages | 1346-1350 |
| Copyright | Published by JACoW Publishing under the terms of the Creative Commons Attribution 4.0 license. Any further distribution of this work must maintain attribution to the author(s), the published article's title, publisher, and DOI. |