The Apollo ATCA design for the CMS track finder and the pixel readout at the HL-LHC

A. Albert, Z. Demiragli, D. Gastler, K. Hahn, E. Hazen, P. Kotamnives, S. Noorudhin, A. Peck, J. Rohlf, C. Strohman, P. Wittich, R. Zou*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

1 Scopus citations


The challenging conditions of the High-Luminosity LHC require tailored hardware designs for the trigger and data acquisition systems. The Apollo platform features a "Service Module"with a powerful system-on-module computer that provides standard ATCA communications and application-specific "Command Modules"with large FPGAs and high speed optical fiber links. The CMS version of Apollo will be used for the track finder and the pixel readout. It features up to two large FPGAs and more than 100 optical links with speeds up to 25 Gb/s. We study carefully the design and performance of the board by using customized firmware to test power consumption, heat dissipation, and optical link integrity. This paper presents the results of these performance tests, design updates, and future plans.

Original languageEnglish (US)
Article numberC04033
JournalJournal of Instrumentation
Issue number4
StatePublished - Apr 1 2022


  • Detector control systems (detector and experiment monitoring and slow-control systems, architecture, hardware, algorithms, databases)
  • Digital electronic circuits
  • Modular electronics
  • Trigger concepts and systems (hardware and software)

ASJC Scopus subject areas

  • Instrumentation
  • Mathematical Physics


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