CDF level 2 trigger upgrade - The pulsar project

M. Bogdan*, R. Demaat, W. Fedorko, H. Frisch, K. Hahn, M. Hakala, P. Keener, Y. Kim, J. Kroll, S. Kwang, J. Lewis, C. Lin, T. Liu, F. Marjamaa, T. Mansikkala, C. Neu, M. Pitkanen, B. Reisert, V. Rusu, H. SandersM. Shochet, H. Stabenau, R. Van Berg, P. Wilson, D. Whiteson, P. Wittich

*Corresponding author for this work

Research output: Contribution to journalConference articlepeer-review


The CDF data acquisition and trigger system is being upgraded to significantly increase the bandwidth for the upcoming high luminosity running of the Tevatron Collider (Run IIb). This paper focus on the upgrade for the Level 2 (L2) Trigger Decision Crate. This crate is at the heart of the L2 trigger system and has to interface with many different subsystems both upstream and downstream. The challenge of this upgrade is to have an uniform design to be able to interface with many different data paths upstream, merge and process the data at high speed for fast L2 trigger decision making, and minimize the impact on the running CDF experiment during the commissioning phase. In order to meet this challenge, the design philosophy of the upgrade is to use one type of general purpose motherboard, with a few powerful modern FPGAs and SRAMs, to interface any user data with any industrial standard link through the use of mezzanine cards. This general purpose motherboard, named "Pulsar" (PULSer And Recorder), is fully self-testable at board level as well as at system level. CERN S-LINK is chosen to allow Pulsar to communicate with commodity processors via high bandwidth, low latency S-LINK-to-PCI cards. Knowledge gained by using S-LINK at CDF will be transferable to and from the LHC community.

Original languageEnglish (US)
Pages (from-to)1072-1076
Number of pages5
JournalIEEE Nuclear Science Symposium Conference Record
StatePublished - 2004
Event2004 Nuclear Science Symposium, Medical Imaging Conference, Symposium on Nuclear Power Systems and the 14th International Workshop on Room Temperature Semiconductor X- and Gamma- Ray Detectors - Rome, Italy
Duration: Oct 16 2004Oct 22 2004


  • CDF
  • Pulsar
  • Upgrade

ASJC Scopus subject areas

  • Radiation
  • Nuclear and High Energy Physics
  • Radiology Nuclear Medicine and imaging

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