Rapid 3D track reconstruction with the BABAR trigger upgrade

N. Felt, S. J. Bailey, G. W. Brandenburg, T. Fries, S. Harder, M. Morii, J. N. Oliver, N. B. Sinev, E. Won

Research output: Contribution to journalConference articlepeer-review

2 Citations (Scopus)


A new hardware trigger system based on tracks detected by a stereo drift chamber has been developed for the BABAR experiment at Stanford Linear Accelerator Center. The z0 pT Discriminator (ZPD) is capable of fast, 3-dimensional reconstruction of charged particle tracks, and provides rejection of background events due to beam particles interacting with the beam pipe at the first-level trigger. Over 1 gigabyte of data is processed per second by each ZPD module. Rapid track reconstruction has been realized by the use of the latest-generation FPGAs.

Original languageEnglish
Article numberN36-62
Pages (from-to)1288-1291
Number of pages4
JournalIEEE Nuclear Science Symposium Conference Record
Publication statusPublished - 2003
Externally publishedYes
Event2003 IEEE Nuclear Science Symposium Conference Record - Nuclear Science Symposium, Medical Imaging Conference - Portland, OR, United States
Duration: 2003 Oct 192003 Oct 25

Bibliographical note

Copyright 2020 Elsevier B.V., All rights reserved.


  • Level-1 trigger
  • Tracking
  • ZPD

ASJC Scopus subject areas

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


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