An overview of the system architecture and algorithms used for the DØ Central Track Trigger (CTT) in the Run 2 of the Fermilab Tevatron Proton-Antiproton Collider is presented. This system uses information from the newly commissioned Central Fiber Tracker and Preshower Detectors to generate Level 1 trigger decisions. It also generates lists of seed tracks and preshovver clusters that are sent to the Level 1 Muon Trigger, L2 Silicon Track Trigger, and Central and Forward Preshower Level 2 preprocessors. The system consists of modular boards which utilize field-programmable gate arrays (FPGAs) to implement trigger algorithms. The system delivers trigger decisions every 132 ns, based on input data flowing at a maximum sustained rate of 475 gigabits per second. The first results of trigger efficiency studies are presented.
Bibliographical noteFunding Information:
Manuscript received June 6, 2003; revised October 17, 2003. Fermi National Accelerator Laboratory is operated by University Research Association Inc. under Contract DE-AC02-76CH03000 with the U.S. Department of Energy. J. Olsen, J. Anderson, R. Angstadt, F. Borcherding, S. Grünendahl, M. Johnson, Y. Maravin, S. Rapisarda, M. Tomoto, B. Vachon, and N. Wilcer are with Fermi National Accelerator Laboratory, Batavia, IL 60510 USA (e-mail: email@example.com). L. Babukhadia, M. Bhattacharjee, S. Desai, P. Grannis, Y. Hu, and Y. Mutaf are with SUNY Stony Brook, Stony Brook, NY 11794 USA. G. Blazey and M. Martin are with NICADD/NIU, Northern Illinois University, DeKalb, IL 60115 USA. B. Connolly and S. Linn are with the Physics Department, Florida State University, Tallahassee, FL 32306 USA. M. Cooke is with Rice University, TW Bonner Nuclear Lab, Houston, TX 77251 USA. D. Evans is with the Department of Physics, Lancaster University, Lancaster LA1 4YW, U.K. V. Jain and K. Yip are with the Physics Department, Brookhaven National Laboratory, Upton, NY 11973 USA. J. Lizarazo and R. Ramirez-Gomez are with Departamento de Fisica, Univer-sidad de Los Andes, Bogota, Colombia. C. Nöding is with Albert-Ludwigs-Universität Freiburg, Freiburg 79005, Germany. K. Stevenson is with Indiana University, Bloomington, IN 47405 USA. T. Wijnen is with University of Nijmegen, 6546 ED Nijmegen, The Netherlands. G. Wilson is with the Department of Physics and Astronomy, University of Kansas, Lawrence, KS 66045 USA. Q. Xu is with the Department of Physics, University of Michigan, Ann Arbor, MI 48109 USA. Digital Object Identifier 10.1109/TNS.2004.828703
- Data acquisition
- Field programmable gate arrays (FPGAs)
- Parallel processing
- Particle tracking
- Scintillation detectors