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PHENIX on-line systems

  • S. S. Adler
  • , M. Allen
  • , G. Alley
  • , R. Amirikas
  • , Y. Arai
  • , T. C. Awes
  • , K. N. Barish
  • , F. Barta
  • , S. Batsouli
  • , S. Belikov
  • , M. J. Bennett
  • , M. Bobrek
  • , J. G. Boissevain
  • , S. Boose
  • , C. Britton
  • , L. Britton
  • , W. L. Bryan
  • , M. M. Cafferty
  • , T. A. Carey
  • , W. C. Chang
  • C. Y. Chi, M. Chiu, V. Cianciolo, B. A. Cole, P. Constantin, K. C. Cook, H. Cunitz, E. J. Desmond, K. Ebisu, Y. V. Efremenko, K. El Chenawi, M. S. Emery, D. Engo, N. Ericson, D. E. Fields, S. Frank, J. E. Frantz, A. Franz, A. D. Frawley, J. Fried, J. Gannon, T. F. Gee, R. Gentry, P. Giannotti, H. A. Gustafsson, J. S. Haggerty, S. Hahn, J. Halliwell, H. Hamagaki, A. G. Hansen, H. Hara, J. Harder, X. He, F. Heistermann, T. K. Hemmick, M. Hibino, J. C. Hill, K. Homma, B. V. Jacak, U. Jagadish, J. Jia, F. Kajihara, S. Kametani, Y. Kamyshkov, A. Kandasamy, J. H. Kang, J. Kapustinsky, K. Katou, M. A. Kelley, S. Kelly, J. Kikuchi, S. Y. Kim, Y. G. Kim, E. Kistenev, D. Kotchetkov, K. Kurita, J. G. Lajoie, M. Lenz, W. Lenz, X. H. Li, S. Lin, M. X. Liu, S. Markacs, F. Matathias, T. Matsumoto, J. Mead, R. E. Mischke, G. C. Mishra, A. Moore, M. Muniruzzamann, M. Musrock, J. L. Nagle, B. K. Nandi, J. Newby, J. Nystrand, E. O'Brien, P. O'Connor, H. Ohnishi, A. Oskarsson
  • Brookhaven National Laboratory
  • Oak Ridge National Laboratory
  • Florida State University
  • High Energy Accelerator Research Organization, Tsukuba
  • University of California at Riverside
  • Columbia University
  • Iowa State University
  • Los Alamos National Laboratory
  • Academia Sinica - Institute of Physics
  • Nagasaki Institute of Applied Science
  • Lund University
  • University of New Mexico
  • The University of Tokyo
  • Georgia State University
  • Waseda University
  • Hiroshima University
  • Yonsei University
  • Stony Brook University
  • University of Tennessee

Research output: Contribution to journalArticlepeer-review

26 Scopus citations

Abstract

The PHENIX On-Line system takes signals from the Front End Modules (FEM) on each detector subsystem for the purpose of generating events for physics analysis. Processing of event data begins when the Data Collection Modules (DCM) receive data via fiber-optic links from the FEMs. The DCMs format and zero suppress the data and generate data packets. These packets go to the Event Builders (EvB) that assemble the events in final form. The Level-1 trigger (LVL1) generates a decision for each beam crossing and eliminates uninteresting events. The FEMs carry out all detector processing of the data so that it is delivered to the DCMs using a standard format. The FEMs also provide buffering for LVL1 trigger processing and DCM data collection. This is carried out using an architecture that is pipelined and deadtimeless. All of this is controlled by the Master Timing System (MTS) that distributes the RHIC clocks. A Level-2 trigger (LVL2) gives additional discrimination. A description of the components and operation of the PHENIX On-Line system is given and the solution to a number of electronic infrastructure problems are discussed.

Original languageEnglish
Pages (from-to)560-592
Number of pages33
JournalNuclear Inst. and Methods in Physics Research, A
Volume499
Issue number2-3
DOIs
StatePublished - Mar 1 2003

Keywords

  • Data acquisition
  • Electronics
  • PHENIX
  • RHIC
  • Trigger

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