Architecture of a distributed real-time system to control large high-energy physics experiments

  • Authors:
  • C. Gaspar;B. Franek;J. J. Schwarz

  • Affiliations:
  • CERN, European Organization for Nuclear Research, CH-1211 Geneva 23, Swizerland;Rutherford Appleton Laboratory, Chilton, Didcot, OX11 0QX, Great Britain;INSA L3I, B502 IF, 20 av. A. Einstein, F-69621 Villeurbanne Cedex, France

  • Venue:
  • Parallel and distributed real-time systems
  • Year:
  • 2001

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Abstract

The control of a large high energy physics experiment involves multiple domains with different requirements (some parts have to work in real time, some are safety critical, others have to be user-friendly). Usually these domains are engineered separately. In order to increase the operating efficiency and the reliability and maintainability of the system, Delphi project at CERN took a global approach in the design of the complete experiment control. This approach allowed for the interconnection of the various domains and led to a high degree of automation and an homogeneous interface to the full control system. This paper describes an architecture and a development framework that can handle the different and sometimes contradictory requirements of the different parts of the experiment's online system.