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Basic concepts and architectural details of the Delphi trigger system
By: Bocci, V.; Booth, P.S.L.; Valls, J.; Valenti, G.; Treille, D.; Schulze, B.; Quinton, S.; Perrera, V.; Matthiae, G.; Lanceri, L.; Lacasta, C.; Jonker, M.; Jobansson, E.; Holmgren, S.-O.; Harris, F.; Giacomelli, P.; Gavilet, Ph.; Gaspar, C.; Fuster, J.; Formenti, F.; Donszelmann, M.; Charpentier, Ph.; Cerrito, L.; Carniel, R.; Canale, V.; Cairanti, S.; Bozzo, M.; Branco, A.; Buytaert, J.;
1994 / IEEE / 0-7803-2544-3
This item was taken from the IEEE Periodical ' Basic concepts and architectural details of the Delphi trigger system ' Delphi (DEtector with Lepton, Photon and Hadron Identification) is one of the four experiment of the LEP (Large Electron Positron) collider at CERN. The detector is laid out to provide a nearly 4/spl pi/ coverage for charged particle tracking, electromagnetic, hadronic calorimetry and extended particle identification. The trigger system consists of four levels. The first two are synchronous with the BCO (Beam Cross Over) and rely on hard-wired control units, while the last two are performed asynchronously with respect to the BCO and are driven by the Delphi host computers. The aim of this paper is to give a comprehensive global view of the trigger system architecture presenting, in detail the first two levels, their various hardware components and the latest modifications introduced in order to improve their performance and make more user friendly the whole software user interface.<
Software User Interface
Hard-wired Control Units
High Energy Physics Instrumentation Computing
Position Sensitive Particle Detectors