Published Documents on the Trigger

Talks and Papers for Conferences

  1. Experience with the First Level Trigger of H1
    F. Sefkow et al., 1994 Nuclear Science Symposium, Norfolk, Virginia, USA, October 1994.
    IEEE Trans. Nucl. Sci., Vol 42, No. 4 (1995) 900

  2. Concept, Design and Performance of the Second Level Triggers of the H1 Detector
    T. Nicholls et al., IEEE 1997 Nuclear Science Symposium,
    Albuquerque, New Mexico, USA, November 1997.
    IEEE Trans. Nucl. Sci., Vol 45, No. 3 (1998) 810

  3. A General Scheme for Optimization of Trigger Rates in an Experiment with Limited Bandwidth
    H.C. Schultz-Coulon et al., IEEE 1998 Nuclear Science Symposium, Toronto, Canada, November 1998.
    IEEE Trans. Nucl. Sci., Vol 46 (1999) 915

  4. The Fourth Level Trigger Scheme of the H1 Collaboration at HERA;
    Practical Performance and Future Prospects

    A. Campbell et al., at CHEP 1998, Chicago
    Only transparencies available; send mail to: Vincent Lemaitre

Papers in Physics or Instrumentation Journals

  1. The H1-Detector at HERA
    Nuclear Instruments and Methods (in two parts: A 386 1997, pages 310-347 and 348-396)
    Chapter5: Trigger
    Fig. 12 (Fig 8.1) ps-file [1292 k]
    a) z- vertex reconstruction by building a histogram, which didplays a peak
    at the true vertex location.
    b) Block diagram of the z- vertex trigger.
    Fig. 13 (Fig 8.2) ps-file [655 k]
    Block diagram of the drift chamber trigger.
    Fig. 14 (Fig 8.3) ps-file [825 k]
    Block diagram of the liquid argon calorimeter trigger.
    Fig. 15 (Fig 8.4) ps-file [612 k]
    Cross section through the plane of the liquid argon calorimeter showing the
    pointing geometry of the trigger big towers.
    Fig. 16 (Fig 8.5) ps-file [468 k]
    BEMC single electron trigger efficiency for thresholds CL1 and CL2.
    Fig. 17 (Fig 8.6) ps-file [689 k]
    Principle of track recognition in the forward muon trigger.
    Fig. 18 (Fig 8.7) ps-file [493 k]
    The frontend response time as a function of the instantaneous input frequency
    (1/time between consecutive events).

  2. Realization of a Second Level Neuronal Network Trigger
    of the H1 Experiment at HERA

    J. Koehne et al.,
    Proceedings of AIHENP, Lausanne, World Scientific, 1996

  3. A RISC Multiprocessor Event Trigger for the Data Acquisiton
    System of the H1 Experiment at HERA

    A. Campbell,
    IEEE Trans. Nucl. Sci., Vol 39 (1992) 255


Last modified: Thu Sep 25 16:20:57 MEST 2003 by Martin zur Nedden (