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Electronics of the H1 lead/scintillating-fibre calorimeters

  • R. D. Appuhn
  • , C. Arndt
  • , E. Barrelet
  • , R. Barschke
  • , U. Bassler
  • , F. Blouzon
  • , V. Boudry
  • , F. Brasse
  • , Ph Bruel
  • , D. Bruncko
  • , R. Buchholz
  • , B. Cahan
  • , S. Chechelnitski
  • , B. Claxton
  • , G. Cozzika
  • , J. Cvach
  • , S. Dagoret-Campagne
  • , W. D. Dau
  • , H. Deckers
  • , T. Deckers
  • F. Descamps, M. Dirkmann, J. Dowdell, C. Drancourt, O. Durant, V. Efremenko, E. Eisenhandler, A. N. Eliseev, G. Falley, J. Ferencei, M. Fleischer, B. Fominykh, K. Gadow, U. Goerlach, L. A. Gorbov, I. Gorelov, M. Grewe, L. Hajduk, I. Herynek, J. Hladký, M. Hütte, H. Hutter, M. Janata, W. Janczur, J. Janoth, L. Jönsson, I. Kacl, H. Kolanoski, V. Korbel, F. Kriván, D. Lacour, B. Laforge, F. Lamarche, M. P.J. Landon, J. F. Laporte, H. Lebollo, A. Le Coguie, F. Lehner, R. Maracek, P. Matricon, K. Meier, A. Meyer, A. Migliori, F. Moreau, G. Müller, P. Murín, V. Nagovizin, T. C. Nicholls, D. Ozerov, J. P. Passerieux, E. Perez, J. P. Pharabod, R. Pöschl, Ch Renard, A. Rostovtsev, C. Royon, K. Rybicki, S. Schlief, K. Schmitt, A. Schuhmacher, A. Semenov, V. Shekelyan, Y. Sirois, P. A. Smirnov, V. Solochenko, J. Spalek, S. Spielmann, H. Steiner, A. Stellberger, J. Stiewe, M. Taševský, V. Tchernyshov, K. Thiele, E. Tzamariudaki, S. Valkár, C. Vallée, A. Vallereau
  • c/o DESY
  • Universités Paris VI and VII
  • Institute of Experimental Physics Slovak Academy of Sciences
  • Institut Pierre Simon Laplace, CNRS and CEA
  • Institute for Theoretical and Experimental Physics
  • CCLRC Rutherford Appleton Laboratory
  • Institute of Physics of the Czech Academy of Sciences
  • Christian-Albrechts-University Kiel
  • University of Dortmund
  • Institut Laue-Langevin
  • Queen Mary University of London
  • P.N. Lebedev Physical Institute of the Russian Academy of Sciences
  • Université de Strasbourg
  • Institute for Nuclear Physics
  • University of Heidelberg
  • Lund University
  • University of Birmingham
  • Ernest Orlando Lawrence Berkeley National Laboratory
  • Charles University
  • Aix-Marseille Université

Résultats de recherche: Contribution à un journalArticleRevue par des pairs

2 Citations (Scopus)

Résumé

The electronic system developed for the SpaCal lead scintillating-fibre calorimeters of the H1 detector in operation at the HERA ep collider is described in detail and the performance achieved during H1 data taking is presented. The 10 MHz bunch crossing rate of HERA puts severe constraints on the requirements of the electronics. The energy and time readout are performed, respectively, with a 14-bit dynamic range and with a resolution of approximately 0.4 ns. The trigger branch consists of a nanosecond-resolution calorimetric time of flight for background rejection and an electron trigger based on analog `sliding windows'. The on-line background rejection currently achieved is approximately 106. The electron trigger allows a low-energy trigger threshold to be set at approximately 0.50±0.08 (RMS) GeV with an efficiency ≥99.9%. The energy and time performance of the readout and trigger electronics is based on a newly developed low noise (σnoise to approximately 0.4 MeV) wideband (f≤200 mHz) preamplifier located at the output of the photo-multipliers which are used for the fibre light readout in the approximately 1 T magnetic field of H1.

langue originaleAnglais
Pages (de - à)518-537
Nombre de pages20
journalNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Volume426
Numéro de publication2
Les DOIs
étatPublié - 1 mai 1999

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