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Characterisation of different stages of hadronic showers using the CALICE Si-W ECAL physics prototype

  • CALICE collaboration
  • University of Bergen
  • University of Birmingham
  • Kyungpook National University
  • Northern Illinois University
  • Kyushu University
  • European Organization for Nuclear Research
  • LTHE (UMR 5564 CNRS/IRD/Université de Grenoble)
  • c/o DESY
  • Institute of Physics of the Czech Academy of Sciences
  • Universität Hamburg
  • University of Kansas
  • Centro de Investigaciones Energéticas Medioambientales y Tecnológicas (CIEMAT)
  • Johannes Gutenberg University
  • P.N. Lebedev Physical Institute of the Russian Academy of Sciences
  • National Research Nuclear University MEPhI
  • Max-Planck-Institut für Physik
  • Laboratoire de l'Accélérateur Linéaire
  • KEK (High Energy Accelerator Research Organization)
  • Universiteit Utrecht

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Résumé

A detailed investigation of hadronic interactions is performed using π-mesons with energies in the range 2–10 GeV incident on a high granularity silicon–tungsten electromagnetic calorimeter. The data were recorded at FNAL in 2008. The region in which the π-mesons interact with the detector material and the produced secondary particles are characterised using a novel track-finding algorithm that reconstructs tracks within hadronic showers in a calorimeter in the absence of a magnetic field. The principle of carrying out detector monitoring and calibration using secondary tracks is also demonstrated.

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