350 articles – 2735 Notices  [english version]
 HAL : in2p3-00001092, version 1
 Nuclear Instruments and Methods in Physics Research Research: Accelerators, Spectrometers, Detectors and Associated Equipment 385 (1997) 47-57
 Construction and test of a fine-grained liquid argon preshower prototype
 RD3 Collaboration(s)
 (1997)
 A separate liquid argon preshower detector consisting of two layers featuring a fine granularity of 2.5~10$^{\mathrm{-3}}$ was studied by the RD3 collaboration. A prototype covering approximately 0.8 in pseudo-rapidity and 9 degrees in azimuth was built and tested at CERN in July 94. CMOS and GaAs VLSI preamplifiers were designed and tested for this occasion. The combined response of this detector and an accordion electromagnetic calorimeter prototype to muons, electrons and photons is presented. For minimum ionizing tracks a signal-to-noise ratio of 4.5 per preshower layer was measured. Above 150~GeV the space resolution for electrons is better than 250~$\mu$m in both directions. The precision on the electromagnetic shower direction, determined together with the calorimeter, is better than 4 mrad above 50~GeV. It is concluded that the preshower detector would adequately fulfil its role for future operation at CERN Large Hadron Collider.
 Thème(s) : Physique/Physique/Instrumentations et Détecteurs
Liste des fichiers attachés à ce document :
 PDF
 democrite-00001092.pdf(959.7 KB)
 in2p3-00001092, version 1 http://hal.in2p3.fr/in2p3-00001092 oai:hal.in2p3.fr:in2p3-00001092 Contributeur : Nicole Berger <> Soumis le : Mardi 30 Mars 1999, 15:22:54 Dernière modification le : Lundi 11 Avril 2005, 13:53:21