Fabrication and beam test of a silicon-tungsten electromagnetic calorimeter
Rattachement africain : in, ch, nl, jp. Niveau de preuve : code pays fourni par la source.
Le résumé fourni par la source
A silicon-tungsten (Si-W) sampling calorimeter, consisting of 19 alternate layers of silicon pad detectors (individual pad area of 1 cm2) and tungsten absorbers (each of one radiation length), has been constructed for measurement of electromagnetic showers over a large energy range. The signal from each of the silicon pads is readout using an ASIC with a dynamic range from -300 fC to +500 fC. Another ASIC with a larger dynamic range, ± 600 fC has been used as a test study. The calorimeter was exposed to pion and electron beams at the CERN Super Proton Synchrotron (SPS) to characterise the response to minimum ionising particles (MIP) and showers from electromagnetic (EM) interactions. Pion beams of 120 GeV provided baseline measurements towards the understanding of the MIP behaviour in the silicon pad layers, while electron beams of energy from 5 GeV to 60 GeV rendered detailed shower profiles within the calorimeter. The energy deposition in each layer, the longitudinal shower profile, and the total energy deposition have been measured for each incident electron energy. Linear behaviour of the total measured energy (E) with that of the incident particle energy (E0) ensured satisfactory calorimetric performance. For a subset of the data sample, selected based on the cluster position of the electromagnetic shower of the incident electron, the dependence of the measured energy resolution on E0 has been found to be σ/E = (15.36/√E0(GeV) ⊕ 2.0) %.
Ce résumé expose les affirmations des auteurs. BNTIC ne l’interprète pas comme une validation indépendante des résultats.
Le contrôle bibliographique ouvert
Où se fait cette recherche
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Variable Energy Cyclotron Centre pays non établi dans la noticeOrganisme public
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Bhabha Atomic Research Centre Electronics Division pays non établi dans la noticeStructure de recherche
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European Organization for Nuclear Research pays non établi dans la noticeStructure de recherche
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Utrecht University Institute for Subatomic Physics pays non établi dans la noticeUniversité ou école supérieure
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National Institute for Subatomic Physics pays non établi dans la noticeStructure de recherche
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University of Tsukuba pays non établi dans la noticeUniversité ou école supérieure
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Experimental High Energy Physics and Application Group pays non établi dans la noticeInstitution
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ALICE pays non établi dans la noticeInstitution
Variable Energy Cyclotron Centre, Electronics Division — Bhabha Atomic Research Centre et European Organization for Nuclear Research, avec 5 autres affiliations.
Une affiliation ne permet pas de déduire la nationalité d’un auteur.