Zone d'identification
Cote
Heritage collection CERN-OBJ-CERN-OBJ-DE-057
Titre
Array of lead-glass blocks from OPAL
Date(s)
Niveau de description
Pièce
Étendue matérielle et support
Object
Zone du contexte
Histoire archivistique
Source immédiate d'acquisition ou de transfert
Zone du contenu et de la structure
Portée et contenu
OPAL was one of the 4 experiments at CERN's Large Electron Positron collider (LEP) which ran from 1989 - 2000. This array of 96 lead glass bricks formed part of the OPAL electromagnetic calorimeter. In total, there were 9440 lead glass counters in the OPAL electromagnetic calorimeter, made of Schott type SF57 glass and each block weighs about 25 kg and consists of 76% PbO by weight. Each block has a Hamamatsu R2238 photomultiplier glued on to it. The complete detector was in the form of a cylinder 7m long and 6m in diameter. It was used to measure the energy of electrons and photons produced in LEP electron positron collisions.
Évaluation, élimination et calendrier de conservation
Accroissements
Mode de classement
Zone des conditions d'accès et d'utilisation
Conditions d'accès
Public
Conditions de reproduction
Langue des documents
Écriture des documents
Notes de langue et graphie
Caractéristiques matérielle et contraintes techniques
1m 2m 5 tons
Instruments de recherche
Zone des sources complémentaires
Existence et lieu de conservation des originaux
Available, 282.
Existence et lieu de conservation des copies
Unités de description associées
Zone des notes
Identifiant(s) alternatif(s)
CDS number
43978
Object Number
OBJOBJ 0000257
