Zone d'identification
Cote
Titre
Date(s)
Niveau de description
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
A good dozen different targets are available for ISOLDE, made of different materials and equipped with different kinds of ion-sources, according to the needs of the experiments. Each separator (GPS: general purpose; HRS: high resolution) has its own target. Because of the high radiation levels, robots effect the target changes, about 80 times per year. In the standard unit shown in picture _01, the target is the cylindrical object in the front. It contains uranium-carbide kept at a temperature of 2200 deg C, necessary for the isotopes to be able to escape. At either end, one sees the heater current leads, carrying 700 A. The Booster beam, some 3E13 protons per pulse, enters the target from left. The evaporated isotope atoms enter a hot-plasma ion source (the black object behind the target). The whole unit sits at 60 kV potential (pulsed in synchronism with the arrival of the Booster beam) which accelerates the ions (away from the viewer) towards one of the 2 separators.
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
40 cm 45 cm To be lifted using the top “hook” 5'000 CHF (insurance purposes) ~13 kg
Instruments de recherche
Zone des sources complémentaires
Existence et lieu de conservation des originaux
On loan, 282.