Zone d'identification
Cote
Titre
Date(s)
- 1970 (Création/Production)
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
This is a collision region from the worlds first proton collider, the Intersecting Storage Rings. The ISR was used at CERN from 1971-84 to study proton-proton collisions at the highest energy then available (60GeV). When operational, ISR collision regions were surrounded by detectors as shown in the photo. In 1972, the surprising discovery of fragments flying out sideways from head-on proton-proton collisions was the first evidence of quark-quark scattering inside the colliding protons . This was similar to Rutherfords observation in 1911 of alpha particles scattering off the tiny nucleus inside atoms of gold. The ISR beamtubes had to be as empty as outer space, a vacuum 100 000 times better than other CERN machines at the time.
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
216 kg
Instruments de recherche
Zone des sources complémentaires
Existence et lieu de conservation des originaux
On loan, 143.
Existence et lieu de conservation des copies
Unités de description associées
Zone des notes
Note
<2> short texts about the ISR.
