Identity area
Reference code
Title
Date(s)
- 1986 (Creation)
Level of description
Extent and medium
Object
Context area
Repository
Archival history
Immediate source of acquisition or transfer
Content and structure area
Scope and content
Two wire chambers made originally for the R807 Experiment at CERN's Intersecting Storage Rings. In 1986 they were used for the PS 201 experiment (Obelix Experiment) at LEAR, the Low Energy Antiproton Ring. The group of researchers from Turin, using the chambers at that time, changed the acquisition system using for the first time 8 bit (10 bit non linear) analog to digital conversion for incoming signals from the chambers. The acquisition system was controlled by 54 CPU and 80 digital signal processors. The power required for all the electronics was 40 kW. For the period, this system was one of the most powerful on-line apparatus in the world. The Obelix Experiment was closed in 1996. To find more about how a wire chamber works, see the description for object CERN-OBJ-DE-038.
Appraisal, destruction and scheduling
Accruals
System of arrangement
Conditions of access and use area
Conditions governing access
Public
Conditions governing reproduction
Language of material
Script of material
Language and script notes
Physical characteristics and technical requirements
0,93 m 2,00 m 1,55 m
Finding aids
Allied materials area
Existence and location of originals
Available, ISR 2.
Existence and location of copies
Related units of description
Notes area
Note
These 2 wire chambers are spectacular. Holes can be cut to reveal the wires behind the layers of electronics.
