Identity area
Reference code
Heritage collection CERN-OBJ-CERN-OBJ-DE-026
Title
Charpak hemispherical wire chamber
Date(s)
- 1970 (Creation)
Level of description
Item
Extent and medium
Object
Context area
Repository
Archival history
Immediate source of acquisition or transfer
Content and structure area
Scope and content
<3> pieces. Mesures are of the largest one. Multi-wire detectors contain layers of positively and negatively charged wires enclosed in a chamber full of gas. A charged particle passing through the chamber knocks negatively charged electrons out of atoms in the gas, leaving behind positive ions. The electrons are pulled towards the positively charged wires. They collide with other atoms on the way, producing an avalanche of electrons and ions. The movement of these electrons and ions induces an electric pulse in the wires which is collected by fast electronics. The size of the pulse is proportional to the energy loss of the original particle.
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
With box 1,00m 0,20m
Finding aids
Allied materials area
Existence and location of originals
Available, 282.
Existence and location of copies
Related units of description
Notes area
Alternative identifier(s)
CDS number
43900
Object Number
OBJOBJ 0000175
