Identity area
Reference code
Title
Date(s)
- 1992 (Creation)
Level of description
Extent and medium
Object
Context area
Name of creator
Biographical history
Repository
Archival history
Immediate source of acquisition or transfer
Content and structure area
Scope and content
This focusing horn was developed in 1992 by Remo Maccaferri, Jean Claude Schnuriger and Lubrano di Scampamorte and is still operating in the AD complex at CERN (as of 2017). This device could pulse at 400 KA (160 KA for the previous version). This enabled an antiproton collection ten times better than the old one. Firstly, protons were accelerated to an energy of 26 GeV/c and ejected onto a metal target. From the spray of emerging particles, the magnetic horn picked out 3.6 GeV antiprotons for injection into the AA through a wide-aperture focusing quadrupole magnet. For a million protons hitting the target, ten antiprotons were captured, 'cooled' and accumulated. It took 3 days to make a beam of 3 x 10^11 - three hundred thousand million - antiprotons. Originally magnetic focusing horns were developed by Simon van der Meer - see for example object AC-022 in this database.
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
138cm 40cm
Finding aids
Allied materials area
Existence and location of originals
Available, 282.
Existence and location of copies
Related units of description
Notes area
Note
Focusing horn and antiproton target fixed onto the same holder.
