All the traps used in our experiment are variations of Penning traps where the radial confinement is provided by an strong magnetic field and the axial confinement is provided by electrical potentials applied to a series of cylindrical shaped electrodes. This is a standard technique for trapping charged particles and has been used for many years to trap electrons, protons, ions and also antiprotons and positrons. For the trapping scheme to work the particles, however, need to be charged. Thus neutral atoms are NOT trapped by these traps; a feature we use to observe antihydrogen.
The figure below shows an overview over our entire experiment. The antiprotons from CERNs Antiproton Decelerator come in from the left. The positron source is situated to the far right. The mixing of the two particles, to try to get them to make antihydrogen, takes place in the Mixing Trap (here called Recombination Trap), which is situated inside a cryogenically cooled (~10 K) coldnose that is inserted into our 3 Tesla superconducting magnet. The trap is surrounded by the ATHENA detector, which detects the annihilation of the antiprotons as well as the positrons with a very good time and space resolution.
Antimatter: Mirror of the Universe (Live from CERN webcast)
What is antimatter?(Scientific American)
Antimatter Makers Chase Ultimate Energy Source (Space.com)
Through the Looking Glass (Nature)
CERN's New Antimatter Factory (CERN announcement)
LVJ - Last modified
September 14, 2002