Antimatter Factory at CERN

The antiproton decelerator (AD) is fed by antiprotons from the target region that are focused into a particle beam and slowed down to 10% of the speed of light by electric fields inside the antiproton decelerator. From here they are sent into various AD experiments, which trap the antiprotons using powerful electric and magnetic fields. The experiments then measure the mass, charge, and magnetic properties of protons and antiprotons with high precision. They also look for the spectrum of antihydrogen atoms and how they are affected by gravity.