The first ingredient that is needed to create antihydrogen are positrons. The Positron (= positive electron), e+, is the antimatter counterpart of the electron, and was the first antimatter particle that was discovered. Positrons occur naturally at the β+ decay of radioactive material.
Our latest breakthrough, the first observation of the 1S-2S transition in trapped antihydrogen has been published in Nature and is the first time a spectral line has been observed in antihydrogen.
ELENA, a new ring that will slow the Antiproton Decelerator's antiprotons down even further has now finished construction and is entering the commissioning phase. Read about it here and check out the timelapse video of the construction below. For more information, read the CERN Courier article or visit the ELENA project website.