Trapped Antihydrogen in Its Ground State

Recently, the ATRAP collaboration reported the trapping of ground-state antihydrogen atoms (the simplest antimatter atom). The eventual goal of ATRAP is to perform precision measurements on these trapped atoms. A comparison of such precision measurements to similar measurements performed on ordinary hydrogen atoms will give a precise test of matter/antimatter symmetry (CPT). Antihydrogen is produced from trapped antiprotons and positrons (the antimatter equivalents of protons and electrons). This talk will detail the methods used to produce antihydrogen atoms from these constituents and to trap them.