The Penning traps may also type antihydrogen by combining antiprotons with the positrons. ELENA (Additional Low Power Antiproton) is a 30 m hexagonal storage ring situated inside the Ad complex. It’s designed to further decelerate the antiproton beam to an power of 0.1 MeV for extra precise measurements. GBAR was the first experiment to use a beam from ELENA, with the rest of the Ad experiments to comply with go well with after LS2 when beam transfer lines from ELENA can have been laid to all of the experiments utilizing the ability. ATHENA, Ad-1 experiment, was an antimatter analysis challenge