The Antiproton Decelerator (AD) starts delivering low-energy antiprotons to antimatter experiments. This 188-metre-long machine decelerates antiprotons so that they can be trapped by experiments. The aim is to study antimatter in depth to determine any difference compared to ordinary matter. In 2017, a newer deceleration ring, ELENA (Extra Low ENergy Antiproton), is connected to the AD to further reduce the speed of the antiprotons.