The present invention discloses a betatron (1), particularly in an x-ray inspection station, comprising a rotationally symmetrical inner yoke that is composed of two spaced-apart pieces (2a, 2b), an outer yoke (4) which connects the two pieces (2a, 2b) of the inner yoke, at least one main field coil (6a, 6b), and at least one toroidal betatron tube (5) located between the pieces (2a, 2b) of the inner yoke. At least part of the inner yoke and/or the outer yoke is made of a composite powder.