Patent ID: 8053746

Claim:
An irradiation device for irradiating an irradiation object with heavy charged particles at an irradiation station, comprising a particle accelerator for providing a particle beam and a swivelling device for swivelling the particle beam impinging on the irradiation object, wherein the swivelling device comprises a carrier pivotable about a swivel axis, wherein the particle accelerator is mounted on the pivotable carrier, wherein the pivotable carrier is a pivotable gantry frame, wherein the pivotable carrier has a substantially U-shaped structure with two legs, wherein the swivel axis extends substantially vertically through the two legs of the substantially U-shaped structure, wherein the particle accelerator is mounted in a terminal region of only one of the two legs of the substantially U-shaped structure, wherein another of the two legs of the substantially U-shaped structure comprises an opening and/or recess in a vicinity of the swivel axis, and wherein the irradiation station is located in a vicinity of the opening and/or recess.