Charged hadron beam delivery

A method for delivering charged hadron radiation to a target, the method comprising:

• moving a couch with a target in a translation direction,
• scanning a hadron pencil beam over said target in an first scanning direction and a second scanning direction, the second scanning direction being substantially parallel with the translation direction Y′,
• wherein the scanning in the second scanning direction is limited to a maximum scanning amplitude AY, and wherein said moving of the couch and said scanning are performed simultaneously in a synchronized manner, so as to deliver charged hadron radiation to a target over a target size being larger in the Y direction than the maximum scanning amplitude AY.

A controller for controlling a charged hadron therapy system,

• the controller being programmed for controlling translating of a target on a couch along a translation direction and for controlling scanning a hadron pencil beam over said target in an first scanning direction and a second scanning direction substantially parallel with the translation direction,
• i) wherein the controller is programmed for controlling scanning of the hadron pencil beam in the second scanning direction with a maximum scanning amplitude AY, and the controller is programmed for controlling simultaneously moving the couch along said translation direction and scanning the hadron pencil beam in X and Y in a synchronized manner, so as to deliver charged hadron radiation to a target over a target size being larger in the Y direction than the maximum scanning amplitude AY.