A particle therapy system for treating a patient, comprising: a charged particle generating system comprising: an ion source; an injector that injects an ion beam from the ion source into a beam track; a beam transport system defining the beam track and coupled to the charged particle generating system, the beam transport system comprising: a beam tube evacuated to a vacuum and defining the beam track, the beam tube comprising: an energizing segment circumscribing a volume to which the ion beam is to be delivered, an extracting segment terminating at a terminal end, and a transition segment that connects the energizing segment to the extracting segment, wherein the ion beam is received in the energizing segment from the injector; a plurality of magnets that adjust a trajectory of the ion beam in the beam tube as the ion beam passes through each of the plurality of magnets; an acceleration cavity that accelerates the ion beam as the ion beam passes through the acceleration cavity; and a beam delivery device coupled to the terminal end of the extracting segment and positioned inward from an outer perimeter of the energizing segment, the beam delivery device configured to direct the ion beam from the extracting segment toward a treatment area in the volume circumscribed by the energizing segment, wherein the energizing segment is positioned upon a platform proximate a mounting surface and extends in a first plane that is approximately parallel to the mounting surface; the extracting segment extends in a second plane that is parallel to the first plane and away from the first plane; and characterised in that the transition segment angles obtusely away from the energizing segment to form an angle of between about 115 degrees and about 155 degrees with respect to the first plane. a charged particle generating system comprising: an ion source; an injector that injects an ion beam from the ion source into a beam track; an ion source; an injector that injects an ion beam from the ion source into a beam track; a beam transport system defining the beam track and coupled to the charged particle generating system, the beam transport system comprising: a beam tube evacuated to a vacuum and defining the beam track, the beam tube comprising: an energizing segment circumscribing a volume to which the ion beam is to be delivered, an extracting segment terminating at a terminal end, and a transition segment that connects the energizing segment to the extracting segment, wherein the ion beam is received in the energizing segment from the injector; a plurality of magnets that adjust a trajectory of the ion beam in the beam tube as the ion beam passes through each of the plurality of magnets; an acceleration cavity that accelerates the ion beam as the ion beam passes through the acceleration cavity; and an energizing segment circumscribing a volume to which the ion beam is to be delivered, an extracting segment terminating at a terminal end, and a transition segment that connects the energizing segment to the extracting segment, wherein the ion beam is received in the energizing segment from the injector; a plurality of magnets that adjust a trajectory of the ion beam in the beam tube as the ion beam passes through each of the plurality of magnets; an acceleration cavity that accelerates the ion beam as the ion beam passes through the acceleration cavity; and a beam delivery device coupled to the terminal end of the extracting segment and positioned inward from an outer perimeter of the energizing segment, the beam delivery device configured to direct the ion beam from the extracting segment toward a treatment area in the volume circumscribed by the energizing segment, wherein the energizing segment is positioned upon a platform proximate a mounting surface and extends in a first plane that is approximately parallel to the mounting surface; the extracting segment extends in a second plane that is parallel to the first plane and away from the first plane; and characterised in that the transition segment angles obtusely away from the energizing segment to form an angle of between about 115 degrees and about 155 degrees with respect to the first plane.