Particle beam transport system, and segment thereof

A segment of a particle beam transport system that includes a main line transporting a particle beam generated by an accelerator outward, a branch line branching from the main line, and irradiation equipments provided at respective ends of the branch line and configured to irradiate a patient with the particle beam, the segment being used for the particle beam transport system by being connected to at least one segment of same configuration and comprising:

• an entrance on which the particle beam is made incident;
• a passage through which the particle beam made incident from the entrance advances;
• and
• an exit from which the particle beam having advanced through the passage is emitted,
• wherein plural magnets are arranged in such a manner that beam characteristics of the particle beam are substantially equal at the entrance and at the exit,
• in the segment, constituent components and arrangement of the constituent components are made common, and at least a first bending electromagnet, a focus electromagnet, and a second bending electromagnet among the constituent components are arranged in this order, the focus electromagnet configured to focus an outer diameter of the particle beam by an action of a magnetic field and the bending electromagnet configured to bend a traveling direction of the particle beam by an action of a magnetic field.