Particle beam therapy system
View Patent ↗A particle beam transport section comprises a horizontal deflection electromagnet which deflects a particle beam to a direction which is parallel to an accelerator median plane of a circular accelerator, a first perpendicular electromagnet which deflects a particle beam whose travelling direction is deflected by the horizontal deflection electromagnet to a direction which is different from a direction which is parallel to the accelerator median and a second perpendicular electromagnet which deflects the particle beam whose travelling direction is deflected by the first perpendicular deflection to a direction which is parallel to the accelerator median plane, wherein the horizontal deflection electromagnet is provided on a floor which is different from a floor where a particle beam irradiation unit is provided.
1. A particle beam therapy system comprising:
a circular accelerator which accelerates a particle beam,
a particle beam transport section which transports the particle beam which is extracted from the circular accelerator and
a particle beam irradiation unit which irradiates the particle beam which is transported by the particle beam transport section which is provided on a floor which is different from a floor where the circular accelerator is provided,
wherein the particle beam transport section comprises a horizontal deflection electromagnet which deflects the particle beam, which is travelling in a plane which is parallel to an accelerator median plane of the circular accelerator, in the plane which is parallel to the accelerator median plane of the circular accelerator,
a first perpendicular deflection electromagnet which deflects the particle beam whose travelling direction is deflected by the horizontal deflection electromagnet to a direction which is different from a direction which is parallel to the accelerator median plane and
a second perpendicular deflection electromagnet which deflects the particle beam whose direction is deflected by the first perpendicular deflection electromagnet to a direction which is parallel to the accelerator median plane,
wherein the horizontal deflection electromagnet is provided on a floor which is different from a floor where the particle beam irradiation unit is provided.
2. The particle beam therapy system as claimed in claim 1 ,
wherein a particle beam irradiation unit is arranged at a position which overlaps with the particle beam transport section on a floor where the horizontal deflection electromagnet is provided.
3. The particle beam therapy system as claimed in claim 1 ,
wherein the particle beam irradiation unit has a rotating gantry.
4. The particle beam therapy system as claimed in claim 1 ,
wherein the horizontal deflection electromagnet comprises a plurality of deflection electromagnets and all of the horizontal deflection electromagnets are provided on a floor which is different from a floor where the particle beam irradiation unit is provided.
5. The particle beam therapy system as claimed in claim 4 ,
wherein a plurality of the particle beam irradiation units are provided and at least one of the horizontal deflection electromagnets constituting the plurality of deflection electromagnets has a function to branch a particle beam to two directions.
6. The particle beam therapy system as claimed in claim 1 ,
wherein a travelling direction of the particle beam which is inputted to the first perpendicular deflection electromagnet is opposite to a travelling direction of the particle beam which is outputted from the second perpendicular deflection electromagnet.