Particle beam irradiation system and method for controlling the particle beam irradiation system
First Claim
1. A particle beam irradiation system comprising:
- a particle beam generation part;
a particle beam irradiation part where a charged particle beam that is generated in the particle beam generation part is irradiated on an irradiation target and;
an irradiation control part that controls the charged particle beam to be irradiated;
wherein the particle beam irradiation part comprises;
a beam scanner that scans the charged particle beam laterally in two dimensions that is perpendicular to the irradiation direction of the charged particle beam; and
a beam diameter changer that changes the beam diameter of the charged particle beam;
wherein the irradiation control part comprises;
an energy setting controller that sets the energy of the charged particle beam;
a beam scanning controller that controls the beam scanner; and
a beam diameter controller that controls the beam diameter changer;
wherein the irradiation control part sets the beam diameter of the charged particle beam by the beam diameter controller to be a first beam diameter, the charged particle beam is scanned step-wise by the beam scanning controller so as to irradiate the charged particle beam on a predetermined region of the irradiation target, after that, the beam diameter of the charged particle beam is set by the beam diameter controller to be a second diameter that is different from the first beam diameter, and the charged particle beam is scanned step-wise by the beam scan controller so as to control the charged particle beam to irradiate on a region that is overlapped with at least a part of the predetermined part of the irradiation target.
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Accused Products
Abstract
There is provided a particle beam irradiation system so as to provide the dose distribution having more accuracy. An irradiation control part comprises an energy setting controller that sets the energy of a charged particle beam, a beam scanning controller that controls a beam scanner, and a beam diameter changer to control a beam diameter changer, wherein the irradiation control part sets a beam diameter of the charged particle beam to be a first beam diameter by the beam diameter changer, the charged particle beam is scanned step-wise by the beam scanning controller so as to irradiate the charged particle beam on a predetermined region of the irradiation target, after that, the beam diameter of the charged particle beam is set by the beam diameter controller to be a second beam diameter that is different from the first beam diameter, and the charged particle beam is scanned step-wise by the beam scan controller so as to control the charged particle beam to irradiate on a region that is overlapped with at least a part of the predetermined part of the irradiation target.
84 Citations
9 Claims
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1. A particle beam irradiation system comprising:
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a particle beam generation part; a particle beam irradiation part where a charged particle beam that is generated in the particle beam generation part is irradiated on an irradiation target and; an irradiation control part that controls the charged particle beam to be irradiated; wherein the particle beam irradiation part comprises; a beam scanner that scans the charged particle beam laterally in two dimensions that is perpendicular to the irradiation direction of the charged particle beam; and
a beam diameter changer that changes the beam diameter of the charged particle beam;wherein the irradiation control part comprises;
an energy setting controller that sets the energy of the charged particle beam;a beam scanning controller that controls the beam scanner; and a beam diameter controller that controls the beam diameter changer; wherein the irradiation control part sets the beam diameter of the charged particle beam by the beam diameter controller to be a first beam diameter, the charged particle beam is scanned step-wise by the beam scanning controller so as to irradiate the charged particle beam on a predetermined region of the irradiation target, after that, the beam diameter of the charged particle beam is set by the beam diameter controller to be a second diameter that is different from the first beam diameter, and the charged particle beam is scanned step-wise by the beam scan controller so as to control the charged particle beam to irradiate on a region that is overlapped with at least a part of the predetermined part of the irradiation target. - View Dependent Claims (2, 3, 4, 5)
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6. A method for controlling a particle beam irradiation system in which a charged particle beam that is generated in a particle generation part is irradiated on an irradiation target,
wherein a beam diameter of the charged particle beam is set to be a first beam diameter, the charged particle beam is scanned step-wise so as to irradiate the charged particle beam on a predetermined region of the irradiation target, after that, the beam diameter of the charged particle beam is set to be a second diameter that is different from the first diameter, and the charged particle beam is scanned step-wise so as to control the charged particle beam to irradiate on a region that is overlapped with at least a part of the predetermined part of the irradiation target.
Specification