PARTICLE BEAM IRRADIATION APPARATUS
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Accused Products
Abstract
In order to obtain a particle beam irradiation apparatus that enlarges the dose distribution of beam spots while suppressing a decrease of the maximum available range of a charged particle beam, the particle beam irradiation apparatus includes a particle beam acceleration means; particle beam transport means; scanning apparatus that includes first scanning means and second scanning means, and two-dimensionally scans the beam; and irradiation control means that controls the scanning apparatus so as to irradiate the beam onto a target region including a plurality of small regions. The irradiation control means controls the first scanning means so as to scan the beam over a small region serving as an irradiation subject among the plurality of the small regions, and controls the second scanning means so as to change the small region serving as the irradiation subject to be a different small region among the plurality of the small regions.
45 Citations
37 Claims
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1-17. -17. (canceled)
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18. A particle beam irradiation apparatus comprising:
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a particle beam acceleration means that accelerates a charged particle beam; a particle beam transport means that transports a charged particle beam launched from the particle beam acceleration means; a scanning apparatus that includes a first scanning means and a second scanning means, both of which generate a deflection magnetic field or a deflection electric field in directions that are perpendicular to a traveling direction of the charged particle beam, and two-dimensionally scans the charged particle beam transported by the particle beam transport means; and an irradiation control means that controls the scanning apparatus so as to irradiate the charged particle beam onto a target region including a plurality of small regions, wherein the irradiation control means controls the first scanning means so as to scan the charged particle beam over a small region serving as an irradiation subject among the plurality of the small regions, and controls the second scanning means so as to change the small region serving as the irradiation subject to be a different small region among the plurality of the small regions. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
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30. A particle beam irradiation apparatus comprising:
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a particle beam acceleration means that accelerates a charged particle beam; a particle beam transport means that transports a charged particle beam launched from the particle beam acceleration means; a scanning apparatus that generates a deflection magnetic field or a deflection electric field in directions that are perpendicular to a traveling direction of the charged particle beam, and two-dimensionally scans the charged particle beam transported by the particle beam transport means; and an irradiation control means that controls the scanning apparatus so as to irradiate the charged particle beam onto a target region including a plurality of small regions, wherein the irradiation control means outputs to the irradiation apparatus a first control signal for controlling the scanning apparatus so as to scan the charged particle beam over a small region serving as an irradiation subject among the plurality of the small regions, and a second control signal for controlling the scanning apparatus so as to change the small region serving as the irradiation subject to be a different small region among the plurality of the small regions. - View Dependent Claims (31, 32)
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33. A particle beam irradiation apparatus comprising:
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a particle beam acceleration means that accelerates a charged particle beam; a particle beam transport means that transports a charged particle beam launched from the particle beam acceleration means; a scanning apparatus that scans the charged particle beam transported by the particle beam transport means, and includes a first scanning means and a second scanning means; and an irradiation control means that controls the scanning apparatus so as to irradiate the charged particle beam onto a target region including a plurality of small regions, wherein the irradiation control means controls the first scanning means so as to scan the charged particle beam over a small region serving as an irradiation subject among the plurality of the small regions, controls the second scanning means so as to change the small region serving as the irradiation subject to be a different small region among the plurality of the small regions, and controls so that the scanning speed of the charged particle beam in the target region by the first scanning means is faster than the scanning speed of the charged particle beam in the target region by the second scanning means. - View Dependent Claims (34, 35, 36)
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37. A particle beam irradiation apparatus comprising:
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a particle beam acceleration means that accelerates a charged particle beam; a particle beam transport means that transports a charged particle beam launched from the particle beam acceleration means; a scanning apparatus that scans a charged particle beam transported by the particle beam transport means; and an irradiation control means that controls the scanning apparatus so as to irradiate the charged particle beam onto a target region including a plurality of small regions, wherein the irradiation control means outputs to the scanning apparatus a first control signal for controlling the scanning apparatus so as to scan the charged particle beam over a small region serving as an irradiation subject among the plurality of the small regions, and a second control signal for controlling the scanning apparatus so as to change the small region serving as the irradiation subject to be a different small region among the plurality of the small regions; and the scanning speed of the charged particle beam in the target region by the first scanning means is faster than the scanning speed of the charged particle beam in the target region by the second scanning means.
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Specification