Target pedestal assembly and method of preserving the target
First Claim
1. A target pedestal assembly for a radiation delivery device, the target pedestal assembly comprising:
- a pedestal subassembly coupled to a linear accelerator of the radiation delivery device, the pedestal subassembly including a first recessed area and an aperture positioned within the first recessed area;
a cover coupled to the pedestal subassembly, the cover including a second recessed area complementary to the first recessed area, the second recessed area including an aperture positioned within the second recessed area, the aperture not extending through the cover;
a target including an aperture therethrough; and
a pin configured to receive the target through the aperture, to be received within the aperture of the pedestal subassembly, to be received within the aperture of the cover, and to position the target between the first recessed area of the pedestal subassembly and the second recessed area of the cover, the pin further configured to prevent the target from being pinched by one of the first recessed area and the second recessed area.
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Accused Products
Abstract
An x-ray target pedestal assembly and a method of protecting the x-ray target from breaking down as a result of the extreme heat that is produced when an electron beam is aimed at the target to produce x-rays. The target is submerged in cooling fluid and is rotated by a constant flow of the cooling fluid over and around the target in order to dissipate heat. The fluid is guided by integrated flow diverters in the target cover. The target may also be protectively coated either in its entirety or along the electron beam path in order to further protect it from the heat of the electron beam impact or from breakdown as a result of attack of free radicals or other chemically reactive components of the cooling fluid which are produced in the extreme target environment.
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Citations
52 Claims
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1. A target pedestal assembly for a radiation delivery device, the target pedestal assembly comprising:
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a pedestal subassembly coupled to a linear accelerator of the radiation delivery device, the pedestal subassembly including a first recessed area and an aperture positioned within the first recessed area; a cover coupled to the pedestal subassembly, the cover including a second recessed area complementary to the first recessed area, the second recessed area including an aperture positioned within the second recessed area, the aperture not extending through the cover; a target including an aperture therethrough; and a pin configured to receive the target through the aperture, to be received within the aperture of the pedestal subassembly, to be received within the aperture of the cover, and to position the target between the first recessed area of the pedestal subassembly and the second recessed area of the cover, the pin further configured to prevent the target from being pinched by one of the first recessed area and the second recessed area. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A target pedestal assembly for a radiation delivery device, the target pedestal assembly comprising:
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a housing coupled to a linear accelerator of the radiation delivery device, the housing defining a cavity and a channel adjacent to the cavity, the channel including a first flow diverter at a first end of the channel and a second flow diverter at a second end of the channel; a target positioned within the cavity and rotationally coupled to the housing, a portion of the target positioned within the channel, the target including a serrated edge arranged around a perimeter of the target; and a cooling medium positioned within the cavity and the channel, the target being protected with a material sufficient to reduce chemical reactivity between the target and the cooling medium. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35)
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36. A target pedestal assembly for a radiation delivery device, the target pedestal assembly comprising:
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a housing including a cavity and a cooling medium flowing within the cavity; and a target comprising tungsten and positioned within the cavity, the target submerged in the cooling medium, the target being protected with a material sufficient to reduce chemical reactivity between the target and the cooling medium, and wherein the cooling medium flowing within the cavity propels rotation of the target. - View Dependent Claims (37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49)
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50. A target pedestal assembly for a radiation delivery device, the target pedestal assembly comprising:
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a housing including a cavity and a cooling medium flowing within the cavity; and a target comprising tungsten and positioned within the cavity, the target submerged in the cooling medium, the target being protected with a material sufficient to reduce chemical reactivity between the target and the cooling medium; and a pin configured to rotationally couple the target to the housing. - View Dependent Claims (51, 52)
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Specification