Low dark current linear accelerator
First Claim
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1. A linear accelerator, comprising:
- a cavity having an input aperture and an output aperture;
a particle source coupled to said input aperture, said input aperture having a radius greater than a radius of said output aperture; and
an anode plate, coupled between said particle source and said input aperture, said anode plate having a thickness and an opening forming said input aperture.
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Abstract
A method, system, and apparatus for providing reduced dark current in a linear accelerator includes a cavity having an input aperture and an output aperture, and a particle source coupled to the input aperture, the input aperture having a radius greater than a radius of the output aperture.
49 Citations
16 Claims
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1. A linear accelerator, comprising:
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a cavity having an input aperture and an output aperture;
a particle source coupled to said input aperture, said input aperture having a radius greater than a radius of said output aperture; and
an anode plate, coupled between said particle source and said input aperture, said anode plate having a thickness and an opening forming said input aperture. - View Dependent Claims (2, 3, 4, 5, 6)
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7. An accelerator, comprising
a plurality of accelerating cavities, disposed along a beam axis, including a first half cavity having an input aperture and an output aperture positioned along said beam axis; - and
an anode plate forming a wall of said first half cavity, said anode plate having an opening forming said input aperture, wherein said opening is sized to reduce the dark current generated by said anode plate.
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8. A cavity for a linear accelerator, comprising:
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an input aperture having a first radius; and
an output aperture having a second radius smaller that said first radius;
said input aperture receiving particles from a particle source, and directing said particles to said output aperture;
wherein a first wall of said cavity is an anode plate, wherein an opening of said anode plate forms said input aperture. - View Dependent Claims (9, 10, 11)
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12. A method for reducing dark current in an accelerator having a first half cavity with an input aperture and an output aperture, comprising:
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increasing a size of said input aperture to reduce a dark current beam generated from a wall of said first half cavity; and
modifying a thickness of said wall and a shape of an electron gun anode to achieve desired operating characteristics of said accelerator. - View Dependent Claims (13, 14, 15, 16)
increasing the height of said first half cavity to achieve desired operating characteristics of said accelerator.
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Specification