Systems and methods utilizing a triode hollow cathode electron gun for linear particle accelerators
AssigneeAltair Technologies, Inc.
InventorsCurtis G. Allen, Christopher P. Ferrari, Adam J. Mitchell
Life of this patent
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Abstract
The present invention generally relates to systems and methods for generating controllable beam of electrons using a hollow-cathode triode electron gun that substantially mitigate impact of back-streaming electrons.
Claims24
A vacuum electron device (VED) configured to host accelerated beam of electrons, the VED comprising:
- a triode hollow-cathode electron gun configured to generate controllable electron beams and to substantially mitigate impact of back-streaming beam of electrons, the electron gun including:
- a hollow cathode configured to emit a beam of electrons;
- a heating filament configured to provide heat to the hollow cathode through a thermionic emission process;
- an anode configured to attract and focus the beam of electrons emitted from the hollow cathode by maintaining a positive voltage potential relative to the cathode;
- a post substantially centered relative to an axis of the hollow cathode and configured to maintain a shape and a trajectory of the emitted beam of electrons;
- and
- a hollow grid configured to control or modulate and focus the beam of electrons emitted from the hollow cathode and further configured to accommodate the post;
- and
- at least two resonant cavities configured to interact with the beam of electrons.
A triode hollow-cathode electron gun configured to provide electrons and substantially mitigates the impact of back-streaming electrons, the triode hollow-cathode electron gun comprising;
- a hollow cathode configured to emit a beam of electrons;
- a heating filament configured to provide heat to the hollow cathode through a thermionic emission process;
- an anode configured to attract and focus the beam of electrons emitted from the hollow cathode by maintaining a positive voltage potential relative to the cathode;
- a post substantially centered relative to an axis of the hollow cathode and configured to maintain a shape and a trajectory of the emitted beam of electrons;
- and
- a hollow grid configured to control the beam of electrons emitted from the hollow cathode and further configured to accommodate the post.
A method for generating controllable beam of electrons while substantially mitigating impact of back-streaming of the electrons by a triode hollow-cathode electron gun, the method of generating beams of electrons comprising:
- emitting electrons from a hollow cathode configured to emit a beam of electrons;
- heating the hollow cathode by a heating filament through a thermionic emission process;
- attracting and focusing the beam of electrons emitted from the hollow cathode by maintaining a positive voltage potential relative to the cathode on an anode;
- maintaining a shape and a trajectory of the emitted beam of electrons by a post substantially centered relative to an axis of the hollow cathode;
- and
- controlling the beam of electrons emitted from the hollow cathode by a hollow grid and further accommodating the post.
Dependencies are inferred from the claim text.