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US 7,116,064 B1Granted
Axisymmetric emittance-compensated electron gun
AssigneeAdvanced Energy Systems, Inc.
InventorHans Peter Bluem
Life of this patent
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Abstract
An electron gun includes a cathode, a cavity, and an energy input. The cavity resonates at a particular frequency, and the cathode generates an electron beam along its longitudinal axis when driven by resonant electromagnetic radiation of the particular frequency. The energy input introduces electromagnetic radiation of the particular frequency into the cavity along the longitudinal axis of the cathode.
Claims19
An electron gun, comprising:
- a cathode having a longitudinal axis and operable to generate an electron beam on the longitudinal axis when driven by resonant electromagnetic radiation of a particular frequency;
- a cavity surrounding the cathode and operable to resonate when electromagnetic radiation of the particular frequency is introduced into the cavity;
- and
- an energy input coupled to the cavity and operable to introduce electromagnetic radiation of the particular frequency into the cavity along the longitudinal axis of the cathode.
1 more element
An electron gun, comprising:
- a cavity operable to resonate when electromagnetic radiation of a particular frequency is introduced into the cavity;
- and
- a coaxial line coupled to the cavity having a center conductor that extends into the cavity, the center conductor operable to produce an electron beam along a longitudinal axis of the coaxial cable when driven by resonant electromagnetic radiation of the particular frequency, wherein the coaxial line is operable to introduce electromagnetic radiation of the particular frequency into the cavity along the longitudinal axis of the coaxial cable.
A method of generating an electron beam, comprising:
- providing a cavity operable to resonate when electromagnetic radiation of a particular frequency is introduced into the cavity;
- providing a cathode within the cavity operable to generate an electron beam on a longitudinal axis when being driven by resonant electromagnetic radiation of the particular frequency;
- and
- introducing electromagnetic radiation of the particular frequency into the cavity along the longitudinal axis of the cathode.
1 more element
Dependencies are inferred from the claim text.