The disclosed subject matter includes devices and methods relating to vacuums and vacuum assemblies. In some aspects, methods and devices relate to a vacuum assembly including a body defining an evacuated vacuum chamber, a conduit in the body extending between the vacuum chamber and an exterior of the body, a plug at least partially occluding the conduit, and a seal between the plug and the body that seals the vacuum chamber from the exterior of the body.

X-ray tube systems and methods are described herein. A system for creating a vacuum environment in an X-ray tube assembly includes a vacuum tube having a first end and a second end, the first end of the vacuum tube welded to a support plate of the X-ray tube assembly, and the second end of the vacuum tube is pinched off or cold pressed to seal the vacuum environment within the X-ray tube insert of the X-ray tube assembly. A method of creating a vacuum within an X-ray tube assembly includes welding a first end of a vacuum tube to a support plate of the X-ray tube assembly, coupling a second end of the vacuum tube to a vacuum pump, using a vacuum pump to create a vacuum environment in the X-ray tube assembly and pinching off the second end of vacuum tube to seal the vacuum environment.

The present invention relates to a radiation generating tube. The radiation generating tube includes an envelope including an insulating tubular member having at least two openings, a cathode connected to one of the openings of the insulating tubular member, and an anode connected to the other of the openings of the insulating tubular member. At least one of the cathode and the anode and the insulating tubular member are bonded at a bonded portion with an electrically conductive bonding member; and the bonded portion bonded with the electrically conductive bonding member is coated with a dielectric layer.

The present invention relates to a radiation generating tube. The radiation generating tube includes an envelope including an insulating tubular member having at least two openings, a cathode connected to one of the openings of the insulating tubular member, and an anode connected to the other of the openings of the insulating tubular member. At least one of the cathode and the anode and the insulating tubular member are bonded at a bonded portion with an electrically conductive bonding member; and the bonded portion bonded with the electrically conductive bonding member is coated with a dielectric layer.

The present invention relates to a radiation generating tube. The radiation generating tube includes an envelope including an insulating tubular member having at least two openings, a cathode connected to one of the openings of the insulating tubular member, and an anode connected to the other of the openings of the insulating tubular member. At least one of the cathode and the anode and the insulating tubular member are bonded at a bonded portion with an electrically conductive bonding member; and the bonded portion bonded with the electrically conductive bonding member is coated with a dielectric layer.