The present disclosure relates to a high voltage vacuum tube including: a vacuum tube envelope comprising an interior; an anode assembly disposed within the interior of the vacuum tube envelope; and a cathode assembly disposed within interior of the vacuum tube envelope that emits an electrode beam to strike a target surface of the anode assembly and form electromagnetic radiation. The high voltage vacuum tube includes a braze assembly, said braze assembly comprising a first component and a second component joined together by a first braze joint, said first braze joint comprising a composition including no more than 18.0 wt % in total of one of more precious metals selected from Au, Pd and Pt, where at least a portion of the braze joint is exposed to the interior of the vacuum tube envelope.

A composite target is provided and is interacted with an electron to generate an X-ray, and an energy of the electron can be changed by controlling a tube voltage at least. The composite target includes a target body and an interposing layer which is connected with the target body. The interposing layer moves a highest peak of an energy spectrum of the X-ray toward a high energy direction. The interposing layer may be a single metal or a metal mixture. Not only a low energy photon of the X-ray can be filtered by the interposing layer, but also a distribution of the low energy photon of the X-ray can be increased by increasing a thickness of the interposing layer. As the tube voltage is enhanced, an amount of a high energy photon of the X-ray generated is dramatically increased. An X-ray tube containing the above composite target is also provided.

In at least one embodiment an X-ray source includes an electron source configured to emit electrons, an acceleration set-up configured to accelerate the emitted electrons and a transmission window downwards of the acceleration set-up, the transmission window configured to let through X-rays generated by the accelerated electrons, wherein the transmission window incudes a carbon carrier, and wherein the carbon carrier includes sp2-hybridized carbon.

A rotating x-ray anode has an annular focal track. The surface of the focal track has a directed ground structure. Over the circumference of the annular focal track and over the radial extent of the focal track, the alignment of the ground structure is inclined relative to a tangential reference direction in the respective surface portion in each case by an angle that lies in the range from 15, including, up to and including 90. A corresponding method for producing a rotating x-ray anode is described.

The present disclosure relates to a high voltage vacuum tube including: a vacuum tube envelope including an interior; an anode assembly disposed within the interior of the vacuum tube envelope; and a cathode assembly disposed within interior of the vacuum tube envelope that emits an electron beam to strike a target surface of the anode assembly and form electromagnetic radiation.
The high voltage vacuum tube includes a braze assembly, the braze assembly including a first component and a second component joined together by a first braze joint, the first braze joint including a composition configured to include a solidification temperature range of no more than 90 C. and a liquidus temperature in the range of 950 C. to 1060 C.; the braze joint including no more than 30.0 wt % in total of one of more precious metals selected from Au, Pd and Pt, relative to the total weight of the first braze joint.

The present disclosure relates to a brazing structure. The brazing structure may comprise a first portion and a second portion. At least one of the first portion or the second portion may include a connection-reinforcing surface. The connection-reinforcing surface may include a groove region and a filler placement region. The filler placement region may be configured to hold a filler material in solid state before brazing. The groove region may include a plurality of grooves where the filler material flows into after being melted. The first portion and the second portion may be connected by a braze joint formed by the filler material.

A system for generating X-rays includes an electron source that generates an electron beam, a support layer with multiple holes and a target layer on the support layer and having target regions respectively over the holes. The electron source can direct the electron beam at the target regions one at a time to generate X-rays from the target regions, while the electron beam goes through the support layer via the holes without hitting any portion of the support layer. Another system for generating X-rays includes an electron source that generates an electron beam; a support layer with multiple support regions; a target layer on the support layer and having target regions respectively over the support regions; and an X-ray detector. The X-ray detector can capture an image of an object using the target X-rays but not using the support X-rays.

In an embodiment an X-ray source includes an electron source configured to emit electrons, an acceleration set-up configured to accelerate the emitted electrons and a transmission window downwards of the acceleration set-up, wherein the transmission window is configured to let through X-rays generated by the accelerated electrons, wherein the transmission window is located either in a straight extension of a line-of-flight of the accelerated electrons or off the line-of-flight and past the acceleration set-up, wherein the transmission window comprises a carbon carrier, and wherein the carbon carrier comprises sp2-hybridized carbon.

The present disclosure relates to a high voltage vacuum tube including: a vacuum tube envelope including an interior; an anode assembly disposed within the interior of the vacuum tube envelope; and a cathode assembly disposed within interior of the vacuum tube envelope that emits an electron beam to strike a target surface of the anode assembly and form electromagnetic radiation.
The high voltage vacuum tube includes a braze assembly, the braze assembly including a first component and a second component joined together by a first braze joint, the first braze joint including a composition configured to include a solidification temperature range of no more than 90 C. and a liquidus temperature in the range of 950 C. to 1060 C.; the braze joint including no more than 30.0 wt % in total of one of more precious metals selected from Au, Pd and Pt, relative to the total weight of the first braze joint.

An example anode target assembly for a radiation delivery system is provided. The anode target assembly includes a body with a first end and a second end. A source cap arranged at the first end of the body, the source cap defined by two or more target surfaces. The target may have multiple facets and may include one or more target areas, which may receive a different amount or type of durable coatings.