Abstract: Some embodiments include an x-ray system, comprising: a vacuum enclosure; a plurality of electron sources disposed within the vacuum enclosure; an anode including at least one target with a plurality of focal spots disposed in a planar array within the vacuum enclosure, each focal spot configured to generate an x-ray beam in response to an electron beam from a corresponding one of the electron sources; a plurality of first collimators disposed within the vacuum enclosure, each first collimator associated with a corresponding one of the focal spots and configured to collimate the x-ray beam of the corresponding focal spot; and a second collimator integrated with a housing of the vacuum enclosure or external to the vacuum enclosure, the second collimator configured to collimate each of the x-ray beams.

Abstract: Some embodiments include an x-ray device comprising: an access port configured to receive a cathode within an interior volume of an enclosure of the x-ray device; a first vacuum seal configured to seal a cover over the access port; and a second seal configured to seal the cover over the access port, the second seal maintained between the first vacuum seal and the interior volume of the enclosure during removal of the first vacuum seal.

Abstract: An x-ray tube, comprising: a field emitter including an emission surface; an anode; and a focus electrode disposed between the field emitter and the anode; wherein: the focus electrode includes: a first surface that is substantially perpendicular to the field emitter emission surface and nearest to the field emitter; a second surface that is axially nearest to the anode, wherein the field emitter and the anode form an axis; and a third surface that extends between the first surface and the second surface; and a first location on the focus electrode between the first surface and the third surface is further from the anode than a second location on the focus electrode between the third surface and the second surface.

Abstract: Embodiments include a system, comprising: a vacuum enclosure; an anode support structure penetrating the vacuum enclosure and including a plurality of first cooling passages; and an anode disposed within the vacuum enclosure, coupled to and supported by the anode support structure, and including: a target; and a plurality of second cooling passages; wherein: each of the second cooling passages is coupled to a corresponding first cooling passage; the anode is coupled to the anode support structure on a side of the anode different from a side of the anode including the target and different from axial ends of the anode on a major axis of the anode; and the anode is a linear anode.

Abstract: A system, comprising: a vacuum enclosure; an anode support structure penetrating the vacuum enclosure and including a plurality of first cooling passages; and an anode disposed within the vacuum enclosure, coupled to and supported by the anode support structure, and including: a target; and a plurality of second cooling passages; wherein: each of the second cooling passages is coupled to a corresponding first cooling passage; and the anode is coupled to the anode support structure on a side of the anode different from a side of the anode including the target and different from axial ends of the anode on a major axis of the anode.

Abstract: A system, comprising: a vacuum enclosure; an anode support structure penetrating the vacuum enclosure and including a plurality of first cooling passages; and an anode disposed within the vacuum enclosure, coupled to and supported by the anode support structure, and including: a target; and a plurality of second cooling passages; wherein: each of the second cooling passages is coupled to a corresponding first cooling passage; and the anode is coupled to the anode support structure on a side of the anode different from a side of the anode including the target and different from axial ends of the anode on a major axis of the anode