A converter for generating photons from an electron beam is provided. The converter may include a plurality of converter plates (i) positioned perpendicular to an axis and (ii) arranged sequentially in a direction along the axis from a first converter plate of the plurality of converter plates to a last converter plate of the plurality of converter plates. The first converter plate may be configured to receive an electron beam traveling in the direction along the axis. Further, the first converter plate may have a thickness smaller than a thickness of the last converter plate, wherein a thickness of a particular converter plate is measured along the axis.

A cooling system used in an X-ray generator having a cathode and anode that includes a target having a focal spot, wherein heat is generated in the anode and focal spot during operation of the X-ray generator. The system includes a heat transfer element attached to the anode wherein the heat transfer element includes a plurality of fin elements that transfer heat from the anode to surrounding air to cool the anode. The system also includes a liquid channel formed in the anode, wherein the liquid channel includes a cooling liquid. The liquid channel is located adjacent the target wherein heat from the focal spot is transferred to the cooling liquid to cool the focal spot wherein the heat transfer element, liquid channel and anode are unistructurally formed. Further, the cooling system includes a circulation pump that moves the cooling liquid in the liquid channel.

Embodiments provide a stationary X-ray source for a multisource X-ray imaging system for tomographic imaging. The stationary X-ray source includes an array of thermionic cathodes and, in most embodiments a rotating anode. The anode rotates about a rotation axis, however the anode is stationary in the horizontal or vertical dimensions (e.g. about axes perpendicular to the rotation axis). The elimination of mechanical motion improves the image quality by elimination of mechanical vibration and source motion; simplifies system design that reduces system size and cost; increases angular coverage with no increase in scan time; and results in short scan times to, in medical some medical imaging applications, reduce patient-motion-induced blurring.

An x-ray source has a target assembly including a target, an electron source for generating electrons to impact the target, and a flight tube assembly separating the target assembly from the electron source and transporting a coolant to the target assembly. The flight tube assembly includes a flight tube interface ring, a target cartridge tube, and an electrical isolation ring between the flight tube interface ring and the target cartridge tube.

Embodiments of the present disclosure disclose a combined scanning X-ray generator, a composite inspection apparatus and an inspection method. The combined scanning X-ray generator includes: a housing; an anode arranged in the housing, the anode including a first end of the anode and a second end of the anode opposite the first end of the anode; a pencil beam radiation source arranged at the first end of the anode and configured to emit a pencil X-ray beam; and a fan beam radiation source arranged at the second end of the anode and configured to emit a fan X-ray beam; wherein the pencil beam radiation source and the fan beam radiation source are operated independently.

The present disclosure provides an X-ray tube device and a spring pin for an X-ray tube device. In an embodiment, the X-ray tube device includes: an outer cylinder assembly having an anode end and a cathode end, an anode end cap assembly provided at the anode end of the outer cylinder assembly and including an X-ray tube, a cathode end cap assembly provided at the cathode end of the outer cylinder assembly and including a high voltage receptacle for an external power supply, and a spring pin connection assembly provided in the outer cylinder assembly and connecting a filament lead of the X-ray tube to the high voltage receptacle.

According to one embodiment, an X-ray tube assembly includes a cathode, an anode target, a joint including an inflow part into which a coolant flows, a first cylindrical pipe to which the joint is connected at one end, and the anode target is joined at an outer bottom part of the other end, a second cylindrical pipe whose first end part is fitted into the inflow part, and whose second end part is arranged to eject the coolant toward the bottom part of the first cylindrical pipe, the second cylindrical pipe being placed inside the first cylindrical pipe and an elastic member provided between the first end part and the first cylindrical pipe.

An X-ray tube includes a cathode and an anode. The cathode is configured to generate an electron beam. The anode has at least one hole that faces the electron beam, the hole having sidewalls and a floor. The electron beam impinges on one or more of the sidewalls of the at least one hole so as to emit a first X-ray beam at angles that are not orthogonal to a surface of the anode. The electron beam also impinges on the floor of the at least one hole so as to emit a second X-ray beam, at least some of which is emitted at an angle that is orthogonal to the surface of the anode.

A radiation emission device is provided. The radiation emission device may include a cathode configured to emit an electron beam and an anode configured to rotate on a shaft. The anode may be situated to receive the electron beam from the cathode. The radiation emission device may further include a rotor configured to drive the anode to rotate. The rotor may be mechanically connected to the shaft. The radiation emission device may further include a sleeve configured to support the shaft via at least one bearing. The cathode, the anode, and the rotor may be enclosed in an enclosure that is connected to the sleeve. At least a portion of the sleeve may reside outside the enclosure.

According to one embodiment, an X-ray tube device includes a cathode which emits electrons, an anode target which generates X-rays when the electrons emitted from the cathode collide therewith, a first tube portion, a second tube portion which forms a flow path of a coolant together with the first tube portion, and a protective film. The protective film covers an inner surface of the first tube portion, and is formed of hard gold.