Systems and methods for determining an offset of a position of a focal point of an X-ray tube is provided. The methods may include obtaining at least one parameter associated with an X-ray tube during a scan of a subject. The methods may further include determining a target offset of a position of a focal point based on the at least one parameter and a target relationship between a plurality of reference parameters associated with the X-ray tube and a plurality of reference offsets of reference positions of the focal point. The methods may further include causing, based on the target offset, a correction on the position of the focal point of the X-ray tube.

Systems and methods for determining an offset of a position of a focal point of an X-ray tube is provided. The methods may include obtaining at least one parameter associated with an X-ray tube during a scan of a subject. The methods may further include determining a target offset of a position of a focal point based on the at least one parameter and a target relationship between a plurality of reference parameters associated with the X-ray tube and a plurality of reference offsets of reference positions of the focal point. The methods may further include causing, based on the target offset, a correction on the position of the focal point of the X-ray tube.

Presented systems and methods facilitate efficient and effective monitoring of particle beams. In some embodiments, a radiation gun system comprises: a particle beam gun that generates a particle beam, and a gun control component that controls the gun particle beam generation characteristics, including particle beam fidelity characteristics. The particle beam characteristics can be compatible with FLASH radiation therapy. Resolution control of the particle beam generation can enable dose delivery at an intra-pulse level and micro-bunch level. The micro-bunch can include individual bunches per each 3 GHz RF cycle within the 5 to 15 μsec pulse-width. The FLASH radiation therapy dose delivery can have a bunch level resolution of approximately 4.4×10{circumflex over ( )}−6cGy/bunch.

Embodiments of the present disclosure provides methods and systems for preparing a cathode component. The method may include obtaining a three-dimensional (3D) model of the cathode component; obtaining a predetermined parameter, wherein the predetermined parameter includes at least one of a scanning direction of laser, an energy distribution of laser, an output power of laser, or a scanning speed of laser; and controlling a 3D printer to perform, based on the 3D model and the predetermined parameter, a laser scanning on a raw material to obtain the cathode component.

The present invention provides an emitter, which comprises carbon nanotubes and is excellent in the efficiency of electron emission, and an X-ray tube comprising the same.

An open microfocus X-ray source and a control method thereof are provided. The open microfocus X-ray source includes: an open X-ray tube, a high voltage power supply (HVPS) system, a vacuum system and a control system. The open X-ray tube includes a cathode system, a deflection system and a focusing system. The HVPS system is configured to provide an emission current I.sub.0, an accelerating high voltage U.sub.0 and a grid voltage U.sub.G for an electron beam. The vacuum system is configured to perform vacuumization. The control system is configured to control, according to a spot size of an electron beam for bombarding an anode target, the HVPS system to adjust the emission current I.sub.0, the accelerating high voltage U.sub.0, a deflection coil current I.sub.XY of the deflection system, and a focusing coil current I.sub.F of the focusing system, such that the spot size meets a preset requirement.

An x-ray tube source is disclosed that allows differential phase shift, attenuation, and x-ray scattering features of an object to be acquired in a single exposure. Such multiplexed x-ray tube source includes multiple x-ray spot origins controlled in such a way that each slightly separated spot is temporally modulated “ON and OFF” at differing frequencies. In an x-ray interferometer system, such x-ray tube source forms multiple illumination beams of a single angular view of an object's feature but each with different interference fringe locations. A composite image can be acquired with a high frame-rate digital detector as a component element in such x-ray interferometer system. Such composite image can be subsequently de-multipexed and separately presented according to each spot-source illumination beam. Such isolated images of an object's feature, each having different fringe locations, allows for post-acquisition “fringe-mapping” analysis of the feature's full interaction with x-rays, including refraction, scattering, and absorption.

A cathode assembly component (CC) for X-ray imaging, comprising a monolithic outer shell (OS) with electron optical functionality and, insertable in said shell, an insulator structure (INS) for two or more electrodes.

The present disclosure is related to a microwave source. The microwave source may include a cathode heater and a thermionic emitter. The cathode heater may include a first component, and a second component enclosing at least a portion of the first component. The thermionic emitter may be configured to release electrons when the thermionic emitter is heated by the cathode heater. At least a portion of the second component of the cathode heater may be in contact with the thermionic emitter.

The invention relates to an X-ray source (10) comprising at least one waveguide (30) for X-ray radiation, wherein the at least one waveguide (30) has a core (32) and a casing (40) surrounding the core (32), and wherein at least one part of the waveguide (30) is designed to emit X-ray radiation (50), if the part of the waveguide (30) is bombarded with electrons (52). The invention also relates to a system for generating X-ray radiation comprising an X-ray source of this type, and a method for generating X-ray radiation by means of an X-ray source of this type or a system of this type.