87results about "X-ray tube details" patented technology

Disclosed is a device and method for generating X-rays having different energy levels as well as a material discrimination system thereof. The method comprises the steps of: generating a first pulse voltage, a second pulse voltage, a third pulse voltage and a fourth pulse voltage, generating a first electron beam having a first beam load and a second electron beam having a second beam load, respectively, based on the first pulse voltage and second pulse voltage, generating a first microwave having a first power and a second microwave having a second power, respectively, based on the third pulse voltage and the fourth pulse voltage, accelerating the first and second electron beams respectively using the first and second microwave to obtain the accelerated first electron beam and the second electron beam, hitting a target with the accelerated first electron beam and the second electron beam to generate a first X-ray and a second X-ray having different energy levels. The X-rays having different energy levels generated by the present invention can be used in the non-destructive inspection for large-sized container cargo at places such as Customs, ports and airports, and in realizing the material discrimination for the inspected object.

At least one exemplary embodiment is directed to a light source which includes a plasma generator configured to generate plasma, a mirror configured to reflect light that is produced by the plasma, a plurality of plates provided between the plasma and the mirror and arranged radially around an axis passing through a light emission center, and a magnetic-field generator for generating a magnetic line of force between the plasma and the mirror so that trajectories of charged particles scattering from the plasma are curved toward the plates.

The invention discloses a double cooling system of an X-ray machine. The double cooling system comprises a shell, an annular shell, a support, a liquid cooling system of an X-ray tube, a pre-cooling system, a first air door, second air doors, air supply motors and exhaust motors. The air supply motors, the first air door, the pre-cooling system, the liquid cooling system of the X-ray tube and the exhaust motors form a first cooling system. The air supply motors, the second air doors and the exhaust motors form a second cooling system. On the basis that cost and system complexity are not increased obviously, the advantages of an air cooling system and the liquid cooling system are integrated. When the quantity demanded for cooling loads is large, the liquid cooling system is preferentially used, or the two systems are used at the same time. When the quantity demanded for the cooling loads is small, the air cooling system is preferentially used. When one cooling system fails, the other system can be standby, so that normal and continuous operation of the X-ray machine is guaranteed, and the machine halt time is significantly reduced.

A multi-focus x-ray source (MFXS) for a multiple inverse fan beam x-ray diffraction imaging (MIFB XDI) system. The MFXS includes a plurality of focus points (N) defined along a length of the MFXS collinear with the y-axis. The MFXS is configured to generate the plurality of primary beams, and at least M coherent x-ray scatter detectors are configured to detect coherent scatter rays from the primary beams as the primary beams propagate through a section of the object positioned within the examination area when a spacing P between adjacent coherent x-ray scatter detectors satisfies the equation:

where W_s is a lateral extent of the plurality of focus points, U is a distance from the y-axis to a top surface of the examination area, and V is a distance from the top surface to the line at the coordinate X=L.

The present disclosure is directed towards the prevention of high voltage instabilities within X-ray tubes. For example, in one embodiment, an X-ray tube is provided. The X-ray tube generally includes a stationary member, and a rotary member configured to rotate with respect to the stationary member during operation of the X-ray tube. The X-ray tube also includes a liquid metal bearing material disposed in a space between the shaft and the sleeve, a seal disposed adjacent to the space to seal the liquid metal bearing material in the space, and an enhanced surface area material disposed on a side of the seal axially opposite the space and configured to trap within the enhanced surface area material liquid metal bearing material that escapes the seal.

To provide an electron beam irradiation device capable of reducing quantity of inert gas consumed while maintaining oxygen concentration in an irradiation chamber in appropriate level. An electron beam irradiation device to irradiate an electron beam to an irradiated object passing through an irradiation chamber while introducing inert gas into the irradiation chamber comprising an oxygen concentration detection device to detect oxygen concentration in the irradiation chamber; a main controlling valve to regulate flow rate of inert gas introduced in the irradiation chamber; a control unit to control valve travel of the main controlling valve so that the flow rate of the inert gas decreases when the oxygen concentration becomes low on the basis of the oxygen concentration detected by the oxygen concentration detection device.

An apparatus for generating x-rays includes an electron beam generator and a first device arranged to apply an RF electric field to accelerate the electron beam from the generator. A photon source is arranged to provide photons to a zone to interact with the electron beam from the first device so as to generate x-rays via inverse-Compton scattering. A second device is arranged to apply an RF electric field to decelerate the electron beam after it has interacted. The first and second devices are connected by RF energy transmission means arranged to recover RF energy from the decelerated electron beam as it passes through the second device and transfer the recovered RF energy into the first device.

An X-ray tube anode assembly, an X-ray tube assembly and a method for heat management to an X-ray assembly having a movable X-ray target having a target surface. The anode assembly includes a drive member arranged and disposed to provide oscillatory motion to the target assembly and a target surface that is configured to remain at a substantially fixed distance from a cathode assembly during oscillatory motion.

An x-ray source can include an x-ray tube and a power supply. The x-ray tube can be removably affixed to the power supply in a rigid manner with the x-ray tube movable and holdable along with the power supply when affixed thereto. A releasable coupling between the x-ray tube and the power supply can create an interface defining a potential arc path. A means, such as a non-linear plug and socket junction, a gasket, or an electrically conductive sleeve, can be used for resisting arcing along the potential arc path.

The invention relates to a particle accelerator. The accelerator comprises a chamber (h) made of conducting material having a central axis; an anode (a) connected electrically to the chamber along the central axis; a cathode (b) housed in the chamber along the central axis; an insulating element (c) connecting the cathode to the chamber, the insulating element comprising several sections separated by electrodes (k1 to k6). The insulator lies inside the chamber (h) along the central axis in the extension of the region formed by the anode (a) and the cathode (b).

A miniature X-ray tube for intravascular or intracorporeal radiation treatment in living beings is proposed. The X-ray tube comprises a cylindrical housing section with a longitudinal axis. The miniature X-ray tube also comprises a cylindrical or cylindrical-tube-shaped first field emission cathode arranged concentrically about the longitudinal axis in the housing with a plurality of carbon nanotubes which emit electrons radially outward. The miniature X-ray tube also comprises a second field emission cathode in the housing with a plurality of carbon nanotubes which emit electrons in the direction of longitudinal axis. The miniature X-ray tube only emits little heat and is robust against mechanical stresses.

The invention relates to an array target of an X-ray source for electron beam scanning CT. The array target includes a linear array target, an embedding layer, and a target base; the linear array target comprises at least one individual target site; the individual target sites is in the shape of a line and go deep into the embedding layer by 0.5 to 10 microns; two ends of each target site extend to the edges of the embedding layer; the width of the target sites is smaller than or equal to the diameter of an electron beam, preferably, is the half peak width of the beam current density of the electron beam, and can be approximated to 1/2 to 2/3 of the diameter of the electron beam; each gap between the target sites is equal to or greater than the diameter of the electron beam; the embeddinglayer is used for configuring the target sites; the target base is disposed at the bottoms of the embedding layer and the target sites; and the thickness of the target base ranges from 20 to 300 microns.

The present invention relates to an X-ray detector comprising a directly converting semiconductor layer (60) having a plurality of pixels for converting incident radiation into electrical measurement signals with a band gap energy characteristic of the semiconductor layer, wherein said incident radiation is x-ray radiation emitted by an x-ray source (2) or light emitted by at least one light source (30, 33). Further, an evaluation unit (67) is provided for calculating evaluation signals per pixel or group of pixels from first electrical measurement signals generated per pixel or group of pixels when light from said at least one light source at a first intensity is coupled into the semiconductor layer and second electrical measurement signals generated per pixel or group of pixels when light from said at least one light source at a second intensity is coupled into the semiconductor layer, wherein said evaluation unit is configured to detect per pixel or group of pixels a noise peak in said first and second electrical measurement signals and to determine offset and gain per pixel or group of pixels from the detected noise peaks. A detection unit (69) is provided for determining detection signals from electrical measurement signals generated when x-ray radiation is incident onto the semiconductor layer, and a calibration unit (68) is provided for calibrating the detection unit on the basis of the evaluation signals.

The present invention relate to an X-ray photographing apparatus, and more particularly, to a high voltage driving circuit for X-ray tube, in which a first voltage multiplying rectifier unit and a second voltage multiplying rectifier unit are in series connected to each other based on a high voltage generation unit to stably convert a high voltage power generated from the high voltage generation unit into a drive power for an X-ray tube with high energy efficiency, and in which a plurality of isolation transformers or high voltage transformers is in series connected to each other in the high voltage generation unit to divide a voltage of the second voltage multiplying rectifier unit into a withstanding voltage of the isolation transformers or the high voltage transformers, thereby ensuring excellent insulation properties.

An X-ray target assembly comprises target material and a heat conduction layer, wherein the target material has a first surface for receiving high-energy electron beam bombardment, and the first surface is provided with a bombardment-suffering part, and the heat conduction layer at least covers the bombardment-suffering part and is attached to the bombardment-suffering part. The heat conduction layer enables the bombardment-suffering part of the target material to be isolated from the air and enables heat energy of the bombardment-suffering part to be radiated quickly. Therefore, the incident power of a high-energy electron beam can be enhanced and the X-ray dose rate can be improved while the bombardment-suffering part of the target material can be prevented from oxidation and surface corrosion.

The invention relates to an X-ray system (2) comprising an X-ray source (4) which generates X-ray radiation (10) at multiple X-ray focal spots (8) during operation, wherein each X-ray focal spot (8) is assigned a respective collimator (12), which selects the X-ray radiation (10) generated in the respective X-ray focal spot (8) and directed onto a common detector (14), wherein the collimators (12)are arranged such that they are stationary relative to their respective assigned X-ray focal spot (8), wherein the X-ray source (4) is configured as an X-ray tube (6) with at least one anode (22) having the X-ray focal spots (8) and with a number of cathodes (24), or wherein the X-ray source (4) has multiple X-ray tubes (6), the anodes (22) of which have the X-ray focal spots (8), and wherein thecollimators (12) are arranged in the respective X-ray tubes (6). The invention also relates to a method for operating an X-ray system (2) of this type.