1016results about "X-ray apparatus" patented technology

A ray generating device and a control method thereof are provided. The ray generating device includes: an electronic beam generating device; a microwave generating device; a microwave circulator, having a power input port and at least two power output ports, the power input port being connected to the microwave generating device; a plurality of accelerating tubes respectively connected to at least two power output ports, configured to respectively receive a plurality of electronic beams, and accelerate electronic beams respectively through microwaves received from the at least two power output ports, and to respectively generate a plurality of rays having at least two different energies; and a controller, configured to perform chronological control on microwave power of the microwave generating device, and chronological control on beam loadings of the electronic beams generated by the electronic beam generating device and respectively corresponding to accelerating tubes.

X-ray generation apparatus includes X-ray generation tube, driving circuit, and accommodating container. The X-ray generation tube includes insulating tube with first and second opening ends, cathode closing the first opening end and having electron emitting portion, and anode closing the second opening end and having target. The accommodating container has third opening end, and the X-ray generation tube closes the third opening end. The accommodating container defines first space storing the driving circuit, and second space protruding from the first space and storing at least part of the X-ray generation tube. The accommodating container includes protrusion portion surrounding the second space, and one end of the second space forms the third opening end.

An EUV collector mirror (22) for a light source module has a collector surface with a reflection surface (23) for reflecting usable EUV light, which impinges on the reflection surface (23) from a source region to a subsequent EUV optics and an in an aperture (29) for pump light. The inner aperture (29) has an aperture surface area, which is smaller than 1.4 % of a surface area of the collector surface. Described is also an aperture insert (37) for insertion into a main aperture (36) of the EUV collector mirror (22), to reduce a size of an effective aperture for the pump light.

X-ray generation apparatus includes: X-ray generation tube, cathode having electron emitting portion, and anode having target; driving circuit for driving the X-ray generation tube, and accommodating container accommodating the X-ray generation tube and the driving circuit. The accommodating container defines first space storing the driving circuit, and second space protruding from the first space and storing at least part of the X-ray generation tube, the accommodating container includes protrusion portion surrounding the second space. The second space includes third space where X-rays from the target enter without being blocked by either the cathode or the anode, and fourth space where X-rays from the target are blocked by the cathode or the anode.

A connector retention cap assembly includes an outer plate, an inner plate, at least one biasing mechanism, and a retention member. At least one biasing mechanism is disposed between the outer plate and the inner plate and biases the outer plate from the inner plate. A retainer connects the inner panel to the outer panel and limits displacement of the inner panel away from the outer panel within a maximum distance.

A cooling apparatus and a radiation apparatus using same. The cooling apparatus (100) can be used for cooling an X-ray source (200) in the radiation apparatus. The cooling apparatus (100) comprises: a structural frame (110); a heat dissipation device (120), installed inside the structural frame (110), the heat dissipation device (120) being configured to form a heat dissipation airflow passing therethrough; and a cooling unit (130), installed inside the structural frame (110) independently of the heat dissipation device (120), and located in a region through which the heat dissipation airflow flows; wherein the cooling unit (130) is configured to provide a cooling medium to flow through the X-ray source (200) for heat exchange, and the heat dissipation device (120) is further configured to communicate with the cooling unit (130) to dissipate heat from the cooling medium entering the interior of the heat dissipation device (120).

A compact LSP broadband light includes a gas containment structure containing a mixture of a first noble gas and a second noble gas, a filter tube positioned within the gas containment structure, an input window, and a pump source. The laser pump source directs an optical pump through the input window to sustain a plasma within the filter tube. The first noble gas absorbs broadband light within a first and a second wavelength band. The filter tube absorbs broadband light having a wavelength below a selected threshold. The absorption of broadband light by the first noble gas and the filter tube provide long-pass filtering to protect one or more downstream optical elements. The gas containment structure includes an output optical window for transmission of filtered broadband light. The gas containment structure includes a gas inlet and outlet for generating a reverse vortex flow pattern within the filter tube.

An extreme ultraviolet light generation apparatus includes a target supply unit, a target passage detection device, a delay circuit, a laser device, a target image capturing device, and a processor. Here, the processor controls the vibrating element to provide irregular intervals between droplet targets adjacent to each other; generates integrated image data by integrating plural pieces of image data imaged at different times; specifies a position, in the integrated image data, of the droplet target most emphasized in the integrated image data; and sets a delay time based on a distance from a position of the most emphasized droplet target to a second detection position.

The invention discloses a method for efficiently generating high-brightness gamma radiation, and belongs to the technical field of radiation. A relativistic electron beam is injected into the porous microstructure foam target material, and high-brightness gamma ray radiation is generated. According to the method, the used device is simple, only the single relativistic electron beam and the porous microstructure foam target material are needed to interact, compared with a traditional uniform-density solid material, the energy conversion efficiency in the interaction process of the electron beam and a substance can be remarkably improved, and the energy conversion efficiency can be remarkably improved through the effective constraint effect of a high-intensity magnetic field. And the problems of low energy conversion rate, low light source brightness, poor radiation directivity, complex device or difficulty in experiment implementation and the like of the existing high-energy gamma ray radiation source are solved.

Arrangement (26) for generating EUV radiation or for operating nuclear fusion by irradiating a target material (28) with a plurality of laser beams (20, 22, 24). The arrangement (26) comprises a target chamber (32) having an interior (34) with a target area (36) for irradiating the target material (28) with the plurality of laser beams (20, 22, 24), an insertion device (38) for introducing the target material (28) into the target area (36), and a manipulation device (46) for shaping and / or positioning the target material (28) in the target area (36).

An X-ray generation apparatus includes: an X-ray generation tube including an insulating tube with a first opening end and a second opening end, a cathode arranged to close the first opening end of the insulating tube and including an electron emitting portion, and an anode arranged to close the second opening end and including a target that generates X-rays when electrons from the electron emitting portion collide; and an accommodating container configured to accommodate the X-ray generation tube, wherein the accommodating container has a third opening end, and the X-ray generation tube is arranged to close the third opening end, the accommodating container is filled with an insulating liquid, an outer surface of the cathode includes a cylindrical side surface and a circular bottom surface, and at least the entire side surface of the outer surface is surrounded by a member.

To improve accuracy of tube current modulation, responsiveness, and an accepted modulation width and the like at the time of kV switching.SOLUTION: A storage unit stores characteristics data showing a relation between a filament current value and a tube current output value upon switching between a first tube voltage and a second tube voltage lower than the first tube voltage. A setting unit is a unit that sets a tube current setting value for performing tube current modulation in parallel with switching between the first tube voltage and the second tube voltage. The setting unit sets the first tube current setting value at the time of application of either the first tube voltage or the second tube voltage as the reference tube voltage, and sets a second tube current setting value based on the characteristics data and the first tube current setting value at the time of application of the other tube voltage. In synchronization with the switching between the first tube voltage and the second tube voltage, a tube current control circuit switches between tube current feedback control based on the first tube current setting value at the time of application of the reference tube voltage, and tube current feedback control based on the second tube voltage setting value at the time of application of the other tune voltage.SELECTED DRAWING: Figure 6

A power supply circuit for an x-ray production system, which has an inverter circuit with an output for connecting the inverter circuit with an x-ray source of the x-ray production system, includes a rectifier circuit including an input to connect the rectifier circuit with a power supply network, the rectifier circuit further including an output to connect to an input of the inverter circuit; and a backup circuit including a plurality of electrical energy storage cells, the plurality of electrical energy storage cells being connectable in series between the input of the inverter circuit and the output of the rectifier circuit.

X-ray generation apparatus includes X-ray generation tube having insulating tube with first and second opening ends, cathode closing the first opening end and having electron emitting portion, and anode closing the second opening end; electronic component arranged in proximity to the cathode; driving circuit for driving the X-ray generation tube via the electronic component; and accommodating container accommodating the X-ray generation tube, the electronic component, and the driving circuit. The accommodating container has third opening end, and the X-ray generation tube closes the third opening end. The accommodating container defines first space storing at least part of the driving circuit, and second space protruding from the first space and storing the X-ray generation tube and the electronic component.

A medical imaging system includes an X-ray source configured to emit X-rays. The medical imaging system also includes a high voltage generator configured to provide power to the X-ray source. The medical imaging system further includes a high efficiency power distribution unit configured to receive electrical power from an electrical grid and to store the electrical power, wherein the high efficiency power distribution unit includes an active rectifier configured to regulate a high voltage direct current outputted to components of the medical imaging system including the high voltage generator.

X-ray generation apparatus includes X-ray generation tube having insulating tube, cathode, and anode having target for generating X-rays; driving circuit for driving the X-ray generation tube; and accommodating container accommodating the X-ray generation tube and the driving circuit. The accommodating container has opening end and the X-ray generation tube closes the opening end. The accommodating container is filled with insulating liquid. The accommodating container has first space storing the driving circuit, and second space protruding from the first space and storing the X-ray generation tube. The accommodating container includes protrusion portion surrounding the second space, and one end of the second space forms the opening end, the entire insulating tube is stored in the second space, and the protrusion portion is made of insulating material.

X-ray generation apparatus includes: X-ray generation tube having insulating tube with first and second opening ends, cathode closing the first opening end of the insulating tube and having electron emitting portion, and anode closing the second opening end and having target; and accommodating container accommodating the X-ray generation tube. The accommodating container has third opening end, and the X-ray generation tube closes the third opening end. The accommodating container is filled with insulating liquid, first member arranged spaced apart from the second opening end contacts at least part of outer surface of the insulating tube, and the first member is sandwiched between the insulating tube and second member arranged spaced apart from the accommodating container.

Disclosed herein are a method of controlling a bipolar high-voltage generator and an X-ray system. The bipolar high-voltage generator is connected to a load for supplying a cathode voltage and an anode voltage to the load. The bipolar high-voltage generator includes a first transformer and a second transformer. The first transformer is provided in an output circuit of the anode voltage, and the second transformer is provided in an output circuit of the cathode voltage. The method of controlling includes: obtaining a target voltage difference of the bipolar high-voltage generator, wherein the target voltage difference is within a preset range; and adjusting a working state of at least one of the first transformer and the second transformer based on the target voltage difference. The target voltage difference is defined as a difference between an absolute value of a target anode voltage and an absolute value of a target cathode voltage output from the bipolar high-voltage generator.

Arrangement (16) for generating EUV radiation or for operating nuclear fusion by irradiating a target material (18) with a laser beam (14). The arrangement comprises a target chamber (20) which has an interior (22) with a target area (24) for irradiating the target material (18) with the laser beam (14), an insertion device (26) for introducing the target material (18) into the target area (24), and a manipulation device (34) for shaping and / or positioning the target material (18) in the target area (24).

The utility model discloses a high-voltage power supply and a high-voltage power supply circuit for an X-ray tube. The high-voltage power supply circuit comprises a high-voltage circuit, a filament circuit, a control circuit, an over-temperature protection circuit and a global protection circuit. The high-voltage circuit is connected with the anode of the X-ray tube and is used for generating a target voltage signal; the filament circuit is connected with a filament of the X-ray tube and is used for generating filament working voltage; the over-temperature protection circuit is connected with the control circuit and is used for generating an over-temperature protection signal based on the filament temperature; the control circuit is connected with the high-voltage circuit and the filament circuit and is used for generating an enable signal based on the over-temperature protection signal or an external control signal; and the global protection circuit is connected with the control circuit, the high-voltage circuit and the filament circuit and is used for turning off the high-voltage circuit and the filament circuit based on the enable signal. By arranging the global protection circuit, the high-voltage circuit and the filament circuit can be started only after active enabling of a user, accidental starting or wrong operation is avoided, and the accident risk is reduced.

A method for detecting perturbations in electron impinging on an X-ray source is disclosed. The method comprises: controlling an electron beam to point to an expected target location on a stationary target and form a spot at the expected target location such that the electron beam forms a spot at an actual target location on the target, the target comprising a first edge between regions having different electron back scattering probabilities; measuring a first series of values indicative of a change in current absorbed in the target over time with the electron beam spot directed at the expected target location and overlapping the first edge, where the expected target location remains stationary while measuring the first series of values; and calculating a first quality metric indicative of perturbations in a relative position between the expected target position and the actual target position based on the first series of values. An alternative method of scanning an electron beam across the edge, and an X-ray source configured to perform these methods, are also disclosed.

The drive control method for the X-ray tube anode rotating motor includes: S10: After the drive circuit is powered on, the control circuit outputs a test signal to the anode rotating motor. The test signal has the same phase as the working signal, and then proceeds to S20; S20: Phase detection is performed on the test signal, and the phase difference is calculated based on the phase detection result, and then proceeds to S30; S30: Based on the calculated phase difference, it is determined whether the phase of the test signal meets the operating phase requirements of the anode rotating motor. If the determination result is yes, then proceeds to S40; S40: It is determined whether the user has issued an exposure request. If the determination result is yes, then proceeds to S50; and S50: The drive circuit is controlled to output a working signal to the anode rotating motor to drive the anode target disk to rotate. This method ensures that the power supply phase connected to the anode rotating motor meets the operating phase requirements of the anode rotating motor during operation. An X-ray generating device is also provided.

The invention discloses a cooling system applied to an X-ray tube core, and relates to the technical field of X-ray tube cores. Comprising an X-ray tube core main body, an oil storage tank, an oil well pump and a filtering device, a heat conduction block is arranged on the X-ray tube core main body, a heat conduction inner cylinder is arranged in the X-ray tube core main body, a heat dissipation tube is arranged in the X-ray tube core main body, and the oil inlet end of the left side of the oil storage tank is fixedly connected with a first connecting tube; the oil inlet end of the oil well pump is fixedly connected with an oil inlet pipe, the oil outlet end of the oil well pump is fixedly connected with an oil outlet pipe, and the oil outlet end of the left side of the filtering device is fixedly connected with a second connecting pipe.

The invention provides an X-ray machine power supply output current adjusting method and device, and relates to the field of medical power supplies. The method comprises the following steps of: controlling a switching tube to complete inversion by using symmetrical PWM (Pulse Width Modulation), and obtaining stable DC (Direct Current) output by completing DC / DC (Direct Current / Direct Current) conversion; compared with a traditional half-bridge circuit, a symmetrical PWM control mode is adopted; a branch composed of a diode and an auxiliary switch tube is added to the circuit. The main switch not only can well realize soft switching, but also works in a symmetrical state; the auxiliary switch tube realizes ZVS and ZCS conduction; according to the invention, soft switching of the power device is realized, and the device is small in stress and high in reliability.

A system and method of reducing byproduct accumulating on a surface in a scrubber of a radiation source are provided. The system and method provide for cycling a temperature of the surface above and below a melting temperature of a target material or for controlling a temperature profile of the surface so that only part of the surface is heated above the melting temperature of the target material at one time.

The light source includes a linear accelerator for accelerating electron bunches to relativistic energies. The light source further includes a first grating downstream of the linear accelerator, which is positioned so that electron bunches pass through it to produce a diffraction pattern. The light source further includes an emittance exchange device downstream of the first grating, which rotates the diffraction pattern in a direction substantially parallel to the propagation direction of the electron bunches. The light source further includes a laser that generates light pulses. The light source is configured such that the light pulses from the laser interact with the electron bunches in an overtaking geometry at an interaction point downstream of the emittance exchange device, while the diffraction pattern is substantially parallel to the propagation direction of the electron bunches to produce light via inverse Compton scattering.

To remove all unwanted heat from a source coil.SOLUTION: An electron beam B is typically dynamically steered on its path to a target 500 after generation. The steering is performed by one or more source coils 132N and 132S. These coils create a magnetic field outside a vacuum vessel 112 and allow air / water / oil cooling to remove unwanted heat. The magnetic field is then picked up within the vacuum vessel with a pole piece and directed toward a region where the magnetic field is needed to steer the electron beam.SELECTED DRAWING: Figure 1

The invention relates to the technical field of defect detection, and discloses an automatic exposure method and system for an X-ray flaw detector, and the method comprises the steps: firstly obtaining a three-dimensional model of a workpiece, and calculating the equivalent thickness of the workpiece, the source image distance, the normal included angle of the inner wall, the directional attenuation of an X-ray source and other characteristic functions along with the change of a circumferential angle in combination with preset X-ray projection geometry; then obtaining a linear attenuation coefficient of the material under effective energy through energy calibration, and setting a target comparison noise ratio and a defect equivalent thickness at a reference angle to obtain a reference exposure; generating full circumferential target exposure distribution according to the physical function and the material parameters; finally, dispersing exposure distribution into a sector sequence, carrying out exposure measurement under the constraint of equipment and total exposure, calculating an actual contrast noise ratio of each sector, and comparing the actual contrast noise ratio with a threshold value, thereby quantitatively judging whether the workpiece has defects or not, and realizing high-precision and uniform-sensitivity X-ray defect detection on the circumferential weld.

A system (100) for determining a temperature of an anode (110) of an X-ray tube (120), is provided. The system includes an X-ray tube (120), and an electrical circuit (130). The X-ray tube (120) includes an anode (110) configured to generate X-ray radiation (140) in response to impinging electrons (150), and a cathode (160) for generating the electrons (150) and / or a grid (170) for deflecting the electrons (150) prior to the electrons (150) impinging on the anode (110). The cathode (160) and / or the grid (170) comprises at least one resistive element (180', 180'') configured to receive thermal radiation emitted by the anode (110). An electrical resistance of the at least one resistive element (180', 180'') is dependent on a temperature change induced in the resistive element due to the received thermal radiation. The electrical circuit (130) is configured to determine a temperature of the anode (110) based on a measurement of a value of the at least one electrical resistance during the generation of X-ray radiation (140) by the anode.

The invention relates to a cable guidance system (10) for a computed tomography system, wherein a gantry (2) of the computed tomography system is adjustable in a horizontal plane, the cable guidance system (10) comprising: - a guide connection (17) arranged on the gantry (2), - a gantry articulated arm (12) and a center articulated arm (11), wherein the gantry articulated arm (12) is pivotably connected to the guide connection (17) by means of a first joint (14) and to the center articulated arm (11) by means of a second joint (14), - a ceiling column (13) with a column head (13a) that can be attached to a ceiling and a column body (13b) arranged on the column head (13a), wherein the central articulated arm (11) is rotatably attached about the longitudinal axis (L) of the column at a coupling point (13c) of the column body (13b) that is opposite the column head (13a), wherein the ceiling column (13), the gantry articulated arm (12) and the central articulated arm (11) are designed to guide at least one supply line (19) along their longitudinal axes to the guide connection (17).