129results about "X-ray apparatus" patented technology

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 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).

The optical amplifier comprises an amplification chamber, a first pump, a first heat exchanger, a second pump, and a novel catalyst module. The amplification chamber is configured to receive a laser beam and output an amplified laser beam. The first pump is configured to pump a gain medium into the gain medium system. The second pump is configured to pump a cooling fluid into the first heat exchanger. The first heat exchanger is positioned to transfer heat from the gain medium to the cooling fluid after the gain medium has passed through the amplification chamber. The novel catalyst module comprises a body and a catalyst disposed within the body. The body constitutes part of the gain medium system and is located downstream of the amplification chamber and upstream of the first heat exchanger. During use, the gain medium is adjacent to or in contact with the catalyst.

A method of operating an extreme ultraviolet (EUV) radiation source includes generating a stream of droplets of target material. The method also includes illuminating a droplet of the stream using a first laser pulse to adjust a shape of the droplet into a target. The method also includes illuminating the target using a second laser pulse to transform the target into a rarefied target. A time between the first laser pulse and the second laser pulse is 0.5 to 2.5 μs. The method also includes illuminating the rarefied target using a third laser pulse to ionize the rarefied target to generate EUV radiation.

A new laser beam transport system comprises a structure and at least one detector. The structure comprises an inner tube, defining an input end and an output end, and an outer tube surrounding the inner tube so as to define a volume therebetween. The volume is closed such that ambient radiation cannot enter the volume. The at least one detector is configured to detect the presence of radiation in the volume and operable to generate a signal if an amount of radiation above a threshold level is detected. A new laser system comprises such a laser beam transport system and a radiation source operable to generate a radiation beam that propagates through an interior volume defined by the inner tube, from the input end to the output end. A new laser-produced plasma radiation source comprises such a laser system.

The invention relates to a device for performing an examination of an object by means of X-ray radiation, wherein the device has a functional element which is movably arranged in a radiation region in a movement direction and a position sensor, the functional element having an electrically and / or magnetically conductive region, wherein the position sensor is an electric coil assembly for detecting the conductive region and for providing an overall voltage depending on the detection of the conductive region, wherein the coil assembly has an excitation coil for providing an alternating magnetic field and two series-connected detection coils for detecting at least a portion of the alternating magnetic field, wherein the detection coils and the excitation coil are arranged such that the overall voltage over the two detection coils is dependent on the position of the functional element relative to the position sensor, wherein the device is configured to derive a position signal dependent on the position of the functional element relative to the position sensor from the overall voltage.

Described is a method of determining whether repair or replacement of an electron gun of a radiotherapy device should be scheduled. The radiotherapy device comprises a linear accelerator and is configured to provide therapeutic radiation to a patient. The radiotherapy device comprises a vacuum tube comprising the electron gun, a waveguide configured to accelerate electrons emitted by the electron gun toward a target to produce said radiation. The radiotherapy device comprises also comprises a current sensor, the current sensor being configured to provide signals indicative of current supplied to the electron gun. The method comprises receiving a current value, processing the current value, and based on the processing of the current value, determining whether repair or replacement of the electron gun should be scheduled. Processing the current value comprises determining whether the current value meets at least one threshold criterion, and determining whether the current value has changed by at least a threshold amount in a particular time period.

To provide a target supply system that suppresses generation of a defective target formation.SOLUTION: A target supply system comprises: a target generating part which fuses a solid target substance inside thereof to generate a liquid target substance, and ejects the liquid target substance; a loading mechanism which loads the solid target substance into the target generating part; a heater which is arranged for the target generating part; a sensor which detects the temperature of the target generating part; and a processor which controls loading timing at which the solid target substance is loaded into the target generating part, feedback-controls the heater on the basis of the current temperature detected by the sensor, and feed-forward controls the heater on the basis of the loading timing while feedback-controlling the heater.SELECTED DRAWING: Figure 14

A modular X-ray source and method for replacement of such an X-ray source are disclosed. The source is inside a consumable modular enclosure where the entire assembly is swapped out during maintenance. The enclosure covers an X-ray tube, high voltage circuit boards 6 and cooling insulating oil are arranged inside the module enclosure. The enclosure structure includes an X-ray window, connector engagement alignment guide and electrical connectors. The modular X-ray source is used in a multiple source tomosynthesis imaging system where multiple pulsed X-ray sources are utilized. The easy replacement of X-ray tube assembly inside the consumable modular enclosure results in lower maintenance cost and overall reliable X-ray imaging machine. The modular source has potential to increase the machine volume in the field and create new standards for replaceable modular X-ray source.

To improve convenience for an engineer with a simple configuration and reduce a burden in selecting a lighting field in imaging using a detection device mounted with an automatic exposure control (AEC) function inside.SOLUTION: A radiographic apparatus includes: display control means for displaying, in a display unit, a candidate of a lighting field for executing automatic exposure control in a radiation detection device for picking up a radiation image by detecting a radiation; and acquisition means for acquiring information at least including information on the shape of the radiation detection device, the number of arrangements of the lighting field in the radiation detection device, a site to be imaged, and past imaging information. The display control means displays, in the display unit, the candidate of the lighting field determined on the basis of the information acquired by the acquisition means.SELECTED DRAWING: Figure 1

A method for generating an EUV light beam (12) by converting a target material (36) into a plasma state using a plurality of laser beams (30), the method comprising: generating the plurality of laser beams (30) using a plurality of laser beam sources (20); and converting the target material (36) into the plasma state by irradiating the target material (36) with the plurality of laser beams (30). During the irradiation of the target material (36) with the plurality of laser beams (30), each laser beam (30) strikes the target material (36) for a time period (46). The time periods (46) overlap within a time interval (48).

The EUV condenser for an EUV projection exposure apparatus is used to transmit usable EUV light emitted from a source volume (19) into a condenser volume (28) separated from the source volume (19). The source volume (19) has a first source length z along a connection axis (z) between the center of the source volume (19) and the center of the condenser volume (28). s The source volume (19) has a second cross-sectional source length (x s , y s ) along cross-sectional axes (x, y) perpendicular to the connection axis (z). The EUV condenser is designed to image the source volume (19) into the condenser volume (28). Such imaging has a first imaging ratio (z c / z s ) along the connection axis (z) and a second imaging ratio (x c / x s , y c / y s ) along the cross-sectional axes (x, y). The first imaging ratio (z c / z s ) is at least 10% different from the second imaging ratio (x c / x s , y c / y s ). As a result, an EUV condenser is provided that has a higher throughput of usable EUV light to an optical system in a subsequent EUV light path of the EUV projection exposure apparatus.

The present invention relates to a calibrable optical assembly (10) comprising an optical support (12), an optical element (14) held on the optical support (12), and a retaining structure (16), wherein the optical support (12) is held in a ball joint (18) on the retaining structure (16), wherein a first calibration device (20) is provided for pivoting the optical support (12) relative to the retaining structure (16) about a first axis (24), wherein a second calibration device (22) is provided for pivoting the optical support (12) relative to the retaining structure (16) about a second axis (26), wherein the ball joint (18) is arranged between the optical element (14) and the first and second calibration devices (20, 22).

The present disclosure relates to an inspection system and method. The inspection system includes: a ray source, configured to generate rays having different energies; a detector, configured to detect a signal when a ray emitted by the ray source acts on at least one cross section of an inspected object; and a processor, in communication connection with the ray source, configured to adjust an energy of the ray emitted by the ray source according to information representing a material parameter of at least one cross section of the inspected object. The embodiments of the present disclosure is capable of being applicable to radiation inspection of multiple types of inspected objects.

A functional component is arranged in the radiation region, configured to move in a movement direction and has at least one conductive region. A position sensor has an electrical coil arrangement configured to provide a summation voltage based on sensing of the at least one conductive region. The electrical coil arrangement includes an exciter coil configured to provide an alternating magnetic field, and two series-connected sense coils configured to sense at least part of the alternating magnetic field. The sense coils and the exciter coil are arranged such that the summation voltage across the sense coils depends on a position of the functional component relative to the position sensor. The apparatus is configured to determine a position signal based on the summation voltage, the position signal relating to the position of the functional component relative to the position sensor.

An X-ray tube (110) includes: a vacuum-containing envelope (120), a housing (130), a cooling fluid (140), and an optical sensor (150). The vacuum-containing envelope (120) and the housing (130) are separated by a space, and the space is filled by the cooling fluid (140). The optical sensor (150) is arranged to detect optical arcing radiation (160) passing tangentially around the vacuum-containing envelope through the cooling fluid-filled space, and which optical arcing radiation is generated within the vacuum-containing envelope in response to an arcing event (170).

An object of the present invention is to provide an X-ray source driving circuit that has a low possibility of dielectric breakdown and can reduce the insulation distance between high-voltage circuits, and an X-ray generating device using the same that can be made lightweight and compact. In order to achieve the above object, an X-ray generating device of the present invention includes an X-ray source including a cathode electrode, an anode electrode, and a gate electrode, and generating X-rays with a driving voltage applied to each of the electrodes; a first voltage conversion unit including a first transformer and at least one voltage doubler unit that doubles a first voltage output from the first transformer; and a second voltage conversion unit including a second transformer and a voltage doubler unit that doubles a second voltage output from the second transformer, wherein the voltage doubler unit of the first voltage conversion unit generates a cathode voltage and an anode voltage having a potential difference from each other from the first voltage, and the voltage doubler unit of the second voltage conversion unit generates a gate voltage from the second voltage, and one of the electrodes on the secondary side of the second transformer is commonly connected to the cathode voltage to substantially insulate the primary side and secondary side of the second transformer, and the voltage doubler unit connected to the secondary side of the first transformer and the voltage doubler unit connected to the second transformer can form a substantially single circuit with the cathode voltage as a common potential.

An apparatus includes a tube, a body having a first body wall and a second body wall, and a support structure having a first support portion and a second support portion. The first body wall extends in a first direction, the second body wall extends in a second direction different from the first direction, a first portion of the tube passes through an opening in the second body wall, the first support portion is configured to attach to the first body wall, and a second portion of the tube is configured to pass through the second support portion when the first support portion is attached to the first body wall. An interior of the tube and an interior of the body are configured to receive a molten target material, and the target material emits extreme ultraviolet (EUV) light when in a plasma state.

This X-ray generation device comprises an X-ray generation tube, a drive circuit, and a housing container. The X-ray generation tube includes: an insulation pipe having first and second open ends; a cathode closing the first open end of the insulation pipe and including an electron-emitting portion; and an anode closing the second open end and including a target with which electrons from the electron-emitting portion collide. The housing container has a third open end, which is closed by the X-ray generation tube. The housing container is filled with an insulating liquid. The housing container defines a first space in which the drive circuit is housed, and a second space that protrudes from the first space and in which at least a part of the X-ray generation tube is housed. The housing container includes a protruding portion surrounding the second space, one end of the second space constituting the third open end. A part of the outer surface of the insulation pipe is surrounded by an X-ray blocking member extending from the anode toward the cathode so as to block X-ray. The X-ray blocking member is covered by an insulation member.

We provide a vacuum tube insertion assembly that prevents incorrect connections. [Solution] The vacuum tube insertion assembly includes a flared insertion part 40, each constructed from glass, having an annular flange 45 and a stem 46. The stem 46 extends axially from the flange 45, which surrounds the outer edge 47 of a plug recess 44 defined by the stem 46. A feedthrough pin 42 passes axially through the stem 46 and is sealed to the stem 46. The feedthrough pin 42 terminates inside the plug recess 44 to form the plug. The socket includes a receptacle that connects to the plug within the plug recess and is removably coupled to the feedthrough pin.

An automatic X-ray exposure control method and system are disclosed. The method comprises: turning on a flat-panel detector, setting parameters of the flat-panel detector, and selecting one or more exposure radiation fields of the flat-panel detector; testing a corresponding exposure dose obtained by scanning the exposure radiation fields in real time, and determining that an exposure has started when the tested exposure dose is greater than a first preset threshold; configuring the flat-panel detector such that it enters an automatic exposure control mode when the exposure is started and triggers a cut-off signal; configuring the flat-panel detector such that it triggers an image acquisition when the exposure is completed. The present disclosed method and system can simplify the structure, reduce the cost, and effectively avoid exposure dose errors caused by line delays and other problems. Meanwhile, it also shortens the image acquisition cycle and reduces the complexity of operation.

Method for detecting high-voltage flashovers in an X-ray device (2) comprising an X-ray source (6) and a high-voltage supply (4), wherein the X-ray source (6) comprises an X-ray tube (10) and the high-voltage supply (4) comprises a high-voltage generator (7) and at least one cable (14), wherein the at least one cable (14) is at least part of a connecting path (VS) between the high-voltage generator (7) and the X-ray tube (10), characterized in that during normal operation of the X-ray device (2), a disturbance pulse (I) is detected and evaluated, which occurs due to the high-voltage flashover in the connecting path (VS), and that different flashover classes are determined based on the evaluated disturbance pulse (I), in particular on - Breakovers in the vacuum of the X-ray tube (10) - Flashovers in an insulating material - Partial discharges.

An X-ray generating apparatus includes an X-ray tube, an X-ray tube housing, and a power supply section configured by sealing an internal circuit board for supplying a voltage to the X-ray tube in an insulating inner portion. An insulating oil is enclosed in a space delimited by an upper surface of the insulating block and an inner surface of the X-ray tube housing. A high-voltage feed section connected to a target support section is disposed on the upper surface. At least one protruding portion protruding to a position further to the insulating valve side than a boundary portion of the high-voltage feed section, the upper surface, and the insulating oil and surrounding the high-voltage feed section when viewed in a tube axis direction is provided on the upper surface. A top of the protruding portion is separated by a gap from a virtual plane including an end portion of the insulating valve and extending in a direction orthogonal to the tube axis.

An X-ray therapy method using an X-ray device includes: arranging the cathode device of an X-ray source in an imaging mode to focus electrons onto a focal region of a first size on the anode. In imaging mode, the X-ray source is actuated to emit an X-ray beam toward an X-ray detector to obtain a first X-ray image of a target. Based on a comparison of the first X-ray image and a diagnostic image, the X-ray source or object is adjusted to register the target with its diagnostic image, and the X-ray source is directed toward the target. The cathode device is switched to a power mode to focus electrons onto a second focal region of a second size on the anode, which is larger than the first size. In power mode, the X-ray source is actuated to deliver a therapeutic X-ray dose to the target.

The present invention relates to a method and system for predicting X-ray degradation, the system comprising; a generator (10) configured to generate a deployment fingerprint data set for recording cumulative radiation exposure of a currently deployed X-ray tube; a database (20) configured to provide a training data set comprising multiple tube fingerprint data sets for recording cumulative radiation exposure of previously deployed X- ray tubes correlated with failures of the previously deployed X-ray tubes; and a neural network (30) configured to be trained using the training data set and configured to predict at least one parameter of the currently deployed X-ray tube based on the training.

Provided is a total reflection X-ray fluorescence spectrometer which has high analysis sensitivity and analysis speed. The total reflection X-ray fluorescence spectrometer includes: an X-ray source that has an electron beam focal point having an effective width in a direction parallel to a surface of a sample, and orthogonal to an X-ray irradiation direction, that is larger than a dimension in the irradiation direction; a reflective optic that has an effective width in the orthogonal direction that is larger than that of the electron beam focal point, and has a curved surface in the irradiation direction; and a plurality of detectors that are arranged in a row in the orthogonal direction, and are configured to measure intensities of fluorescent X-rays emitted from the sample irradiated with primary X-rays focused by the reflective optic.

An X-ray inspection apparatus that performs an inspection of an inspection object by detecting X-rays emitted to and transmitted through the inspection object includes: a housing; an X-ray detection portion that is disposed in the housing and detects the X-rays; an air conditioner that cools an inside of the housing; and first dehumidifying means and second dehumidifying means for dehumidifying the inside of the housing.

A rolling mode triboelectric soft X-ray emitting device, which generates soft X-rays through rolling friction, comprises a system support, a driving structure comprising a driving motor, a driving shaft and a first triboelectric material layer, the driving motor being configured to drive the driving shaft to rotate, a rotating structure comprising a rotating shaft and a second triboelectric material layer, the rotating shaft being rotatably mounted to the system support, and a transmission structure comprising a transmission belt, the transmission belt being sleeved on the driving shaft and the rotating shaft and having a third triboelectric material surface, wherein the electronegativities of the first, second and third triboelectric materials are different from each other. The present application adopts a closed-loop transmission belt mechanical structure in a vacuum environment, replaces the traditional reciprocating contact or single adhesive tape peeling structure, realizes continuous and stable emission of triboelectric X-rays, and effectively solves the problems of fast material consumption and discontinuous operation in the prior art.

To modify some of the characteristics of the light pulses generated by an extreme ultraviolet light source. [Solution] An extreme ultraviolet (EUV) light pulse is formed by illuminating a semiconductor material of a modulation system with a first light beam having a first wavelength, applying a voltage to the semiconductor material for a certain duration that is sufficient to modify the refractive index of the semiconductor material so that the polarization state of a light beam having a second wavelength passing through the semiconductor material is modified and passes through at least one polarization-based optical element of the modulation system, and passing the semiconductor material through a second light beam having a second wavelength for the duration thereof to form a light pulse.