28 results about "Electron linac" patented technology

An ion implantation system including an ion source for generating an ion beam, an end station for holding a substrate to be implanted by the ion beam, and a linear accelerator disposed between the ion source and the end station and adapted to accelerate the ion beam, the linear accelerator including a beam tube for transmitting the ion beam, the beam tube having at least five adjoining sidewalls, at least one resonator coupled to the beam tube, and at least one turbomolecular pump coupled to the beam tube, wherein at least one of the at least five adjoining sidewalls of the beam tube has an opening formed therein for providing access to an interior of the beam tube.

An ion implantation system including an ion source for generating an ion beam, an end station for holding a substrate to be implanted by the ion beam, and a linear accelerator disposed between the ion source and the end station and adapted to accelerate the ion beam, the linear accelerator including a beam tube for transmitting the ion beam, the beam tube having at least five adjoining sidewalls, at least one resonator coupled to the beam tube, and at least one turbomolecular pump coupled to the beam tube, wherein at least one of the at least five adjoining sidewalls of the beam tube has an opening formed therein for providing access to an interior of the beam tube.

A linear accelerator apparatus may include a beamline enclosure that defines a polygonal backbone, and a plurality of acceleration stages, disposed along a length of the beamline enclosure. A given acceleration stage may include a drift tube assembly to conduct an ion beam therethrough, a resonator, coupled to deliver an RF signal to the drift tube assembly, and a quadrupole assembly to shape the ion beam. As such, at a first acceleration stage, a first resonator may be disposed along a first side of the polygonal backbone, and at a second acceleration stage, adjacent to and downstream of the first acceleration stage, a second resonator may be disposed along a second side of the polygonal backbone, different from the first side.

An ion implantation system has a first linear accelerator for accelerating ions of an ion beam to a first energy along a beam path. A second linear accelerator positioned downstream of the first linear accelerator along the beam path accelerates the ions to a second energy. A charge stripper has a stripper tube with a passageway positioned between the first and second linear accelerators. A charge stripping medium is provided in the passageway to strip at least one electron from the ions as the ion beam passes through the charge stripping medium. A focusing apparatus is associated with the stripper tube to control a trajectory of the ions within the passageway of the stripper tube. The focusing apparatus can be two or more quadrupoles and include an electrostatic lens, a magnet, a solenoid, or a Einzel lens.

A resonator is provided for an RF linear accelerator and has a housing defining a housing volume. An electrode is configured to accelerate ions and is disposed external to the housing volume. A tube is electrically conductive and has an electrode portion and a coil portion. The electrode portion 5 is electrically coupled to the electrode. The tube is generally defined by a tube diameter. The coil portion has a predetermined shape when viewed along a first axis and is disposed within the housing volume. The coil portion defines a coil length when viewed perpendicular to the first axis. The coil portion of the tube is turned three 10 or fewer turns about the first axis. The coil length is less than approximately six times the tube diameter, and six times the tube diameter is less than approximately 1500mm.

The invention relates to a target assembly for generating x-ray radiation, to an electron linear accelerator, and to a fixed anode transmission x-ray tube. The target assembly according to the invention for generating x-ray radiation has: - a heat sink and - a target element for impinging with electrons, said target element being integrated into the heat sink in order to cool the target element and being structurally distinguishable from the heat sink, wherein the heat sink consists of a metal-diamond composite material, and the metal-diamond composite material consists of diamond grains between which metal is located. The invention is characterized in that the grain size of the metal-diamond composite material varies within the heat sink.

The invention relates to an X-ray system for inspecting N objects (O), in particular N battery modules for quality control, having the following features: a linear accelerator (1), which is designed to emit X-rays (R) with an energy ≥ 1 MeV at a conical radiation angle (8); N X-ray detectors (13a, 13b, 13c, 13d), which are each designed to detect the X-rays (R) in a partial cone (8a, 8b, 8c, 8d) of the conical radiation angle (8); N axes of rotation (12a, 12b, 12c, 12d) and (4a, 4b) for N objects (O), which are each assigned to a partial cone (8a, 8b, 8c, 8d) and are arranged in each of them; a collimator (3, 3'), which is designed with two stages, wherein a first stage defines the conical radiation angle (8) at which the X-rays (R) are emitted, and wherein a second stage (10) defines the N partial cones (8a, 8b, 8c, 8d).

A food irradiation system comprising a plurality of compact linear accelerator systems is described herein. Each of the plurality of compact linear accelerator systems includes: a high energy particle beam source providing a particle beam up to 10 MeV; an emission target assembly configured to generate bremsstrahlung x-rays when impacted by particles of the particle beam; and a drift tube through which the particle beam passes on a path from the high-energy particle beam source to the emission target assembly. The emission target assembly is positioned at the distal end of the drift tube for direct impinging of the particle beam to generate bremsstrahlung x-rays in the directed radiation beam. Each of the plurality of compact linear accelerator systems is individually positioned such that the plurality of compact linear accelerator systems as a group provide directed radiation beam coverage for the total cumulative volume at a prescribed radiation dose level.

A linear accelerator apparatus may include a beamline enclosure that defines a polygonal backbone, and a plurality of acceleration stages, disposed along a length of the beamline enclosure. A given acceleration stage may include a drift tube assembly to conduct an ion beam therethrough, a resonator, coupled to deliver an RF signal to the drift tube assembly, and a quadrupole assembly to shape the ion beam,. As such, at a first acceleration stage, a first resonator may be disposed along a first side of the polygonal backbone, and at a second acceleration stage, adjacent to and downstream of the first acceleration stage, a second resonator may be disposed along a second side of the polygonal backbone, different from the first side.

The invention relates to a device for producing radionuclides, in particular diagnostic and therapeutic radionuclides, on the basis of the principle of photo-nuclear radiation, comprising an electron accelerator (1), which generates an electron beam (2) with temporal structural features for the linear electron accelerator (1), a converter target assembly (21), which is arranged between the electron accelerator (1) and the converter target assembly (21), the invention relates to a converter target assembly (21) for generating radionuclides, comprising a converter target (20) for converting the electron beam (2) into bremsstrahlung photons (15), a plurality of production targets (17) irradiated by the bremsstrahlung photons (15) in order to generate the radionuclides, the converter target assembly (21) comprising a sealed housing (9) enclosing a cavity (19) accommodating the converter target (20), comprising an entrance window with a window disk (23) for the electron beam (2) and an exit window for the bremsstrahlung photons (15), comprising cooling medium ports (10) which are part of a cooling circuit (11) for establishing a cooling flow through the cavity (19) in order to cool the converter target (20) and the window disk (23), the converter target (20) comprises a plurality of rotatable converter discs (12), the electron beams (2) are arranged off-center with respect to the respective converter discs (12), and wherein the respective converter discs (12) are designed to rotate during operation of the device such that the converter discs (12) are arranged on the converter target (20) over time. The focus of the electron beam (2) is dispersed onto an annular region (14) of the converter disk (12) in multiple rotations.

An ion implantation system has a first linear accelerator for accelerating ions of an ion beam to a first energy along a beam path. A second linear accelerator positioned downstream of the first linear accelerator along the beam path accelerates the ions to a second energy. A charge stripper has a stripper tube with a passageway positioned between the first and second linear accelerators. A charge stripping medium is provided in the passageway to strip at least one electron from the ions as the ion beam passes through the charge stripping medium. A focusing apparatus is associated with the stripper tube to control a trajectory of the ions within the passageway of the stripper tube. The focusing apparatus can be two or more quadrupoles and include an electrostatic lens, a magnet, a solenoid, or a Einzel lens.

A linear accelerator having a plurality of cavities along a beam line supplied with power by a pair of distribution waveguide manifolds having a sequence of feed arms connecting the manifolds to unit portions and a single RF (Radio Frequency) feed is described herein. The distribution waveguide manifolds are connected to the unit portions such that alternating pairs of unit portions are connected to opposing distribution waveguide manifolds. Each cavity is individually optimized according to the electron velocity along the beam line. The geometry of the unit joints and connection channels between the manifolds and cavities may be individually optimized along beam lines, and may include serpentine configurations to provide consistent RF channel lengths between the manifolds and different cavities. Methods of designing linear accelerators and manufacturing accelerators are also provided.

Radiation beam alignment for a linear accelerator (LINAC) and gantry comprising steps of: For each beam alignment parameter value in a set (for example A-D): (a) With the beam alignment parameter of t

Beam monitors, methods of use, and methods of manufacture are provided herein. The beam monitor may include a rounded beam cavity having one or more waveguides attached thereto, signals from the one or more waveguides may be used to determine one or more beam characteristics. Such a monitor may include a beam intensity monitor that includes a cylindrical beam cavity having a rectangular waveguide extending from a periphery from which a beam intensity may be determined. The advanced beam monitor may include a multi-mode beam cavity having a plurality of waveguides connected at different locations, each location corresponding to a different excitation mode. Such a monitor may include an elliptical beam cavity and five waveguides connected thereto, signals from the five waveguides may be used to determine beam charge, beam position, and beam size in x-and y-directions. The beam monitor may be a separate device and may also be integrated within the linear accelerator. The accelerator may include an off-axis beam monitor coupling port and an on-axis tuning feature.

A linear accelerator. The linear accelerator may include a buncher to generate a bunched particle beam from a charged particle beam, and a plurality of acceleration stages, to accelerate the bunched particle beam. The linear accelerator may further include a phase control system, to individually measure a phase of an RF signal that is applied at a first frequency to a given acceleration stage of the plurality of acceleration stages. The phase control system may include an RF signal pickup assembly, comprising a plurality of RF signal detectors, arranged separately in the plurality of acceleration stages. The phase control system may further include a phase measurement circuit, to convert an RF pickup signal, received from an RF signal detector of the RF pickup assembly, into a digital baseband signal, for determining a phase of the RF signal.

Excessive latency between initiating magnetic resonance (MR) imaging of a moving body part and treatment with a linear accelerator (linac) mean that targeting may be out of date leading to dosimetry e

A method for generating electron density maps of a region of interest of a subject for adaptive radiation therapy using a magnetic resonance (MR) linear accelerator (Linac) radiation treatment system includes receiving a radiation treatment plan associated with the region of interest of the subject, acquiring a plurality of projections using one or more X-ray beams from a linear accelerator and a flat panel detector of the MR-Linac system, reconstructing one or more projection images based on the one or more projections, generating one or more electron density maps based on the one or more projection images, and generating an updated radiation treatment plan associated with the region of interest of the subject based on the one or more electron density maps.

The invention relates to a target assembly for generating x-ray radiation, to an electron linear accelerator, and to a fixed anode transmission x-ray tube. The target assembly according to the invention for generating x-ray radiation has: - a heat sink and - a target element for impinging with electrons, said target element being integrated into the heat sink in order to cool the target element and being structurally distinguishable from the heat sink, wherein the invention is characterized in that the target element has a segmentation which deviates from a cylindrical shape.

A linear accelerator comprises side-coupled cavity cells configured to accelerate electrons with a radio frequency field. The field amplitude in the initial cells is lower than in the later cells, and the initial cells are shorter than the later cells. This creates a capture section where electrons are captured and bunched while experiencing low acceleration, followed by an acceleration section where the bunched electrons experience stronger acceleration.

A multifrequency linear accelerator system (100) which can be used to generate multidirectional particle beams (101. 102) for, e.g., multidimensional radiotherapy and X-ray imaging is described. The system (100) comprises an electromagnetic ‘EM’ source (104), a first linear accelerator (106) operable at a first frequency, a second linear accelerator (108) operable at a second, different, frequency, a first circulator (110) and a second circulator (112). The first linear accelerator (106) is arranged to received EM power (118) supplied from the EM source at the first frequency via the first circulator (110), and the second linear accelerator (108) is arranged to receive EM power (120) supplied by the EM source at the second frequency via the first circulator (110) and the second circulator (112).

The application provides a method for installing solenoid of an electron linear accelerator, which comprises the following steps: setting a front stand; setting a middle stand for installing at least one component of the front part in the rear section and a solenoid focusing assembly, wherein the solenoid focusing assembly is slidably arranged on the middle stand; setting a rear stand for installing an accelerating tube assembly; when replacing the solenoid, removing all the components of the front part on the middle stand and the support seat thereon, moving the solenoid focusing assembly towards the front stand to make the solenoid out of the accelerating tube; assembling a new solenoid into the solenoid focusing assembly and moving the solenoid focusing assembly towards the rear stand to make the solenoid into the accelerating tube; then, assembling the support seat on the middle stand; and installing the removed components on the middle stand and performing system collimation.

Embodiments herein are directed to a linear accelerator assembly for an ion implanter. In some embodiments, a LINAC may include a coil resonator and a plurality of drift tubes coupled to the coil resonator by a set of flexible leads.

A linear accelerator. The linear accelerator may include a buncher to generate a bunched particle beam from a charged particle beam, and a plurality of acceleration stages, to accelerate the bunched particle beam. The linear accelerator may further include a phase control system, to individually measure a phase of an RF signal that is applied at a first frequency to a given acceleration stage of the plurality of acceleration stages. The phase control system may include an RF signal pickup assembly, comprising a plurality of RF signal detectors, arranged separately in the plurality of acceleration stages. The phase control system may further include a phase measurement circuit, to convert an RF pickup signal, received from an RF signal detector of the RF pickup assembly, into a digital baseband signal, for determining a phase of the RF signal.

A high gradient linear accelerating structure can propagate high frequency waves at a negative harmonic to accelerate low-energy ions. The linear accelerating structure can provide a gradient of 50 MV / m for particles at a β of between 0.3 and 0.4. The high gradient structure can be a part of a linear accelerator configured to provide an energy range from an ion source to 450 MeV / u for 12C6+ and 250 MeV for protons. The linear accelerator can include one or more of the following sections: a radiofrequency quadrupole (RFQ) accelerator operating at the sub-harmonic of the S-band frequency, a high gradient structure for the energy range from ˜45 MeV / u to ˜450 MeV / u.

X-ray system for examining N objects (O), in particular N battery modules for quality control, comprising: a linear accelerator (1) configured to emit X-rays (R) of an energy ≥ 1 MeV in a conical beam angle (8); N X-ray detectors (13a, 13b, 13c, 13d), each configured to detect the X-rays (R) in a sub-cone (8a, 8b, 8c, 8d) of the conical beam angle (8); N rotation axes (12a, 12b, 12c, 12d) and (4a, 4b) for N objects (O), each assigned to a sub-cone (8a, 8b, 8c, 8d) and arranged in each; a collimator (3, 3') which is designed in two stages, wherein a first stage defines the conical emission angle (8) in which the X-ray radiation (R) is emitted and wherein a second stage (10) defines the N partial cones (8a, 8b, 8c, 8d).

Linear accelerators with accelerator sections, X-ray source including the same, and methods of operating a linear accelerator are disclosed. A linear accelerator can include a first section having a first acceleration axis, a second accelerator having a second acceleration axis oblique to the first acceleration axis, and a radiofrequency source coupled to the first acceleration section and second acceleration section.

A linear accelerator system according to an embodiment is for generating an MeV electron beam. The linear accelerator system includes a linear accelerator cavity having an enclosure, wherein the enclosure is open at one end to provide an exit port for the MeV electron beam; and a switchable magnet unit designed to, in a deflection mode, generate a magnetic field within the linear accelerator cavity to enable at least one electron, emitted within the linear accelerator cavity, to interact with the enclosure due to deflection away from the exit port caused by the magnetic field. Accordingly, in an embodiment, in the deflection mode, an intensity of the MeV electron beam passing through the exit port is relatively lower than an intensity of the MeV electron beam passing through the exit port in a beam generation mode of the switchable magnet unit.