68results about "Irradiation devices" patented technology

This invention relates to a pre-fabricated tritium target based on a polycrystalline film and its manufacturing method, belonging to the field of plasma technology. The pre-fabricated tritium target includes an oxygen-free copper target substrate, a first zirconium film, a high-entropy ceramic tritium-blocking layer, and a second zirconium film sequentially deposited on its surface. The manufacturing method includes: pre-treating the oxygen-free copper target substrate; sequentially depositing multiple layers of films using a magnetron sputtering process to form a polycrystalline film layer; purging the oxygen-free copper target substrate with the polycrystalline film layer with tritium; and bonding the oxygen-free copper target substrate to an oxygen-free copper target holder. The pre-fabricated tritium target based on a polycrystalline film of this invention solves the problem of balancing heat dissipation and tritium blocking performance in traditional processes, achieving a balance between heat dissipation and tritium blocking capabilities. This allows the prepared pre-fabricated tritium target to be reused, improving the utilization rate of the pre-fabricated tritium target and reducing the cost of using neutron tubes.

The present application relates to the technical fields of research reactor material irradiation, and specifically relates to a kind of with autonomous rotating function's pressure hole irradiation device, including remote terminal and sequentially connected driving section, protection tube and test section, driving section is set in the pressure hole mouth outside, including transmission shaft, power transmission component, servo motor and controller, transmission shaft is connected with protection tube, servo motor is installed in the side direction of transmission shaft, controller is electrically connected with servo motor, remote terminal is connected with controller, power transmission component includes transmission shaft gear and the motor gear meshed with transmission shaft gear, transmission shaft gear is coaxially keyed with transmission shaft, motor gear is coaxially keyed with servo motor output shaft;Transmission shaft and protection tube are provided with the gas outlet pipe and several gas inlet pipes communicated with test section.In the present application, the mode of remote control of servo motor is used, the irradiation device of the test piece can be realized autonomous rotation and test piece temperature control function, and the accuracy and reliability of test result are improved.

One exemplary adjustable collimator includes a housing having an aperture through which radiation is directed from an entrance to an exit of the housing, a first shutter 206 and a second shutter 208 within the housing, a first link 222 coupled to the first shutter, and a first yoke 218 coupled to the housing at a pivot point (at 220) and configured to pivot relative to the housing. The first yoke is configured to reduce the effective width of the aperture by moving the first shutter toward the second shutter via the first link when the first yoke is rotated in a first direction (here, clockwise).

An anode potential adjustment device and an electron accelerator. The electron accelerator comprises a first electrode sheet (201), a second electrode sheet (202) and a high-voltage end (203), wherein the high-voltage end (203) is connected to the first electrode sheet (201). The anode potential adjustment device comprises a varistor (101) and an oil cylinder (102), wherein the varistor (101) is connected between the first electrode sheet (201) and the second electrode sheet (202); and the oil cylinder (102) is connected to a hydraulic pump by means of a hydraulic oil pipe, a piston of the oil cylinder is connected to the varistor (101), and the piston is configured to drive the varistor (101) to adjust a resistance value. The anode potential adjustment device can observe changes of a beam in real time when a high voltage and the beam exist at the same time, thereby making it easier to select an anode resistor (1010).

A method of designing an assembly includes defining an observable field, defining a model of the assembly based on a set of parameters, and performing an inverse optimization of the set of parameters such that the model of the assembly after activation produces the observable field. An assembly includes a first material and a second material. The assembly is configured to be differentially activatable via particle bombardment. An observable field of the assembly is complex. Advantageously the differentially activatable assembly can be stable prior to activation, self-contained, activated after construction, and provides unique three-dimensional or four-dimensional observable fields.

The application relates to a target assembly for the irradiation area of a pneumatic rabbit system for medical isotope preparation, comprising a terminal transmission pipeline and a rabbit capsule, wherein the terminal transmission pipeline comprises a main transmission pipeline, an outer pipeline, an air path sealing piece and a pipeline end head; the two ends of the main transmission pipeline are connected with the air path sealing piece and the pipeline end head respectively, so as to form a main transmission air path; the outer pipeline comprises a middle layer sleeve and an outer layer sleeve; the middle layer sleeve is sleeved outside the main transmission pipeline and connected with the air path sealing piece and the pipeline end head at the two ends respectively, so as to form a middle layer ventilation channel; the outer layer sleeve is sleeved outside the middle layer sleeve and connected with the air path sealing piece and the pipeline end head at the two ends respectively, so as to form an outer layer ventilation channel; the middle layer ventilation channel and the outer layer ventilation channel are communicated with the main transmission air path; the air path sealing piece is used for air supply and exhaust; the rabbit capsule is used for loading and transporting isotope targets, and the rabbit capsule is arranged inside the main transmission pipeline of the terminal transmission pipeline; the target assembly has the functions of transmission, buffering and heat dissipation.

This invention provides a neutron irradiation device that can deliver neutrons tailored to the patient's body shape and the affected area during BNCT treatment. The neutron irradiation device is a neutron generator attached to a robot arm, comprising: a neutron generator capable of emitting neutrons emitted from a neutron source through an opening formed in the housing; and a deceleration module detachably attached to the opening for slowing down neutrons emitted from the neutron source.

The present invention provides an electron beam irradiation device that can suppress rusting of magnetic shielding members. [Solution] The electron beam irradiation apparatus 10 comprises a shielding wall 33 having a through hole 34, an accelerator chamber 31 and an irradiation chamber 32 separated from each other by the shielding wall 33, an accelerator Ea housed in the accelerator chamber 31, a scanner 40 housed in the irradiation chamber 32, a connecting pipe 35 inserted through the through hole 34 and connecting the accelerator Ea and the scanner 40, a magnetic shielding member 36 covering the periphery of the connecting pipe 35, a partition 50 provided in the irradiation chamber 32, a shield housing section S1 which is a space partitioned from the space in the irradiation chamber 32 by the partition 50 and houses the magnetic shielding member 36, and a purge air supply section 60 which supplies purge air into the shield housing section S1.

Disclosed herein is a transportable beamline (100, 200) for ion beam irradiation, in particular small animal ion beam irradiation, and a method (700) of aligning a transportable beamline. The beamline (100, 200) is configured to receive an ion beam (102), in particular a proton beam, from an ion beam source and to guide the ion beam (102) along a beam path (104) to a target point (106) that is to be irradiated. The beamline (100, 200) comprises: an energy degrader (108, 500) for decelerating ions in the ion beam (102); a collimator (110, 400) for collimating the ion beam (102); a focusing assembly (112) for focusing the ion beam (102), the focusing assembly (112) being arranged downstream of the energy degrader (108, 500) and the collimator (110, 400) along the beam path (104) for the ion beam (102) and comprising two or more quadrupole magnets (112A-C) arranged along the beam path (104); and a common base structure (114) to which at least the collimator (110, 400) and the focusing assembly (112) are mounted, the common base structure (114) being configured to preserve relative alignment between the collimator (110, 400) and the two or more quadrupole magnets (112A-C) during transport of the beamline (100, 200), wherein some or all of said two or more quadrupole magnets (112A-C) are removably mounted to the common base structure (114) via a respective kinematic mount (116, 300).

The invention relates to a system for conveying transport devices (7) capable of carrying articles intended to undergo a treatment in a specific treatment zone (5), the conveying system comprising an overhead conveyor (6) having a rolling track (64) on which trolleys (8) move at a first speed, each trolley carrying a suspended transport device (7), wherein a suspended transport device (7) has a lower end provided with securing means (71), and wherein the system further comprises a secondary movement device (12, 13, 14) arranged in the treatment zone, the lower part of which secondary movement device has drive means (132) configured to cooperate with the securing means (71) in order to control the movement of the transport device (7) in the treatment zone (5) at a second speed which is slower than the first speed.

To provide a radioactive nuclide production system and a radioactive nuclide production method which improve cooling performance of a target material including a material nuclide, suppress contamination of impurities to the target material, and are capable of efficiently producing a radioactive nuclide.SOLUTION: A radioactive nuclide production system 1 comprises: a particle beam irradiation device 10 which generates a particle beam 11; and a target 20 which generates radioactive nuclide by irradiation of the particle beam 11. In the target 20, a target material 21 including a material nuclide generating the radioactive nuclide is mounted on a target cooling plate 22 cooling the target material 21. In a radioactive nuclide production method, the target material 21 including the material nuclide forms the target 20 mounted on the target cooling plate 22 cooling the target material 21, and the target 20 is irradiated with the particle beam 11 or bremsstrahlung while cooling the target material 21 by the target cooling plate 22 to produce radioactive nuclide.SELECTED DRAWING: Figure 1

The invention relates to a device (1) for irradiating a sample with optical radiation, the device (1) comprising a sample container holder (2) for a sample container with at least two cavities, wherein each cavity of a sample container in the state positioned on the device (1) is assigned or assignable a separate irradiation area (3) of the device (1), so that the device (1) has as many separate irradiation areas (3) as a sample container has cavities, and control electronics (4), characterized in that the irradiation areas (3) each comprise at least four irradiation units (5), wherein the emittable spectral ranges of the at least four irradiation units (5) differ.

The objective is to provide an X-ray tube that can reduce thermal stress in the sealing portion and improve heat dissipation, as well as a method for manufacturing an X-ray tube. [Solution] The X-ray tube according to the embodiment comprises a container having a space inside, an X-ray generating unit provided inside the container and having a cathode structure and an anode structure, a sealing part provided between the inner wall of the container and the X-ray generating unit and containing an insulating resin, and a peeling part provided on at least a part of either the inner wall of the container or the outer surface of the X-ray generating unit and suppressing bonding with the sealing part.

Neutron generating targets, for example for use in boron neutron capture therapy ("BNCT"), and methods for manufacturing the neutron generating targets. This specification describes lithium-containing neutron generating targets useful for generating neutron beams for bombarding boron-containing compounds in boron neutron capture therapy of cancer. One method involves pressing a lithium foil against a substrate with sufficient force such that the lithium deforms during the pressing operation and adheres to the substrate, thereby forming a thin lithium layer on the surface of the substrate.

This utility model discloses a shelf for electron beam irradiation, including a tray and a support frame mounted on the tray for supporting products to be irradiated. Both the tray and the support frame are formed with channels for the electron beam to pass through vertically. By providing channels for the electron beam to pass through vertically on the tray and the support frame, the obstruction encountered by the electron beam during emission is reduced, allowing the electron beam to penetrate the product to be irradiated more smoothly. Compared with existing ordinary tray-type shelves, this significantly improves the electron beam irradiation efficiency and effectively solves the problem of reduced irradiation efficiency caused by the tray bottom plate obstructing the electron beam in the prior art.

Radiation risks to workers may be high. [Solution] A neutron capture therapy system (100) includes an accelerator (200) for generating a charged particle beam (P), a neutron generator (10) that reacts with the charged particle beam (P) to generate a neutron beam (N), and a beam shaper (20). The beam shaper (20) includes a housing (21), a moderator (22), a reflector (23), a thermal neutron absorber (24), a radiation shield (25), and a beam outlet (26). The housing (21) is provided with a vacuum tube (30) connected to the accelerator (200). The vacuum tube (30) transfers the charged particle beam (P) accelerated by the accelerator (200) to the neutron generator, which can react with the charged particle beam (P) to generate neutrons. The neutron generator (10) moves between a first position and a second position. At the first position, the neutron generator (10) can react with the charged particle beam (P) to generate neutrons. At the second position, the neutron generator (10) detaches from the beam shaper (20).

The present invention provides a target for use in a neutron capture therapy system and a particle beam generator that can improve the heat dissipation performance of the target, reduce foaming, and extend the service life of the target. [Solution] The neutron capture therapy system includes a neutron generator and a beam shaping body. The neutron generator includes an accelerator and a target. A charged particle beam accelerated and generated by the accelerator interacts with the target to generate a neutron beam. The target includes an action layer that interacts with the charged particle beam to generate a neutron beam, a foam suppression layer that suppresses foaming caused by the charged particle beam, a first heat dissipation layer, and a second heat dissipation layer. The first heat dissipation layer directly and rapidly conducts the heat accumulated in the action layer to the second heat dissipation layer, and the second heat dissipation layer dissipates the heat using a cooling medium.

The present application improves analysis accuracy and shortens measurement time by preventing the intensity of fluorescent X-rays to be detected from decreasing. A fluorescent X-ray analysis device having a sample chamber in which a sample is disposed and an irradiation chamber separated from the sample chamber by using a partition, the fluorescent X-ray analysis device having: an X-ray source disposed in the irradiation chamber and obliquely irradiating X-rays toward an opening provided on a partition wall between the sample chamber and the irradiation chamber; a window frame member formed of a material that transmits the X-rays, holding a partition film that constitutes a part of the partition, and disposed in the opening provided in the partition wall; and a film support member having an elongated hole through which the X-rays pass, disposed in abutment with the partition film on the irradiation chamber side, and supporting the partition film from the irradiation chamber side, wherein the film support member is disposed such that the elongated hole is parallel to an optical axis of the X-rays in a plan view from the sample chamber side toward the irradiation chamber side.

To prevent radiation leaking from shielding measures from reaching specific areas. [Solution] The electron beam irradiation device (100) comprises an electron beam generator (4) that generates an electron beam, a transport cylinder (5) that transports the paper (P) so that it passes through the irradiation area (IR) irradiated by the electron beam by holding and rotating a part of the paper (P) to be irradiated by the electron beam, a shielding structure (8) provided around the irradiation area (IR) in the transport cylinder (5) to shield the radiation, and a guide structure (10) that guides the radiation leaked from the end of the shielding structure (8) in a specified direction.

A neutron capture therapy system includes an accelerator generating a charged particle beam, a transmission device transmitting the charged particle beam, a neutron generating part generating a neutron beam in reaction with the charged particle beam, a beam shaping body adjusting the energy spectrum of the neutron beam, and a guide device, the transmission device at least including a first transmission part and a second transmission part detachably connected with the first transmission part, the first transmission part including a first position and a second position, the guide device guiding the first transmission part and the neutron generating part to move from the first position to the second position, the neutron generating part arranged on the first transmission part being accommodated in the beam shaping body when the first transmission part is located at the first position, and the neutron generating part arranged on the first transmission part being separated from the beam shaping body when the first transmission part is located at the second position. In this way, a safe distance between the operator and the neutron generating part is maintained, the time of the operator contacting the radiation is reduced, and a safe, reliable and stable solution for recycling the neutron generating part is provided.

This invention discloses a method for fabricating angstrom-sized channels in two-dimensional material thin films using helium ion beam irradiation, belonging to the field of two-dimensional material angstrom-sized hole preparation technology. A two-dimensional transition metal dichalcogenide thin film is transferred onto a clean substrate containing through-holes, ensuring the through-holes are fully covered by the film, forming a suspended structure. Single-atom vacancy angstrom-sized holes are prepared using a helium ion beam irradiation mode with small pixel pitch, low processing dose, and large-area processing. High-temperature annealing stabilizes defects, and the hole size can be controlled through secondary etching. Ion permeability testing verifies the hole formation. This invention utilizes the aforementioned method for fabricating angstrom-sized channels in two-dimensional material thin films using helium ion beam irradiation, achieving precise and controllable fabrication of angstrom-sized holes with minimal lattice damage, no doping contamination, and strong process versatility, applicable to fields such as biomolecular detection and angstrom-level membrane separation.

The invention relates to a method for manufacturing a component (6) with a target (7) formed from bismuth for the production of Astat-211, characterized in that powder (3) formed from bismuth is pressed in a press (1) under the application of heat. The invention relates to a component that can be manufactured according to the method, and to the use of the component on a cyclotron for the production of Astat-211.

The invention relates to a target transport system (1) for a radionuclide generation system, comprising: - a conduit (5) for transporting irradiation targets (7) through the radionuclide generation system; - a target drive system (9) configured to drive the irradiation targets (7) through the conduit (5); - a counting system (12) configured to count the number of irradiation targets (7) passing through the conduit (5). The counting system (12) comprises at least two distance sensors (15), each distance sensor being configured for measuring a radial distance (d1, d2) between the distance sensor (15) and an irradiation target (7), and being arranged at the same axial position along the conduit (5) and regularly spaced at a constant angular distance along the circumference of the conduit (5).

Embodiments are provided relating to the exchange of devices or assemblies holding targets used in a beam system. With these embodiments a used target can be rapidly and safely replaced with a new target to permit continued operation in a clinical or other environment. Also provided are embodiments of valves having relatively lower profiles that facilitate engagement and disengagement of beamline sections for access to the target device or assembly. All or a portion of the valve can be part of the target assembly. Also provided are embodiments of storage containers for storing a volatile object, such as an object comprising a composition sensitive to atmospheric air and / or an object that is radioactive. The storage container can include a two-part shell case assembly configured for housing a volatile object between the two parts, which engage one another to form an air-tight seal therebetween.

The application discloses a neutron irradiation sample box convenient for remote operation and a dismounting tool thereof, and belongs to the cross field of nuclear science and technology application and equipment manufacturing. The sample box comprises a sample cover, a sealing sheet, a sample inner grid and a cavity. The sample cover is in threaded connection with the cavity. The sealing sheet is sealed by plastic deformation. The sample inner grid is divided into partition compartments for placing samples. The dismounting tool comprises an installation base, a screwing handle, a lower jaw, a circular arc knife edge, a sample box separation nut and an arched sample box positioning block and the like. The sample box is convenient for remote operation of adding and removing samples by special design. The non-welding sealing is adopted to guarantee sample irradiation conditions. The dismounting tool can be remotely operated in the whole process. The application further increases innovative features such as radiation-resistant adhesive, a pressure sensor and a fine adjustment device, improves sealing stability and operation accuracy, and solves the problems of inconvenience in remote operation, sealing and sample adding and removing of the traditional sample box.

An electron beam control device and an electron accelerator, which relate to the field of electron accelerators. The electron accelerator comprises a first electrode sheet (201), a second electrode sheet (202), an electron gun (204) and a high-voltage end (203), wherein the high-voltage end (203) is connected to the first electrode sheet (201); and a cathode of the electron gun (204) is arranged between the first electrode sheet (201) and the second electrode sheet (202). The electron beam control device comprises a first hydraulic cylinder (301) and a control switch (302), wherein the control switch (302) is connected between the high-voltage end (203) and the second electrode sheet (202); and the first hydraulic cylinder (301) is connected to a hydraulic pump by means of a liquid delivery pipe, a piston of the first hydraulic cylinder (301) is connected to the control switch (302), and the piston drives the control switch (302) to open and close. The instant closing and opening of an electron beam can be realized, thereby greatly improving the production efficiency of irradiation processing, improving the irradiation efficiency, and improving the usage safety of an apparatus.