An apparatus for generating neutrons may include: a hollow casing configured to rotate about a central axis, the casing including a wall having a central region substantially at the central axis and a peripheral region, wherein the wall defines a cavity, and wherein the cavity is configured to contain a first coolant fluid; an active layer at least partially on the peripheral region external to the cavity, wherein the active layer is configured to realize a neutron-generating reaction; at least one particle accelerator configured to direct an ion beam on the active layer to activate the neutron-generating reaction; movement means configured to rotate the casing about the central axis and to force the first coolant fluid to contact the wall at the active layer for cooling the casing; and external cooling including a second coolant fluid contacting at least an external portion of the wall.

The present disclosure provides a neutron capture therapy system, including a neutron generator to generate neutrons after irradiation by charged particles, and a beam shaping assembly includes a moderator and a reflector surrounding the moderator. A vacuum tube connected to the accelerator is provided at an accommodating portion. The vacuum tube transmits the charged particles accelerated by the accelerator to the neutron generator to generate neutrons. The neutron generator moves between a first position and a second position, at the first position, the neutron generator react with the charged particle beam to generate neutrons, at the second position, the neutron generator falls off the beam shaping assembly. The vacuum tube is detached to make the neutron generator fall off the beam shaping assembly, to reduce direct contact of a worker with the neutron generator after nuclear reactions, thereby reducing radioactive hazards for workers.

A neutron generator with an ion source within a housing may be used for generating neutrons for neutron logging downhole in a wellbore. The ion source within the housing of the neutron generator may include a hot cathode, an ion source cylinder, a first grid separated from the ion source cylinder, and an extractor separated from the ion source cylinder, the extractor having a second grid.

Neutron generation targets and methods for manufacturing neutron generation targets, e.g., for using in boron neutron capture therapy. One method includes pressing lithium foil to substrate with enough force, such that lithium deforms during the pressing operation and adheres to the substrate, thereby forming a thin lithium layer on the surface of the substrate.

Neutron generation targets and methods for manufacturing neutron generation targets, e.g., for using in boron neutron capture therapy. One method includes pressing lithium foil to substrate with enough force, such that lithium deforms during the pressing operation and adheres to the substrate, thereby forming a thin lithium layer on the surface of the substrate.

A neutron capture therapy system is provided, including a neutron generating device and a beam shaping assembly. The neutron capture therapy system further includes a concrete wall forming a space for accommodating the neutron generating device and the beam shaping assembly and shielding radiations generated by the neutron generating device and the beam shaping assembly. A support module is disposed in the concrete wall, the support module is capable of supporting the beam shaping assembly and is used to adjust the position of the beam shaping assembly, and the support module includes concrete and a reinforcing portion at least partially disposed in the concrete. The neutron capture therapy system designs a locally adjustable support for the beam shaping assembly, so that the beam shaping assembly can meet the precision requirement, improve the beam quality, and meet an assembly tolerance of the target.

A neutron capture therapy system is provided, including a neutron generating device and a beam shaping assembly. The neutron capture therapy system further includes a concrete wall forming a space for accommodating the neutron generating device and the beam shaping assembly and shielding radiations generated by the neutron generating device and the beam shaping assembly. A support module is disposed in the concrete wall, the support module is capable of supporting the beam shaping assembly and is used to adjust the position of the beam shaping assembly, and the support module includes concrete and a reinforcing portion at least partially disposed in the concrete. The neutron capture therapy system designs a locally adjustable support for the beam shaping assembly, so that the beam shaping assembly can meet the precision requirement, improve the beam quality, and meet an assembly tolerance of the target.

According to one aspect, the present description concerns a target (20) for the production of nuclear particles. The target comprises a shell (24) formed by a surface of revolution and mounted in rotation about an axis of rotation (21) that coincides with an axis of revolution of the shell. The target further comprises a reservoir comprising a target material in the liquid state during use, the target material being suitable for producing the nuclear particles; a target material raising device configured to entrain, in operation, the target material from the reservoir toward an upper surface (244) of the shell; a gutter formed along an external perimeter (245) of the shell and configured to receive, in operation, droplets derived from a film (22) of target material induced by centrifugal action on said upper surface of the shell as the shell is rotated; at least one return pipe forming a fluid connection between the gutter and the container; an inlet pipe configured, in operation, to let in a beam of accelerated particles into a zone of impingement of said accelerated particles with the shell, said zone of impingement being situated on said upper surface of the shell, the interaction of said accelerated particles with the target material circulating on said upper surface of the shell generating said nuclear particles

A neutron capture therapy system includes an accelerator for generating a charged particle beam, a neutron generator for generating a neutron beam having neutrons after irradiation by the charged particle beam, and a beam shaping assembly for shaping the neutron beam. The beam shaping assembly includes a moderator and a reflecting assembly surrounding the moderator. The neutron generator generates the neutrons after irradiation by the charged particle beam. The moderator moderates the neutrons generated by the neutron generator to a preset energy spectrum. The reflecting assembly includes a plurality of reflectors configured to guide deflected neutrons back to the neutron beam and a supporting member to support the plurality of reflectors. A lead-antimony alloy is for the reflecting assembly to mitigate a creep effect that occurs when only a lead material is for the plurality of reflectors, thereby improving the structural strength of a beam shaping assembly.

A neutron capture therapy system includes an accelerator for generating a charged particle beam, a neutron generator for generating a neutron beam having neutrons after irradiation by the charged particle beam, and a beam shaping assembly for shaping the neutron beam. The beam shaping assembly includes a moderator and a reflecting assembly surrounding the moderator. The neutron generator generates the neutrons after irradiation by the charged particle beam. The moderator moderates the neutrons generated by the neutron generator to a preset energy spectrum. The reflecting assembly includes a plurality of reflectors configured to guide deflected neutrons back to the neutron beam and a supporting member to support the plurality of reflectors. A lead-antimony alloy is for the reflecting assembly to mitigate a creep effect that occurs when only a lead material is for the plurality of reflectors, thereby improving the structural strength of a beam shaping assembly.