Abstract: Systems, devices, and methods for collimating a neutron beam to specified deliverable formats having targeted beam diameters and direction are described. Examples of a neutron collimator assembly can include numerous components based on location, function, dimension, and/or constituent material. The components can include, neutron beam collimators, a beam stop, a mounting assembly, electro-mechanical actuators, an electronic controller, a safety interlock system, a moveable radiation shield, a safety cover, and an adjustable patient platform. In addition, examples of variable aperture neutron beam collimators such as nested neutron beam collimators and collimators with a diaphragm iris are described. Materials are also described.

Abstract: A method for monitoring and controlling neutron beams includes performing a calibration process for a monitoring dosimeter at a first set of conditions for directing a neutron beam towards an object location, the neutron beam being emitted from a neutron-generating target in response to an incident charged particle beam, the process comprising: obtaining data indicating a first neutron flux measured by the monitoring dosimeter between the monitoring dosimeter and the object location, the monitoring dosimeter offset from the axis by a distance equal to or greater than the beam radius; obtaining data indicating a second neutron flux measured by a reference dosimeter between the target and the object location; storing calibration data including a correlation between the first neutron flux and the second neutron flux; and based on the calibration data, using the monitoring dosimeter to monitor neutron flux incident on a patient during boron neutron capture therapy treatment.

Abstract: Embodiments of systems, devices, and methods relate to exclusion of ion beam paths on the target surface to optimize neutron beam performance. A particle beam is directed along an axis so that the particle beam is incident on a target positioned on the particle beam axis. The target has a scannable surface extending over an area substantially orthogonal to the axis. The particle beam is scanned across the scannable surface of the target along a first path having a first flux. The particle beam, having a second flux, is scanned across the scannable surface of the target along a second path that is within an exclusion area of the target.

Abstract: Embodiments of systems, devices, and methods relate to controlling beams for use in beam systems. An example method of controlling a travel path of a beam includes propagating a beam along a first path from an entry point of a dipole magnet through a non-gradient portion of the dipole magnet until the beam bends toward a first beam travel path of multiple beam travel paths of the dipole magnet. The example method further includes propagating the beam along the first beam travel path through a gradient portion of the dipole magnet to focus the beam for propagation to a downstream target. Embodiments further permit a compact beam system such that a series of magnets can be used to create a path that accommodates shielding to minimize the footprint of the beam system for facilities that may not otherwise support large systems due to space and safety constraints.

Abstract: Systems, devices, and methods for converting a raw neutron beam to a specified deliverable format having a targeted energy range, size, and direction are described. Embodiments of a neutron beam converter can include numerous regions based on location, function, dimension, and/or constituent material. The regions can include a central region, an intermediate region, a peripheral region, and a frontal region. Materials are also described.

Abstract: 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.