A reusable joint for a medical linac, a reusable CF choke flange for a medical linac, a linac and a method for forming a reusable joint for a medical linac are disclosed. The reusable joint comprises a CF choke flange, a CF cover flange and a gasket. The CF choke flange comprises a first waveguide aperture, a choke groove and a first CF groove comprising a first knife-edge, wherein the choke groove is disposed radially inwards from the first CF groove on the CF choke flange. The CF cover flange comprises a second waveguide aperture aligned with the first waveguide aperture and a second CF groove comprising a second knife-edge and aligned with the first CF groove. The gasket is disposed between and in contact with the first CF groove and the second CF groove.

The present relates to a device for providing a radiation treatment to a patient comprising:—an electron source for providing a beam of electrons, and—a linear accelerator for accelerating said beam until a predetermined energy, and—a beam delivery module for delivering the accelerated beam from said linear accelerator toward the patient to treat a target volume with a radiation dose, The device further comprises intensity modulation means configured to modulate the distribution of the radiation dose in the target volume according to a predetermined pattern. The pattern is determined to match the dimensions of a target volume of at least about 50 cm.sup.3, and/or a target volume located at least about 5 cm deep in the tissue of the patient with said radiation dose, The radiation dose distributed is up to about 20 Gy delivered during an overall treatment time less than about 50 ms.

Methods, devices and systems for ultra-high dose radiotherapy are disclosed. The described techniques rely in-part on active switching control of a photoconductive switch during the time the accelerator is accelerating charged particles to produce the output radiation at the desired dose rates. One flash radiotherapy system includes an induction accelerator, and a controllable switch coupled to the induction accelerator. The switch is operable to produce a plurality of voltage pulses to drive the induction accelerator. The radiotherapy system also includes a radiation measurement device to measure output radiation produced by the radiotherapy system and provide feedback to the controllable switch. The controllable switch is operable to, based on the received feedback, modify an amplitude, shape, spacing, number or width of the voltage pulses that are supplied to the particle accelerator to deliver the desired output radiation.

A radiation treatment session is initiated to deliver a therapeutic radiation beam from a therapeutic radiation source to a target. One or more X-ray radiation sources are caused to deliver an imaging radiation beam from the one or more X-ray radiation sources through the target to one or more X-ray detectors to acquire imaging data associated with the target during therapeutic radiation beam delivery. One or more volumetric images are constructed using the acquired imaging data.

A heat dissipation structure includes a housing. The housing has a bottom surface, a liquid inlet channel, a liquid outlet channel and a protruding portion. The liquid inlet channel and the liquid outlet channel are located at two opposite ends of the housing and above the bottom surface. The liquid inlet channel and the liquid outlet channel extend along a first direction. The protruding portion is located between the liquid inlet channel and the liquid outlet channel and above the bottom surface. The protruding portion protrudes towards a direction away from the bottom surface. The protruding portion has a protruding surface facing away from the bottom surface. A distance between the protruding surface and the bottom surface is increased first and then decreased along the first direction.

Disclosed herein is a high-power device for supplying a radiofrequency electromagnetic field to a waveguide. The device comprises a magnetron configured to supply a radiofrequency electromagnetic field to a waveguide and a control unit configured to control the magnetron to output radiofrequency energy to the waveguide. The magnetron comprises a high voltage pulse connection enclosed in an enclosure, a heater connection configured to allow an electrical connection to penetrate the enclosure and a mechanism configured to transmit data between the magnetron and the control unit.

A neutron beam generating device includes a supporting base, an outer shell, a target material, and a first pipe. The outer shell surrounds a rotating axis, rotatable engages the supporting base, and has a first opening. The target material is disposed in the outer shell. The first pipe extends from the first opening of the outer shell along the rotating axis to the target material. The first pipe is configured to transmit an ion beam to bombard the target material to generate a neutron beam.

A method for generating a minibeam, including focusing the incident beam through a first quadrupole along a first direction and through a second quadrupole along a second direction orthogonal to the first direction, deflecting the incident beam, through a third magnet along a third direction and through a fourth magnet according to a distinct fourth direction, adjusting a magnetic field gradient generated by first quadrupole and/or respectively by the second quadrupole so that a focal length of the first quadrupole is superior or equal to 60 and/or is less than or equal to 250 cm and/or respectively a focal length of the second quadrupole is superior or equal to 50 and/or is less than or equal to 200 cm for the focused beam to meet the criteria of a minibeam along a volume extending between a focal point of the first quadrupole and a focal point of the second quadrupole.

The present disclosures relates to an ion beam assembly where a relatively small deflection angle (approximately 15° from the center of the beam line) is used in conjunction with two beam dumps located on either side of the beam. In some embodiments, the combination of the two beam dumps and the magnet assembly can provide an ion beam filter. In some embodiments, the resulting system provides a smaller, safer and more reliable ion beam. In some embodiments, the ion beam can be a proton beam.

A neutron capture therapy system includes a neutron beam generating unit, an irradiation room configured to irradiate an irradiated body with a neutron beam, a preparation room configured to implement preparation work required to irradiate the irradiated body with the neutron beam, and an auxiliary positioner disposed in the irradiation room and/or the preparation room. The irradiation room includes a first shielding wall, a collimator is disposed on the first shielding wall for emitting the neutron beam, and the neutron beam is emitted from the collimator and defines a neutron beam axis. The auxiliary positioner includes a laser emitter that emits a laser beam to position the irradiated body, wherein the position of the laser emitter is selectable. Therefore, the irradiated body can be positioned in any case to implement precise irradiation.