A particle beam treatment apparatus includes an irradiation portion configured to irradiate a particle beam to an irradiation target, a transport portion configured to transport the particle beam, and a deflection magnet apparatus having a deflection magnet for deflecting the particle beam in the transport portion. The deflection magnet is rotatable around a beam axis of the particle beam. A deflection magnet apparatus includes a deflection magnet that deflects a particle beam. The deflection magnet is rotatable around a beam axis of the particle beam. A particle beam adjustment method for adjusting a deflection magnet that deflects a particle beam includes adjusting the particle beam by rotating the deflection magnet around a beam axis of the particle beam.

A rotating capacitor is used in a circular accelerator that accelerates a charged particle beam by feeding a first radio frequency to a DC main magnetic field. The rotating capacitor modulates a frequency of the first radio frequency. The rotating capacitor includes a stator electrode and a rotor electrode used for modulating the frequency of the first radio frequency together with the stator electrode. A vacuum seal performs vacuum sealing around a shaft for rotating the rotor electrode. A bearing that supports the shaft is installed on an atmosphere side.

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 radiotherapy system includes a particle accelerator configured to receive charged particles from a pulsed source. The particle accelerator includes a pipe configured to allow the charged particles to pass through as a beam, a magnetic core positioned proximate to the pipe and coupled to the pulsed source, and at least one multilayer insulator positioned adjacent to the pipe and the magnetic core. The system also includes a photoconductive switch coupled to the particle accelerator and configured to supply the particle accelerator with a plurality of voltage pulses.

A neutron ray generating apparatus includes: an accelerator that emits a particle beam; a target disposition portion that disposes a target that is irradiated with the particle beam to generate a neutron ray; and a transport path that transports the particle beam between the accelerator and the target disposition portion. The target disposition portion and the accelerator are disposed on a reference line of the transport path. A first shield member that shields radiation and a second shield member that shields the radiation and that is disposed to be spaced apart from the first shield member toward an accelerator side are provided between the target disposition portion and the accelerator.

A particle beam guiding system (1a, 1b, 1c) for receiving an incoming particle beam (6a, 6b, 6c) along an incoming trajectory (T1) and controlling an exit energy level and an exit trajectory (T3) of the particle beam, wherein the particle beam guiding system comprises an attenuator (22) for adjusting the energy level of the particle beam; a first beam guide (26) positioned downstream of the attenuator, comprising first and second guiding dipoles, each comprising two magnets for creating magnetic fields for deflecting the particle beam from the incoming trajectory into an intermediate trajectory (T2), wherein the first dipole of the first beam guide is arranged to deflect the particle beam in a first plane, and the second dipole of the first beam guide is arranged to deflect the particle beam in a second plane which is orthogonal to the first plane; and a second beam guide (28) positioned downstream of the first beam guide, comprising first and second guiding dipoles, each comprising two magnets for creating magnetic fields for deflecting the particle beam from the intermediate trajectory into the exit trajectory, wherein the first dipole of the second beam guide is arranged to deflect the particle beam in a first plane and the second dipole of the second beam guide is arranged to deflect the particle beam in a second plane which is orthogonal to the first plane. A radiotherapy system comprising such particle beam guiding systems is also disclosed.

A neutron beam source generation system, a neutron beam source stabilization control system, and a neutron beam source generation method are provided. The neutron beam source generation system includes an accelerator, a target, and a calibration module. The accelerator is configured to generate a proton beam. A neutron beam source is generated by irradiating the target with the proton beam. The calibration module includes a pair of electromagnet components, a profile-measuring component, a current-measuring component, and a Faraday cup component. The calibration module uses the pair of electromagnet components to control the distribution of the proton beam according to the profile distribution of the proton beam as measured by the profile-measuring component. The calibration module adjusts the current of the proton beam according to the first current value as measured by the current-measuring component, the second current value as measured by the Faraday cup component, or both.

Proton therapy treatment system to be deployed in an existing radiotherapy treatment vault such that radiation exposure is limited and meets radiation safety requirements. Patient support platform disposed in vault is configured for supporting patient, such as in a seated position. Imager is configured for imaging patient on patient support platform. A proton beam generator comprising a synchrotron is disposed in a region of vault. A proton beam delivery device is configured to deliver proton irradiation dose to isocenter of target tissue during treatment session, where delivery device may be gantry-less pencil beam scanning device operating without a collimator. Synchrotron may be disposed adjacent to entrance wall of vault and proton irradiation dose directed toward rear wall of vault. Synchrotron may extend through apertures of rear intermediate wall of vault and proton irradiation dose directed toward entrance intermediate wall of vault.

A particle therapy apparatus configured to scan a charged particle beam over a target according to a pre-defined treatment field which covers a treatment surface in an isocenter plane of the apparatus. The apparatus is capable of scanning the beam over a reachable surface which covers and is larger than the treatment surface. A beam stopper is arranged downstream of the scanning magnets of the apparatus, at a position to prevent the beam from reaching at least a portion of the reachable surface and to allow the beam to reach any portion of the treatment surface. A control system is configured to control the apparatus to direct the beam to the beam stopper and to meanwhile measure a position of the beam, to calculate a difference between a desired position and the measured position of the beam when directed to the beam stopper, and to scan the beam over the target according to the pre-defined treatment field by taking into account the calculated difference.

A target current monitoring device for a boron neutron capture therapy system includes a beam current shaping body and a replaceable target part disposed inside a proton channel of the beam current shaping body, and further includes an automatic conduction detection device independent of the target part, where the automatic conduction detection device includes a contact part and an external current monitoring apparatus electrically connected with the contact part, the contact part is disposed on a moving path of the target part, and the contact part forms a circuit with the external current monitoring apparatus after being in contact with the target part. Since the automatic conduction detection device and target assembly are independently disposed and no hard-wired connection of electric wires exists, the current of the target can be read in real time under full automation, and the automatic replacement, movement and storage of the target can be achieved.

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.