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.

A charged particle beam treatment system includes a cyclotron that accelerates charged particles so as to emit a charged particle beam, an irradiation nozzle that irradiates a patient with the charged particle beam, a beam transport line along which the charged particle beam B emitted from the cyclotron is transported to the irradiation nozzle, profile monitors and that are provided in the beam transport line and detect a position of the beam, and steering electromagnets that are provided on an upstream side of the profile monitors, and adjust a position of the beam.

[Problem]

A particle therapy system capable of reducing the installation area and also suppressing a variation in the irradiation beam position is provided. A synchrotron generates a charged particle beam, and a beam delivery system irradiates an irradiation target with a charged particle beam extracted from the synchrotron thereby forming a radiation field. A rotating gantry is provided with the beam delivery system and is rotatable around the irradiation target. Dispersion measuring devices, each of which measures the dispersion of the charged particle beam at the position of the irradiation target at a plurality of rotation angles of the rotating gantry, are also provided. The orbit center of the charged particle beam extracted from the synchrotron and the rotation axis of the rotating gantry are located on substantially the same straight line.

A rotary module for a measuring device of an accelerator facility includes a first radial bearing including a first bearing side configured to be paired with an accelerator-side flange connection and further including a second bearing side configured to receive the measuring device on the first radial bearing in a bearing manner such that the measuring device is connected to the accelerator facility by the first radial bearing; and a drive configured to control a rotational movement of the measuring device about an axis of rotation.

A system for measuring displacement of an accelerating tube by using a micro-alignment telescope, which includes a vacuum chamber; a hollow accelerating tube in the vacuum chamber; a sighting target attached to a surface of the accelerating tube while protruding from the surface of the accelerating tube; the micro-alignment telescope spaced apart from one side surface of the vacuum chamber; a first lens device interposed between the micro-alignment telescope and the vacuum chamber; and a second lens device spaced apart from an opposite side surface of the vacuum chamber by a distance, wherein the vacuum chamber includes first and second viewports placed on the surfaces of the vacuum chamber in correspondence with each other, and the micro-alignment telescope, the first lens device, the first viewport, the sighting target, the second viewport and the second lens device are aligned on a same axis in one direction.

The embodiments of the present disclosure relate to a method and system for controlling the extraction of ion beam pulses produced by a synchrocyclotron. The synchrocyclotron comprises electrodes configured to be placed in a magnetic field. An alternating voltage is applied between the electrodes, and the frequency of the alternating voltage is modulated in a cyclic manner. In other embodiments, the method further comprises the steps of starting an acceleration cycle of the synchrocyclotron, generating a reference signal when the modulated frequency reaches a predefined value, communicating the time, at which the reference signal is generated, to the beam control elements, assessing one or more status parameters of the one or more beam control elements, and cancelling or proceeding with the extraction of the beam pulse depending on the results of the assessment.

An object of the present invention is to provide a graphite sheet for a beam sensor, which is excellent in yield when subjected to laser working. The present invention is a graphite sheet for a beam sensor characterized in that the graphite sheet has no eyeball-shaped convex portions on a surface of its a-b plane.

The embodiments of the present disclosure relate to a method and system for controlling the extraction of ion beam pulses produced by a synchrocyclotron. The synchrocyclotron comprises electrodes configured to be placed in a magnetic field. An alternating voltage is applied between the electrodes, and the frequency of the alternating voltage is modulated in a cyclic manner. In other embodiments, the method further comprises the steps of starting an acceleration cycle of the synchrocyclotron, generating a reference signal when the modulated frequency reaches a predefined value, communicating the time, at which the reference signal is generated, to the beam control elements, assessing one or more status parameters of the one or more beam control elements, and cancelling or proceeding with the extraction of the beam pulse depending on the results of the assessment.

A system for measuring displacement of an accelerating tube by using a micro-alignment telescope, which includes a vacuum chamber; a hollow accelerating tube in the vacuum chamber; a sighting target attached to a surface of the accelerating tube while protruding from the surface of the accelerating tube; the micro-alignment telescope spaced apart from one side surface of the vacuum chamber; a first lens device interposed between the micro-alignment telescope and the vacuum chamber; and a second lens device spaced apart from an opposite side surface of the vacuum chamber by a distance, wherein the vacuum chamber includes first and second viewports placed on the surfaces of the vacuum chamber in correspondence with each other, and the micro-alignment telescope, the first lens device, the first viewport, the sighting target, the second viewport and the second lens device are aligned on a same axis in one direction.

A device controller controls an acceleration-related devices and an extraction-related devices of an accelerator for accelerating and extracting a particle beam, in such a way that the controller checks, at a time point when receiving a master clock pulse, that preparation for operating the acceleration-related devices is completed and then commands the acceleration-related devices to operate in accordance with an operation pattern corresponding to a prescribed energy of the particle beam, and commands the acceleration-related devices to operate in accordance with an extracting operation pattern when an extraction enable signal indicating that the particle beam reaches the prescribed energy is turned ON and an extraction-related device setting-status signal indicating that completion of setting the extraction-related devices for the prescribed energy is ON.