An example particle therapy system includes the following: a gantry that is rotatable relative to a patient position; a particle accelerator mounted to the gantry, where the particle accelerator is for outputting a particle beam essentially directly to the patient position; and a control system to receive a prescription and to generate machine instructions for configuring one or more operational characteristics of the particle therapy system. At least one of the operational characteristics relates to a rotational angle of the gantry relative to the patient position.

An example particle therapy system includes the following: a gantry that is rotatable relative to a patient position; a particle accelerator mounted to the gantry, where the particle accelerator is for outputting a particle beam essentially directly to the patient position; and a control system to receive a prescription and to generate machine instructions for configuring one or more operational characteristics of the particle therapy system. At least one of the operational characteristics relates to a rotational angle of the gantry relative to the patient position.

A system includes a patient support and an outer gantry on which an accelerator is mounted to enable the accelerator to move through a range of positions around a patient on the patient support. The accelerator is configured to produce a proton or ion beam having an energy level sufficient to reach a target in the patient. An inner gantry includes an aperture for directing the proton or ion beam towards the target.

A system includes a patient support and an outer gantry on which an accelerator is mounted to enable the accelerator to move through a range of positions around a patient on the patient support. The accelerator is configured to produce a proton or ion beam having an energy level sufficient to reach a target in the patient. An inner gantry includes an aperture for directing the proton or ion beam towards the target.

An example particle therapy system includes a gantry having a beamline structure configured to direct a particle beam that is monoenergetic from an output of a particle accelerator towards an irradiation target, where the beamline structure includes magnetic bending elements to bend the particle beam along a length of the beamline structure; and an energy degrader downstream of the beamline structure relative to the particle accelerator, where the energy degrader is configured and controllable to change an energy of the particle beam prior to at least part of the particle beam reaching the irradiation target.

An example particle therapy system includes a gantry having a beamline structure configured to direct a particle beam that is monoenergetic from an output of a particle accelerator towards an irradiation target, where the beamline structure includes magnetic bending elements to bend the particle beam along a length of the beamline structure; and an energy degrader downstream of the beamline structure relative to the particle accelerator, where the energy degrader is configured and controllable to change an energy of the particle beam prior to at least part of the particle beam reaching the irradiation target.

A circular accelerator (30) is a device that applies a static magnetic field that circulates a charged particle beam, a radio frequency acceleration electric field that is frequency-modulated and accelerates the charged particle beam, and a radio frequency disturbance electric field that extracts the charged particle beam, in which a circulation frequency of the charged particle beam circulating inside the circular accelerator (30) or kinetic energy of the charged particle beam is obtained after stopping the radio frequency acceleration electric field, and the radio frequency disturbance electric field is generated according to the obtained circulation frequency or kinetic energy. As a result, an accelerator and a particle therapy apparatus capable of improving beam utilization efficiency as compared with the related art are provided.

A circular accelerator (30) is a device that applies a static magnetic field that circulates a charged particle beam, a radio frequency acceleration electric field that is frequency-modulated and accelerates the charged particle beam, and a radio frequency disturbance electric field that extracts the charged particle beam, in which a circulation frequency of the charged particle beam circulating inside the circular accelerator (30) or kinetic energy of the charged particle beam is obtained after stopping the radio frequency acceleration electric field, and the radio frequency disturbance electric field is generated according to the obtained circulation frequency or kinetic energy. As a result, an accelerator and a particle therapy apparatus capable of improving beam utilization efficiency as compared with the related art are provided.

A cooling device for cooling an object contained in a vacuum chamber. The cooling device is insertable into and removable out of a boot housed by the vacuum chamber. The boot is in thermal contact with the object. A distal portion of the cooling device comprises a cold station and a coupler thermally connected to the cold station. The coupler comprises at least two mobile contacts thermally connected to the first cold station. The cooling device also comprises a driving means and a mechanical transmission connecting the driving means to the at least two mobile contacts. The driving means and the mechanical transmission are configured to move the at least two mobile contacts radially inwardly and outwardly to respectively loosen or make a conductive thermal contact between the cold station and the boot.

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.