The ion source includes a microwave power supply provided outside main magnetic poles, a radiofrequency waveguide and an antenna configured to introduce a microwave generated by the microwave power supply to a region to which a magnetic field generated by the main magnetic poles is applied, and a magnetic field generation unit provided inside a hole provided in a part of the main magnetic poles and configured to generate a magnetic field in a direction opposite to that of the magnetic field generated by the main magnetic poles. Plasma is generated inside the main magnetic poles by a magnetic field generated by applying the magnetic field generated by the magnetic field generation unit in the opposite direction to the main magnetic field decreased according to a diameter of the hole and the microwave introduced by the radiofrequency waveguide and the antenna.

A technique for outputting heterologous ions having the same per-nucleon energy at different timings by using one ion source is provided.

An ion generation device includes: an ion generation energy setter that causes first ions and second ions generated by ionization in a vacuum chamber to be emitted in a mixed state from an opening; an electric-field voltage adjuster that imparts a same predetermined per-nucleon energy to each of the first and second ions by applying electric potential formed between the opening and extraction electrodes while switching the electric potential between first and second electric-field voltages; and an excitation current adjuster that causes the first and second ions to be outputted at different timings by supplying a coil of a separation electromagnet with an excitation current while switching the excitation current between first and second excitation currents.

A technique for outputting heterologous ions having the same per-nucleon energy at different timings by using one ion source is provided.

An ion generation device includes: an ion generation energy setter that causes first ions and second ions generated by ionization in a vacuum chamber to be emitted in a mixed state from an opening; an electric-field voltage adjuster that imparts a same predetermined per-nucleon energy to each of the first and second ions by applying electric potential formed between the opening and extraction electrodes while switching the electric potential between first and second electric-field voltages; and an excitation current adjuster that causes the first and second ions to be outputted at different timings by supplying a coil of a separation electromagnet with an excitation current while switching the excitation current between first and second excitation currents.

A particle accelerator comprises a waveguide configured to accelerate a beam of electrons along an acceleration path. A diversion channel is configured to convey a beam of electrons along a diversion path. A first magnet arrangement is configured to, at a first location, direct electrons from the acceleration path to the diversion path. A second magnet arrangement is configured to, at a second location, direct electrons from the diversion path to the acceleration path.

A particle accelerator comprises a waveguide configured to accelerate a beam of electrons along an acceleration path. A diversion channel is configured to convey a beam of electrons along a diversion path. A first magnet arrangement is configured to, at a first location, direct electrons from the acceleration path to the diversion path. A second magnet arrangement is configured to, at a second location, direct electrons from the diversion path to the acceleration path.

According to one embodiment, a particle beam accelerator comprising: an injection unit configured to inject a particle beam; a guiding unit configured to guide the particle beam to a trajectory; an acceleration unit configured to accelerate the particle beam circulating on the trajectory; an emission unit configured to output the particle beam; a particle beam blocking unit configured to block the particle beam on the trajectory; a control unit configured to control the injection unit, the guiding unit, the acceleration unit, the emission unit, and the particle beam blocking unit, wherein: the guiding unit includes a superconducting electromagnet and a superconducting electromagnet interrupter configured to interrupt the superconducting electromagnet, the control unit is configured to change a starting sequence of the particle beam blocking unit and the superconducting electromagnet interrupter depending on at least an operating state of the emission unit, when an abnormality occurs in the superconducting electromagnet.

According to one embodiment, a particle beam accelerator comprising: an injection unit configured to inject a particle beam; a guiding unit configured to guide the particle beam to a trajectory; an acceleration unit configured to accelerate the particle beam circulating on the trajectory; an emission unit configured to output the particle beam; a particle beam blocking unit configured to block the particle beam on the trajectory; a control unit configured to control the injection unit, the guiding unit, the acceleration unit, the emission unit, and the particle beam blocking unit, wherein: the guiding unit includes a superconducting electromagnet and a superconducting electromagnet interrupter configured to interrupt the superconducting electromagnet, the control unit is configured to change a starting sequence of the particle beam blocking unit and the superconducting electromagnet interrupter depending on at least an operating state of the emission unit, when an abnormality occurs in the superconducting electromagnet.

Current state-of-the art ion sources do not meet multiple application needs for pulsed ion beams because current designs limit obtaining the needed peak currents, anode current densities, total currents, time averaged currents and lifetime in the same structure. High surface energy, power loading, material erosion and stresses damage surfaces. Our concepts for a ‘cold’ anode structure and ion source will reduce these erosion and damage issues. By extending lifetime and performance characteristics multiple applications can be enabled with lower maintenance and cost. The concepts here reduce the surface aging and provide the high performance (peak current, high current density and long lifetime required.

A particle acceleration system includes an ion source that generates an ion, an accelerator that accelerates the ion, And a transporting unit that transports the ion from the ion source to the accelerator, in which an attachment angle and an attachment position of the ion source with respect to the transporting unit are able to be adjusted.

A particle acceleration system includes an ion source that generates an ion, an accelerator that accelerates the ion, And a transporting unit that transports the ion from the ion source to the accelerator, in which an attachment angle and an attachment position of the ion source with respect to the transporting unit are able to be adjusted.